Canon Lens Review News at The-Digital-Picture.com

Image Quality Results from Second Canon 200-400mm f/4 L IS 1.4x Lens

Wed, 12 Jun 2013 10:32:27 CDT

Image quality results from a second Canon EF 200-400mm f/4 L IS USM Ext 1.4x Lens are now available on the site.

The second lens' results are displayed as sample "3" and "4". Read the Is This the World's Sharpest DSLR Zoom Lens? post to learn the details of this lens' image quality presentation.

Is This the World's Sharpest DSLR Zoom Lens?

Mon, 10 Jun 2013 01:00:00 CDT

You can cross bad image quality off of your list of potential reasons to not get the new Canon EF 200-400mm f/4 L IS USM Ext 1.4x Lens. Because this lens totally rocks in that regard. Image quality results from the 200-400mm f/4 L IS Lens are now available on the site. These are among the best results I've ever seen from a zoom lens - or from any lens.

I'll let you decide if the 200-400 L bests the previous zoom lens image quality title holder, the Canon EF 70-200mm f/2.8 L IS II USM Lens. Here is the 200mm comparison (use the mouseover or toggle buttons feature). Note that you are going to see some distortion differences in these results as the 70-200 is at its longest focal length and the 200-400 is set to its widest focal length. Also note that the 70-200 has a 1-stop wider aperture in this comparison. I'll let you decide if they would be more-fairly compared at equivalent (f/4) apertures (you can change the comparison tool settings if you vote this way).

There are some things you need to know about the Canon EF 200-400mm f/4 L IS USM Ext 1.4x Lens image quality test results. The built-in extender with external extender compatibility complicates complete image quality presentation of this lens in our tool. So, here is what we are showing.

The first tested copy of this lens (we have two right now) is presented as two lens samples – sample "1" and "2". Sample "1" is tested at all focal lengths (including those with extenders) with the built-in extender switch set to 1.0x (not being used) with the only exception being the first of the two 560mm focal length tests – the one that indicates "1.4x Extender Int". Sample "2" results were all captured with the built-in extender in place – the switch was set to 1.4x with no exceptions. Sample "2" results showing one of the "III" extenders in use also had the built-in 1.4x in use. You will notice the ultra-high focal lengths in these results.

Here are some interesting comparisons that can be made:

Compare the image quality of the 200-400mm L lens at various focal lengths with and without the built-in extender in place by comparing lens sample "1" to lens sample "2". The with-extender image quality is really good, but there is a modest image quality penalty for using the extender. This is not unexpected from adding 8/4 elements/groups to the light path. Stop down 1 stop to eliminate most of that penalty.

Compare the image quality of the 200-400mm L lens' built in 1.4x extender to the external Canon 1.4x III Extender. The first difference I notice is that the internal extender appears to add pincushion distortion while the external extender adds a touch of barrel distortion. This difference is what would account for the difference in test chart detail sizes. Otherwise, I don't think you will see a difference in image quality between these two extenders used on this lens.

While extended focal lengths up to 1120mm are supported with Canon's blessings, I doubt that many will want to go to this extreme.

Spring 2013 Canon Big White L Lens Family Picture

Fri, 07 Jun 2013 00:31:15 CDT

With the new arrival now home, the Canon Big White L Lenses just had to have their spring 2013 family picture created (download larger images below).

Featured in these pictures, from left to right, are the following lenses:

Canon EF 200mm f/2 L IS USM Lens
Canon EF 300mm f/2.8 L IS II USM Lens
Canon EF 400mm f/2.8 L IS II USM Lens
Canon EF 200-400mm f/4 L IS USM Ext 1.4x Lens
Canon EF 500mm f/4.0 L IS II USM Lens
Canon EF 600mm f/4.0 L IS II USM Lens
Canon EF 800mm f/5.6 L IS USM Lens

Download Larger Images

Download larger images for your wallpaper, physical wall – or just to get a closer look (grab a tissue to catch the drool):

No Hood | Hood

Updated: Canon EF 200-400mm f/4 L IS USM Extender 1.4x Lens Preview

Wed, 15 May 2013 11:37:08 CDT

The Canon EF 200-400mm f/4 L IS USM Extender 1.4x Lens Review page has been updated to incorporate the newly-available information about this lens.

Links to the USA and UK press releases, the development announcements and also to some early user reports are provided.

I am very optimistic about the image quality that this lens is going to deliver and excited about what this lens will do for me.

Canon Rebel T4i and EF-S 18-135mm IS STM Lens Sample Pictures

Thu, 02 May 2013 08:52:38 CDT

Sample pictures have been added to the Canon EOS Rebel T4i / 600D and Canon EF-S 18-135mm IS STM Lens reviews.

I know, those reviews were completed long ago. It's just that I finally was able to take the time necessary to get the photos onto the site. Both sets of pictures are the same - just view one of the galleries.

Refreshed Canon EF 85mm f/1.2 L II Lens Sample Pictures

Fri, 12 Apr 2013 10:44:23 CDT

Since we were discussing the Canon EF 85mm f/1.2 L II USM Lens yesterday, I thought I would put up some fresh sample pictures for that lens. Hopefully you will find them - or one of the included tips - interesting and helpful.

Can the Canon EF 85mm f/1.2 L II Lens be used for Sports Action Photography?

Thu, 11 Apr 2013 09:32:03 CDT

I included the Canon EF 85mm f/1.2 L II Lens in my indoor action sports lens recommendation list. Some, in a politely-constructive way (always very appreciated), are questioning my logic for doing so. The big reason for this questioning is due to the 85mm f/1.2 L II's focusing speed. This is not the fastest Canon AF system.

So the question: "Can the EF 85mm f/1.2 L II Lens be used for sports action photography?" is one that I want to answer today.

The short answer is "Yes".

Here is a very slightly cropped sample photo I captured with a Canon 1D X:

Is it sharp? That is a good question because it is easy to make web-sized images sharp. Even with very light sharpening ("2" in DPP), the eyelashes are sharp as shown in the screen capture below. The screen capture is lower quality than DPP's RAW conversion (the sharpening is not as clean), but I want to show the active AF point placed on the jaw line:

Close and fast approaching subjects present a challenge to the autofocus systems of both cameras and lenses. This runner was very close and moving fast. She was on the inside lane of the track and I was off of the track *just* far enough to not disturb the race. It is going to be hard to get much closer to any action - and dangerous to get that close to anything faster. The 1D X has proven very impressive to me, making it a great choice for finding the limitations of the lens. This shot and a significant percentage of my other 85 f/1.2 action images are in sharp focus.

Adding to the challenge of capturing in-focus action sports images with this lens is the razor-thin depth of field at f/1.2. Maintaining a focus point on the same plane of focus as the in-action subject's eyes is a challenge. Do not expect an in-focus hit rate as high as with some good f/2.8 lenses - though the 85 f/1.2 L II bested some other non-Canon f/2.8 lenses I was testing at the same event.

You of course do not have to use a wide open aperture, but ... f/1.2 is a leading contributor to the major awesomeness of this lens. It is seldom too dark to stop action with an f/1.2 aperture as the in-action subject's ability to see becomes an issue.

Actually, it can be too bright to shoot sports at f/1.2 unless you have the right DSLR camera. Shooting under full sunlight as shown in the sample above? You need a DSLR with 1/8000 shutter speed capability (only higher end models have it) along with ISO 50 to keep images dark enough to avoid blown highlights in some scenarios. These were the settings used in the sample above. Alternatively, a neutral density filter can be used.

Returning to the autofocus speed question ... Can other Canon lenses focus faster than the 85 f/1.2 L II? Yes. But, this 85mm f/1.2 action sports sample is far from a 1-off autofocus accident. My overall focus hit rate is decent with this lens.

Can any other Canon lens produce the same sports image look?

No. I love this lens.

Canon EOS 60D ISO 12233 Chart Results

Thu, 28 Mar 2013 08:25:20 CDT

Canon EOS 60D ISO 12233 resolution chart test results for most current Canon lenses are now included in the site's camera lens image quality comparison tool.

As you can imagine, this was a big project for us. The 60D will become the standard EF-S Lens test camera and we will continue to test EF Lenses with the 60D as time permits.

Though the 60D results are useful in same-camera comparisons, you will find that results from this camera are not as sharp as results from the 1Ds III and other impressive Canon full frame cameras - even though identical test and processing settings (with a very low sharpness setting) were used. The T4i would deliver sharper results at the same processing settings (comparison), but the T4i has increased high ISO noise visibility as a result. There is a trade-off. The 60D results can also be given a higher sharpness setting. You are welcome to load 60D results into your favorite image processing application to see how increasing sharpness changes the results for the lens you are interested in.

Interesting spec: There are now 25,344 crops from 8,448 ISO 12233 test images available for review on the site.

Just Posted: Canon EF 24-70mm f/4 L IS USM Lens Review

Thu, 14 Feb 2013 10:16:46 CDT

The full review of the Canon EF 24-70mm f/4 L IS USM Lens has just been posted.

Check out the macro capabilities featured in what could perhaps be Canon's first EF zoom lens worthy of a "Macro" designator in its name. Then share the review with your friends. Thanks!

82mm Circular Polarizer Filter Vignetting Results Added

Thu, 07 Feb 2013 09:49:43 CDT

With a standard thickness B+W 82mm Circular Polarizer filter recently added to our lab inventory, we now have 82mm Circular Polarizer filter vignetting results included in the following reviews:

Canon EF 16-35mm f/2.8 L II USM Lens (compare)
Canon EF 24-70mm f/2.8 L II USM Lens (compare)
Tamron 24-70mm f/2.8 Di VC USD Lens (compare)
Tokina 17-35mm f/4 AT-X Pro FX Lens (compare)
Coming soon: Sigma 24-70mm f/2.8 EX DG HSM Lens

Because of the thickness of standard circular polarizer filters, mechanical vignetting is sometimes an issue when they are used on wide angle lenses. These tests allow comparison between the bare lens and the with-CP filter results (typically the last option in the focal length drop-down box).

In the above examples, the two Canon lenses show some additional vignetting when used with the standard thickness CP filters. While a slim circular polarizer filter is a great option, I much-prefer B+W's flagship B+W's XS-Pro Circular Polarizer Filters (B&H) (Adorama). These top-of-the-line filters are slim, but include front threads that will hold a standard lens cap in place.

Canon 35mm f/2 IS Lens Compared to the Sigma 35mm f/1.4 Lens

Wed, 30 Jan 2013 11:23:26 CDT

Comparing the Canon EF 35mm f/2 IS USM Lens with the Sigma 35mm f/1.4 DG HSM Lens - which to choose:

If you need the f/1.4 aperture, for the shallow depth of field or for the faster shutter speeds it makes available (key to stopping action in low light), your decision is made. You need the Sigma 35 f/1.4.

If you need Image Stabilization, the Canon 35 f/2 IS is of course the right choice.

If f/2 is wide enough for you and you don't need IS, the decision becomes a bit more complicated. Here are some comparisons to help with that decision process.

The Sigma of course rules all comparisons at f/1.4 - and turns in remarkable performance at f/1.4 compared to other f/1.4 lenses.

The Canon joins the comparison at f/2. At f/2, you can expect the Sigma to be noticeably sharper in the center of the image and the Canon to have a slight sharpness edge closer to the corners - where the Canon shows more vignetting. The sharpness comparison at f/2.8 has these lenses performing more similarly in the center (both excellent). The Sigma retains a slight center advantage and the Canon holds the peripheral edge. Beyond f/2.8, both lenses are razor sharp with the Canon retaining slightly better full frame corner sharpness.

The Sigma has about 1/2 as much vignetting at comparable apertures until stopped down to about f/4 where the Canon trails the Sigma by a very small amount through f/16. The Sigma has slightly less flare until the aperture narrows to f/8. The Canon then has noticeably less flare through f/16. Neither lens has significant distortion. These two lenses deliver similar (good) bokeh at comparable apertures.

The Canon weighs 1/2 as much, is smaller and focuses closer with a higher MM (0.24x vs. 0.19x). The Canon is modestly less expensive at this time.

Here are the full reviews for these lenses:

Sigma 35mm f/1.4 DG HSM Lens Review
Canon EF 35mm f/2 IS USM Lens Review

Canon EF 24-70mm f/4 L IS USM Lens Flare Results

Fri, 25 Jan 2013 08:47:41 CDT

Clear skies have been in very short supply for us lately, but I was able to squeeze in a flare test recently. Flare test results are now included on the Canon EF 24-70mm f/4 L IS USM Lens Review page.

As with the other similar zoom lenses, you will want to keep very bright lights out of the frame when shooting with the Canon 24-70 f/4 L IS Lens.

Using Extenders with the Canon EF 28-300mm f/3.5-5.6 L IS USM Lens

Fri, 18 Jan 2013 09:05:10 CDT

ISO 12233 resolution chart results for extenders have been added to the Canon EF 28-300mm f/3.5-5.6 L IS USM Lens Review.

According to Canon, the EF 28-300mm f/3.5-5.6 L IS USM Lens is not compatible with extenders. Not fully compatible is correct, but ... extenders can indeed be used with this lens as proven by the 420mm and 600mm ISO 12233 chart results in this review.

If the 28-300 L is zoomed out to 50mm or longer, the rear element retracts into the lens far enough for the Canon 1.4x and 2x extenders to physically mount onto the lens. Once installed, zooming in to 50mm will result in physical contact between the front of the extender (likely the rubber ring surrounding the glass lens element) and the rear element of the lens. You obviously want to avoid this.

You will also likely want to avoid the image quality that the Canon EF 2x III Extender combo delivers at 600mm. The results are not pretty. At 600mm, this is an f/11 max aperture lens that will not AF even on a 1-Series body (tried it - AF didn't work). Better, but still not impressive are the results with the Canon EF 1.4x III Extender at 420mm where this is an f/8 max aperture lens. Autofocusing with the 1.4x attached is very, very slow and very frequently fails completely on the EOS 1Ds III being used for testing.

The extender and lens combo's focal length reported properly in EXIF, but the aperture did not.

Canon EF 35mm f/2 IS USM Lens Review Posted

Tue, 15 Jan 2013 09:36:03 CDT

Just posted: Canon EF 35mm f/2 IS USM Lens Review

First Looks at Canon EF 24-70mm f/4 L IS USM Lens Image Quality

Mon, 14 Jan 2013 08:56:15 CDT

ISO 12233 resolution chart, distortion and vignetting test results, along with specs and measurements, have been added to the Canon EF 24-70mm f/4 L IS USM Lens Review page.

Here are some of my initial comparative thoughts based on multiple copies tested:

You will see very low distortion from the 24-70 f/4 L IS relative to similar zoom lenses. Noticeably less than from the 24-105 f/4 L IS - significantly less at 24mm. Landscape photographers shooting over a flat horizon (such as water) will especially appreciate the difference at 24mm, though the 24-70 f/4 L IS still has some barrel distortion.

The 24-70 f/4 L IS is nearly void of CA (Chromatic Aberration) until the longer end of the focal length range where mild CA becomes apparent at 70mm. The 24-70 f/4 L IS has noticeably less CA than the 24-105 f/4 L IS at the wide end, but more at 70mm.

The 24-70 f/4 L IS is similar to the 24-70 f/2.8 L II in regards to both CA and distortion.

The 24-70 f/4 L IS has less vignetting than the 24-105 f/4 L IS at the wide end at f/4, but more at the long end. By f/5.6, the two lenses are close in this regard. The 24-70 f/2.8 L II, with its 1-stop wider aperture, has the comparable-aperture vignetting advantage until about f/8 where the two are nearly equal.

If you are shooting at f/11, the 24-70 f/4 L IS, 24-105 f/4 L IS and 24-70 f/2.8 L II lenses produce essentially equal sharpness. The 24-105 has the longest focal length range to its advantage in this comparison. The 24-70 f/2.8 L II lacks IS.

At 24mm with a wide open aperture, the 24-70 f/4 L IS bests the 24-105 L IS in sharpness by a modest amount. The 24-70 f/4 L IS gets softer (especially in the mid and peripheral image circle) by 50mm f/4 where the lens performs its worst.

That this lens performs its worst at a mid-focal length vs. an extremity focal length is unusual. Since most people shoot their highest percentage of images at the focal length range extremes of a lens, the 24-70 L IS weakness is perhaps well placed. Roger at LensRentals.com has confirmed the 50mm weakness in his vast stock of this lens.

The 24-105 L delivers a sharper image at 50mm f/4. Sharpness improvement at 70mm brings the 24-70 f/4 L IS back up to near equality with the 24-105 L. These two lenses perform more similarly at f/5.6 and at f/8, results from these two lenses are nearly comparable. Again, the results are similar at f/11.

The Canon EF 24-70mm f/2.8 L II USM Lens is the sharper lens of this group - even at f/2.8 vs. f/4.

Overall, the Canon EF 24-70mm f/4 L IS USM Lens appears to be a great lens, but ... perhaps overpriced with the bargain-priced Canon EF 24-105 f/4 L IS Lens remaining available.

First Looks at Canon EF 35mm f/2 IS USM Lens Image Quality

Fri, 04 Jan 2013 09:53:20 CDT

ISO 12233 resolution chart test results have been added to the Canon EF 35mm f/2 IS USM Lens Review page.

The Canon EF 35mm f/2 IS USM Lens results are remarkably better than the results from the replaced Canon EF 35mm f/2 Lens in the mid and peripheral (corner) areas of the image circle. Results in the center appear slightly better in the IS lens, but the differences are very slight - not surprising as the old lens was very sharp in the center.

Here is a Canon 35 IS vs. 35 non-IS comparison (use the mouseover feature to see the differences).

Determining the Age of a Canon Lens Based on Serial Number

Mon, 10 Dec 2012 13:31:44 CDT

With help from friend-of-the-site Norbert, I have updated the Determining the Age of a Canon Lens page. It now appears possible to determine the age of a Canon lens based on the new 10-digit serial number.

I say "appears" as this chart is somewhat of a work in process. The numbers seem to be holding out well (or are at most 1 month behind) for the lenses we've checked to date. We can use your help in testing the chart - Please send us any certain discrepancies you find.

Sample Pictures Added to Canon EF 24-70mm II L and 40mm STM Lens Reviews

Mon, 10 Dec 2012 09:01:48 CDT

A handful of sample pictures have been added to the following reviews:

Canon EF 24-70mm f/2.8 L II USM Lens Review
Canon EF 40mm f/2.8 STM Lens Review

First Looks at Canon EF-M 18-55mm f/3.5-5.6 IS STM Lens Image Quality

Tue, 04 Dec 2012 08:17:18 CDT

ISO 12233 chart, flare, distortion and vignetting test results along with measurements & specifications have been added to the Canon EF-M 18-55mm f/3.5-5.6 IS STM Lens Review page.

Note that the Canon EOS M shares the Canon EOS Rebel T4i/650D imaging system. This includes the slightly sharper images output at our standard ISO 12233 test sharpness setting of "1" (with the Neutral Picture Style). The difference in sharpness is about the equivalence of a +1 sharpness setting.

As you have already guessed, I'm trying to decide if the EOS-M-tested lenses should be processed at Sharpness = 0 to be more equally represented with the rest of the lens tests - or if the standard setting should be adhered to.

All that said, I think that the Canon EF-M 18-55 is the lens that most people wanting a compact EOS M setup should be considering right now.

Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens Review Posted

Mon, 26 Nov 2012 06:32:19 CDT

Just posted: Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens Review.

First Looks at Canon EF-M 22mm f/2 STM Lens Image Quality

Thu, 15 Nov 2012 08:29:05 CDT

ISO 12233 resolution chart, flare, distortion and vignetting test results are now live on the Canon EF-M 22mm f/2 STM Lens Review page.

Obviously, these tests had to be shot with the new Canon EOS M MILC (Mirrorless Interchangeable Lens Camera). My Canon EF-EOS M Adapter just arrived, so I'll get some direct camera comparisons online in the near future.

Canon EF 24-70mm f/4 L IS Lens and EF 35mm f/2 IS Lens MTF Chart Comparisons

Tue, 06 Nov 2012 12:29:22 CDT

Canon MTF chart comparisons have been added to the Canon EF 24-70mm f/2.8 L II USM Lens Review and Canon EF 35mm f/2 IS USM Lens Review pages.

Canon EF 24-70mm f/2.8 L II USM Lens Review Posted

Fri, 02 Nov 2012 12:16:24 CDT

Part II of the Canon EF 24-70mm f/2.8 L II USM Lens Review is now online.

I'm very pleased with the AF performance and image quality this lens is delivering. I've used it a lot since part I of this review - especially for fall landscape photography. The results are superb.

I'll add some sample pictures soon.

B&H and Adorama now have the 24-70 L II in stock.

A Look at Canon EF 70-300mm L IS Lens and Extender Image Quality

Thu, 25 Oct 2012 07:00:00 CDT

The Canon EF 70-300mm f/4-5.6 L IS USM Lens Review has been updated to include Canon EF 1.4x III Extender and Canon EF 2x III Extender compatibility information including ISO 12233 Resolution Chart results. Here are the details:

The Canon 70-300 L is officially NOT compatible with Canon extenders. I've tried mounting Canon extenders to the 70-300 L - and they do not fit. The rear 70-300 L lens element physically hits the front element of the extender.

Then, in a major firmware update announcement for the Canon EOS 1D X, Canon included the 70-300 L and Canon EF 1.4x III Extender combo on a compatibility list.

Intrigued, I did more experimenting. What I learned is that the 70-300 L's rear element retracts into the lens far enough that, at about 250mm, there is enough clearance for Canon extenders to mount.

The available with-1.4x focal length range is about 350-420mm and 500-600mm with the 2x installed. Zooming out wider than the 250mm-or-so zoom ring mark results in a physical bump inside the lens. I'm guessing that it is the rubber around the edge of the extender element contacts the rear 70-300 L lens element or its barrel. I do not recommend mounting this combination due to potential damage the to lens.

I of course felt the need to try out these unsupported combinations. My solution to the damage risk issue was to Gaffer Tape the lens zoom ring to lock it at the 300mm mark while using extenders.

Mounting a 1.4x or 2x extender behind any lens reduces its aperture range by 1 or 2 stops respectively. At review time, only Canon 1-Series bodies can autofocus when using the very-dark f/8 max aperture the 70-300 L lens and 1.4x extender combination yields. Tested 1D X and 1Ds III bodies autofocused this combination.

No bodies can AF with the even-darker f/11 max aperture the 70-300 L and 2x combo yields. While it tries, the tested 1Ds III body cannot lock focus with this combination.

The interesting part of this story starts with the fact that the Canon Extenders do not report their presence when mounted behind the 70-300 L. The reported max aperture incorrectly remains f/5.6.

And what is much more interesting is that the 70-300 L and 1.4x combination's f/8 max aperture combination autofocuses even when mounted to the 60D (and presumably on most/all other Canon EOS bodies). Autofocus speed with the 1.4x extender is very, very slow on all tested bodies, but AF does work - even on the 60D.

Since I'm sure you are wondering what the image quality from these combinations looks like, here is a look at the Canon EF 70-300 L with EF 1.4x III Extender ISO 12233 image quality. Image softening from the 1.4x is very noticeable at f/8 in mid and outer regions of the image circle, though the center of the frame remains reasonably sharp. CA becomes pronounced with increasing amounts visible toward the outer image circle. Stopping down to f/11 results in modestly better image quality.

Here is a look at the Canon EF 70-300 L with EF 2x III Extender ISO 12233 image quality. Wide open, the results with the 2x installed are remarkably close to the performance of the 1.4x III, but more sharpness/contrast degradation is apparent - especially in the center of the frame. The 1.4x III takes a wide lead in the image quality race when stopped down to the with-2x's f/11 max aperture. Diffraction levels the results from both combinations at f/16. Again, the with-2x combination has problems locking autofocus.

While the image quality of the 70-300 L with extenders is not impressive, it can certainly be usable in a pinch (especially in the center of the frame with the 1.4x).

Canon EF 70-300mm L IS Lens and Canon EF 1.4x III Extender are Compatible?

Wed, 17 Oct 2012 21:06:30 CDT

The new Canon 1D X firmware special page includes the Canon EF 70-300mm f/4-5.6 L IS USM Lens (they actually say "f/4.5-5.6L") and Canon EF 1.4x III Extender combination under the "Current Canon EF Lens/Extender Combinations That Support Cross-Type Autofocus with Firmware Update Ver. 1.1.1 for EOS-1D X". (thanks John)

The problem is that Canon 70-300 L is not compatible with the 1.4x in the first place. The Canon USA website indicates that the 1.4x "... is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L." Granted, the compatible 70-200 f/4 L IS is missing, but the 70-300 L is not listed.

I've tried mounting the 1.4x to the 70-300 L before - and it does not fit. The rear lens element physically hits the front element of the extender.

What I just discovered, however, is that the 70-300 L's rear element retracts into the lens far enough that, at about 250mm, there is enough clearance for the 1.4x to mount.

The available focal length range is about 350-420mm. There is a physical bump at the lower end of that range with (guessing) the rubber around the edge of the extender element contacting the rear 70-300 L lens element or its edge ring. This combination indeed autofocuses on the 1D X with the new firmware.

I'll put this combination on the ISO 12233 chart testing list to see what the image quality looks like, but ... I'm not sure that I recommend mounting this combination due to potential damage the to lens. I'll try to find out what Canon says about this.

Sample Pictures Added to Reviews

Tue, 16 Oct 2012 14:57:08 CDT

I'm tackling a huge backlog of sample pictures this week. To get things started, sample pictures have been added to these reviews:

Canon EF 24mm f/2.8 IS USM Lens Review
Canon EF 28mm f/2.8 IS USM Lens Review
Canon PowerShot G1 X Digital Camera Review

Canon EF 28mm f/2.8 IS USM Lens Review Posted

Wed, 03 Oct 2012 10:29:21 CDT

Just posted: Canon EF 28mm f/2.8 IS USM Lens Review

Canon EF 24-70mm f/2.8 L II Lens Review Posted

Wed, 26 Sep 2012 07:18:01 CDT

Just posted: Part 1 (the major part) of the Canon EF 24-70mm f/2.8 L II USM Lens Review.

Update RE Canon EF 24-70mm f/2.8 L II USM Lens Review Posted

Fri, 21 Sep 2012 08:34:42 CDT

The Canon EF 24-70mm f/2.8 L II USM Lens Review will be completed in two parts. Here is why.

I often preorder more than one copy of Canon's new lenses as I like having at least two sets of image quality results to work from. I seldom see much variation between the multiple copies, especially between Canon's higher grade L lenses. Unfortunately, two copies of the Canon EF 24-70mm f/2.8 L II USM Lens were not enough.

Copy 1 is extremely sharp - until 70mm at f/2.8 where its performance is only average and even trails the original Canon EF 24-70mm f/2.8 L USM Lens in the center of the frame. An ISO 12233 chart retest delivered identical results. Real world shooting confirms the test results. This lens is so sharp at the rest of the focal lengths and at 70mm f/4 that I was hesitant to return it.

A significant backfocus problem at 70mm (note that manual focus is used for image quality evaluation) made the keep or return decision a no-brainer as I need to be able to use this lens on non AFMA-capable DSLRs.

Copy 2 of the 24-70 L II is very sharp in the center of the frame at f/2.8 throughout the entire focal length range - including 70mm. The problem with this lens is that the mid and outer portion of the image circle is not as sharp at f/2.8 as copy 1 (example). This is perhaps a decentering problem.

I think lens 1 properly examples what we should expect up until 70mm. I think lens 2 shows what we should expect in center-of-the-frame image quality at 70mm. Since lens 2 is soft in the corners at the other focal lengths, I think it is also softer in the corners at 70mm than it should be.

My conjecture is that the Canon EF 24-70mm f/2.8 L II USM Lens is incredibly sharp across the entire focal length range and at least the vast majority of the image circle.

I expect to get past the unfortunate QC anomalies I've initially encountered and expect to show you how great this lens really is. I'm not sure when I'll have a replacement lens (or lenses) available (the 24-70 L II is impossible to find right now), but hope to complete part 1 of the Canon EF 24-70mm f/2.8 L II USM Lens review next week.

Canon EF 24-70mm f/2.8 L II & 28-70mm f/2.8 L USM Lens Flare Results

Wed, 19 Sep 2012 08:03:28 CDT

Flare test results have been added to the Canon EF 24-70mm f/2.8 L II USM Lens Review page and to the Canon EF 28-70mm f/2.8 L USM Lens Review.

ISO 12233 Chart Results Posted for the Canon EF 28-70mm f/2.8 L USM Lens

Tue, 18 Sep 2012 13:08:29 CDT

ISO 12233 chart results are now available on the Canon EF 28-70mm f/2.8 L USM Lens Review page.

First Looks at Canon EF 24-70mm f/2.8 L II USM Lens Image Quality

Sun, 16 Sep 2012 06:52:22 CDT

ISO 12233 chart results are now available on the Canon EF 24-70mm f/2.8 L II USM Lens Review page.

Results from two copies of this lens are presented. Lens sample 1 is very impressively sharp/contrasty wide open from the center into the full frame corners save 70mm where it becomes that at f/4. Lens sample 2 is slightly softer in the corners than sample 1, but it is sharper in the center at 70mm f/2.8.

Note that results for the older 28-70 L will also be available soon.

Canon EF 24-70mm f/2.8 L II USM Lens Eye Candy

Sun, 16 Sep 2012 05:03:58 CDT

Many product images including the standard images (useful for comparison) have been added to the Canon EF 24-70mm f/2.8 L II USM Lens Review page. Some direct comparisons are available on that page - including a comparison between the 28-70 L and the 24-70 L version 1.

Standard product images were also added to the Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens Review page.

Roger's First Looks at the Canon EF 24-70mm f/2.8 L II USM Lens

Tue, 11 Sep 2012 13:28:01 CDT

Roger at LensRentals.com has posted his first impressions of the new Canon EF 24-70mm f/2.8 L II USM Lens.

I think that you will like what Roger is seeing.

Preorder the Canon EF 24-70mm f/2.8 L II USM Lens at: B&H or Adorama.

Just Posted: Canon EF 24mm f/2.8 IS USM Lens Review Posted

Mon, 10 Sep 2012 07:49:16 CDT

Just posted: Canon EF 24mm f/2.8 IS USM Lens Review

Standard Product Images Added for Fourteen Lenses

Thu, 06 Sep 2012 16:08:38 CDT

Standard camera lens product images (useful for size and feature comparisons) have been added to the following review placeholder pages:

Canon EF 24mm f/2.8 IS USM Lens Review
Canon EF 28mm f/2.8 IS USM Lens Review
Nikon 28mm f/1.8G AF-S Lens Review
Nikon 85mm f/1.8G AF-S Lens Review
Nikon 18-300mm f/3.5-5.6G AF-S DX VR Lens Review
Nikon 24-85mm f/3.5-4.5G AF-S VR Lens Review
Sigma 24-70mm f/2.8 EX DG HSM Lens Review
Sigma 50-150mm f/2.8 EX DC OS HSM Lens Review
Sigma 70-200mm f/2.8 EX DG OS HSM Lens Review
Sigma 105mm f/2.8 EX DG OS HSM Macro Lens Review
Sigma 150mm f/2.8 EX DG OS HSM Macro Lens Review
Tamron 24-70mm f/2.8 Di VC USD Lens Review
Zeiss 15mm f/2.8 Distagon T* ZE Lens Review
Zeiss 25mm f/2.0 Distagon T* ZE Lens Review

Canon EF 24-70mm f/2.8 L II USM Lens Now Shipping

Mon, 03 Sep 2012 20:21:09 CDT

Finally, I am hearing reports that the Canon EF 24-70mm f/2.8 L II USM Lens is shipping (with deliveries occurring in certain parts of the world).

According to dc.watch.impress.co.jp, Canon will be releasing this lens on Sep 6th.

Canon Japan is warning of expected initial shortages of this lens. (thanks Kaz)

Adorama is accepting preorders.

First Looks at Canon EF-S 18-135mm IS STM Lens Image Quality

Tue, 28 Aug 2012 08:26:31 CDT

ISO 12233 Chart results have been added to the Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens Review page.

This lens is sharper than its predecessor at the wide end. Here is a direct comparison between the Canon EF-S 18-135mm IS STM Lens and the older Canon EF-S 18-135mm IS Lens.

Capturing Rocky Brook Falls with the Canon EF 28mm f/2.8 IS USM Lens

Wed, 22 Aug 2012 15:17:22 CDT

The Canon EF 28mm f/2.8 IS USM Lens was among the pile of gear I hauled up to Northern Maine two weeks ago. I'm sharing a sample picture of Rocky Brook Falls in Northern Maine taken with this lens along with some information about the capture of this photo.

More Canon EF 24mm and 28mm f/2.8 IS USM Lens Test Results

Fri, 27 Jul 2012 14:45:08 CDT

Measurements along with flare, distortion and vignetting test results have been added to the Canon EF 24mm f/2.8 IS USM Lens Review and Canon EF 28mm f/2.8 IS USM Lens Review pages.

Canon EF 24mm and 28mm f/2.8 IS USM Lens Image Quality

Thu, 12 Jul 2012 11:53:10 CDT

ISO 12233 resolution chart results have been added to the following review pages:

Canon EF 24mm f/2.8 IS USM Lens Review
Canon EF 28mm f/2.8 IS USM Lens Review

Canon EF 40mm f/2.8 STM Pancake Lens Review Posted

Mon, 09 Jul 2012 10:46:36 CDT

Check out the just-posted Canon EF 40mm f/2.8 STM Pancake Lens Review.

Canon EF 500mm f/4.0 L IS II USM Lens Review Posted

Fri, 29 Jun 2012 12:59:04 CDT

Just added to the site: Canon EF 500mm f/4.0 L IS II USM Lens Review

The 500 L IS II review is going to sound similar to the Canon EF 600mm f/4.0 L IS II USM Lens Review.

These lenses are more similar than different, with size, weight, price and focal length being the significant differentiators.

More Canon EF 40mm f/2.8 STM Pancake Lens Results

Thu, 28 Jun 2012 12:04:45 CDT

Flare, vignetting and distortion test results along with specs and measurements are now available on the Canon EF 40mm f/2.8 STM Pancake Lens Review page. This lens continues to looks very good.

More product images are also available on that page.

Canon EF 600mm f/4.0 L IS II USM Lens Review Posted

Wed, 27 Jun 2012 10:06:57 CDT

Just finished: Canon EF 600mm f/4.0 L IS II USM Lens Review

As you probably expected, this is an incredible lens.

First Looks at Canon EF 40mm f/2.8 STM Pancake Lens Image Quality

Tue, 26 Jun 2012 13:13:42 CDT

ISO 12233 Resolution Chart sample crops have been added to the Canon EF 40mm f/2.8 STM Pancake Lens Review page.

These results would be quite good for a lens at any price, but they are very impressive for a tiny $200.00 lens.

The Canon EF 40mm f/2.8 STM Pancake Lens is in stock at B&H, Adorama and Amazon.

Canon's EF-S Moniker has a New Meaning

Thu, 14 Jun 2012 17:13:28 CDT

As Neuroanatomist points out, Canon has re-designated the meaning of "-S" portion of the "EF-S" moniker.

"EF-S" initially stood for "Short-back Focus". One example of this designation comes from the 20 Years of Canon EOS document that states:

"The launch of the EOS 300D also saw the debut of the new EF-S lens mount, the ‘S’ standing for ‘Short-back Focus,’ due to the fact that rear element of the lens is closer to the image sensor than in a regular SLR."

Neuroanatomist says:

"If you look at the Canon Technical Report for the EF-S 18-55mm f/3.5-5.6 USM, you'll see the notation, "*The "S" in "EF-S" comes from "Small image circle.""

Also, if you look at p. 128 of EF Lens Work III (it's in section 7, The Basics of Interchangeable Lenses...), there's a notation that, "* Some of the EF-S lenses does not employ a short back focus optical system." Yes, that's grammatically incorrect, but correctly quoted, and highlights the fact that while all EF-S lenses have a small image circle, not all of them have a short back focus design (I believe, for example, that the EF-S 17-85mm does not have a short back focus optical design)."

(thanks Nuero and Sean)

More Canon EF 500mm and 600mm f/4.0 L IS II USM Lens Information

Thu, 14 Jun 2012 14:20:44 CDT

Lens specs and measurements, distortion test results and vignetting test results have now been added to the Canon EF 500mm f/4.0 L IS II USM Lens Review and the Canon EF 600mm f/4.0 L IS II USM Lens Review pages.

New Canon DSLR and Lens Expected Availability

Thu, 14 Jun 2012 12:51:01 CDT

Here is a roll-up of the planned new Canon DSLR and lens availability dates that I am aware of:

Canon EOS 1D X

Canon Japan is stating "June 20, planned" for the arrival of this long awaited DSLR. Expect extremely limited quantities to be available for a long time. (thanks Kaz)

Canon EF 500mm f/4.0 L IS II USM Lens
Canon EF 600mm f/4.0 L IS II USM Lens

Both lenses are shipping now in the USA including from B&H and Adorama. But, supplies are extremely limited and only the earliest preorders are getting filled.

Canon EF 24mm f/2.8 IS USM Lens
Canon EF 28mm f/2.8 IS USM Lens

B&H just extended their expected availability date from June 17 to June 27.

Canon EF 40mm f/2.8 STM Pancake Lens

Retailers are not stating the availability date for this highly-anticipated lens. The USA press release says "end of June".

Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens

The big USA retailers are not even showing this lens on their websites. The USA press release again says "end of June". Will these initially be available in Rebel T4i kits only?

Canon EOS Rebel T4i / 650D DSLR

The T4i bodies are now showing up on retailer's shelves in the USA. (thanks "D")

The bodies and with-18-55mm IS II Lens kits showed up at Amazon as I was typing this.

B&H lists the body and body w/ 18-55 II IS Lens as "Expected availability: June 18 2012".

Adorama is saying "Delivery scheduled to start June/18".

The Canon USA press release indicates that the Movie Kit bundle is expected at the end of June, but retailers are not listing the availability dates for this T4i version.

Canon EF 200-400mm f/4 L IS USM Ext 1.4x Lens

Don't ask.

Canon EF 500mm and 600mm f/4.0 L IS II USM Lens Image Qualilty

Wed, 13 Jun 2012 07:42:01 CDT

ISO 12233 Resolution Chart sample crops have been added to the Canon EF 500mm f/4.0 L IS II USM Lens Review and the Canon EF 600mm f/4.0 L IS II USM Lens Review pages.

Not surprising is that both lenses turn in very impressive results. Comparisons with the older versions of both lenses are available. The 600 L II + 1.4x III compared to the 800 L is interesting.