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 Wednesday, February 09, 2011
I have added specifications and MTF charts (have you seen these yet? impressive) to the following review placeholder pages:
 
Canon EF 300mm f/2.8 L IS II USM Lens Review
Canon EF 400mm f/2.8 L IS II USM Lens Review
Canon EF 500mm f/4.0 L IS II USM Lens Review
Canon EF 600mm f/4.0 L IS II USM Lens Review
Posted to: Canon News
Post Date: 2/9/2011 2:31:05 PM CT   Posted By: Bryan
I have added a larger lens picture and a large closeup picture of the intriguing built-in extender to the Canon EF 200-400mm f/4 L IS USM Extender 1.4x Lens Review page.
 
Commentary added as well.
Posted to: Canon News
Post Date: 2/9/2011 10:46:26 AM CT   Posted By: Bryan
 Thursday, February 03, 2011
Canon 2x EF Extender III Review
 
"If you have read the Canon 1.4x EF Extender III Review, you will find the Canon 2x EF Extender III Review familiar. The 2x III is similar to the 1.4x III and these reviews were prepared simultaneously."
Posted to: Canon News
Post Date: 2/3/2011 1:50:36 PM CT   Posted By: Bryan
 Monday, January 31, 2011
 Wednesday, January 26, 2011
ISO 12233 resolution chart test results for the Nikon 35mm f/1.4G AF-S Lens are now available on the site. Nice lens.
Posted to: Nikon News
Post Date: 1/26/2011 11:05:13 AM CT   Posted By: Bryan
 Tuesday, January 25, 2011
 Thursday, January 20, 2011
I have uploaded some sample pictures to the Canon EF 70-300mm f/4-5.6 L IS USM Lens Review.
 
The weather and landscape have not been very outdoor-photo-friendly here recently, but I intend to use this lens a lot more this year - including on a couple of photo trips I have planned. So, I should have more (and more varied) sample pictures to share later.
 
Be sure to check out the comments and tips for each picture.
Posted to: Canon News
Post Date: 1/20/2011 10:46:17 AM CT   Posted By: Bryan
 Wednesday, January 19, 2011
ISO 12233 chart test results have been added to the Sigma 85mm f/1.4 EX DG HSM Lens Review page.
 
Be sure to find the short, must-read commentary on the review page.
Post Date: 1/19/2011 11:23:21 AM CT   Posted By: Bryan
 Monday, January 17, 2011
Posted to: Canon News
Post Date: 1/17/2011 2:55:46 PM CT   Posted By: Bryan
 Tuesday, January 11, 2011
ISO 12233 resolution chart results for the Canon Extender EF 1.4x III and Canon Extender EF 2x III have been added to the following reviews (the III results are the last pair of focal length options for each lens):
 
Canon EF 70-200mm f/4.0 L USM Lens Review
Canon EF 70-200mm f/2.8 L USM Lens Review
Canon EF 135mm f/2.0 L USM Lens Review
Canon EF 180mm f/3.5 L USM Macro Lens Review
Canon EF 200mm f/2.8 L II USM Lens Review
Canon EF 200mm f/2.0 L IS USM Lens Review
Canon EF 300mm f/4.0 L IS USM Lens Review
Canon EF 300mm f/2.8 L IS USM Lens Review
Canon EF 400mm f/5.6 L USM Lens Review
Canon EF 400mm f/4.0 DO IS USM Lens Review
 
Canon 1.4x III and 2x III results for the rest of the compatible Canon lenses are coming soon.
 
ISO 12233 resolution chart results have also been added to the following Nikon lens review placeholder pages:
 
Nikon 24-120mm f/4G AF-S VR Lens Review
Nikon 28-300mm f/3.5-5.6G AF-S VR Lens Review
Nikon 55-300mm f/4.5-5.6G AF-S DX VR Lens Review
Nikon 85mm f/1.4G AF-S Lens Review
 
I've had some setbacks in getting full the Nikon lens reviews going, and I remain committed to Canon reviews as my priority, but I am making a significant time-related life change that will (hopefully) allow me to begin these full reviews soon. Enjoy the ISO 12233 chart results in the mean time.
Post Date: 1/11/2011 3:35:29 PM CT   Posted By: Bryan
 Monday, January 03, 2011
 Wednesday, December 29, 2010
Canon Extender 1.4x & 2x ISO 12233 samples crops have been added to the Canon EF 200mm f/2.0 L IS USM Lens Review. The Extender III samples are the two longest focal lengths available for this lens on the Canon EOS 1Ds III. The first link is to a mouseover comparison between the 1.4x II and 1.4x III.
 
Notice that the 1.4x III has less barrel distortion than the 1.4x II. This makes the center-of-the-frame details slightly smaller in a comparison. This difference will be most noticeable in the top crop shown in the ISO 12233 chart tool.
 
Noticeable in the bottom crop is the reduced CA (Chromatic Aberration) in the 1.4x Extender III.
 
The Extender 2x III is slightly sharper than the Extender 2x II, but the Extender 1.4x III is not significantly different than the Extender 1.4x II in this regard.
Posted to: Canon News
Post Date: 12/29/2010 8:02:18 PM CT   Posted By: Bryan
 Tuesday, December 28, 2010
Standardized test results have once again been added to the Zeiss 100mm f/2.0 Makro-Planar T* ZE Lens Review page.
Post Date: 12/28/2010 10:54:49 AM CT   Posted By: Bryan
 Monday, December 27, 2010
Standardized test results have once again been added to the Zeiss 50mm f/2.0 Makro-Planar T* ZE Lens Review page.
Post Date: 12/27/2010 10:33:29 AM CT   Posted By: Bryan
 Tuesday, December 21, 2010
Standardized test results have been added to the Zeiss 35mm f/2.0 Distagon T* ZE Lens Review page.
Post Date: 12/21/2010 9:17:53 AM CT   Posted By: Bryan
 Monday, December 20, 2010
By popular request, ISO 12233 resolution chart samples for the Tamron 70-300mm f/4-5.6 Di VC Lens have been added to the site.
 
While I hope to get a full review of this lens (along with many others) on the site at some point, the ISO chart results tell us a lot about the image quality of a lens. And in this case, the Tamron 70-300 performs very impressively well for it's price point. Corners degrade as the focal length increases and 300mm performance is not so great, but again, this image-stabilized lens is currently selling for less than $400.00 delivered after rebate at B&H.
 
However, I need to add a possible warning that these results do not tell the complete story in this case. I had to spend a more-than-usual amount of time focus testing this lens - just to confirm what I was seeing. And my initial (still early) determination is that my Tamron 70-300mm f/4-5.6 Di VC Lens is very inconsistent in the focus accuracy department. Life is good when it gets focus right, but a sharp lens does not deliver sharp subjects if not focused accurately.
 
 
I am also getting a lot of requests for a Sigma 85mm f/1.4 EX DG HSM Lens Review. To bring you at least the standardized results from the Sigma 85, I have to date, purchased and returned two of these lenses. The first was consistently front focusing. The second was focusing so inconsistently that I wished for the first one back. Roger at LensRentals.com is having the same problems - he has even posted a warning on his Sigma 85mm f/1.4 EX DG HSM Lens rental page.
 
Third party lens focus accuracy problems have consumed far more of my time than I care to remember. I'll probably get over it enough to order the third copy of this lens after Christmas. Stay tuned.
 
 
B&H has just announced free overnight shipping on Canon and Nikon cameras. You can have one in time to use Christmas morning. B&H also notes that today is the last day for standard shipping for delivery in time for Christmas.
Post Date: 12/20/2010 9:58:31 AM CT   Posted By: Bryan
 Thursday, December 16, 2010
Standardized test results have been added to the Zeiss 28mm f/2.0 Distagon T* ZE Lens Review page.
Post Date: 12/16/2010 12:28:22 PM CT   Posted By: Bryan
 Wednesday, December 15, 2010
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