Thursday, March 3, 2011
Post Date: 3/3/2011 8:31:01 AM CT Posted By: Bryan
Wednesday, March 2, 2011
Post Date: 3/2/2011 8:14:01 AM CT Posted By: Bryan
Monday, February 28, 2011
Friday, February 25, 2011
Tuesday, February 22, 2011
Post Date: 2/22/2011 9:23:25 AM CT Posted By: Bryan
In an interview, Kevin Roach, the AP's VP for Broadcast News, discusses multi-format journalism
using Canon EOS 5D Mark II video.
Post Date: 2/22/2011 12:31:24 PM CT Posted By: Bryan
Friday, February 18, 2011
Friday, February 11, 2011
Post Date: 2/11/2011 2:37:49 PM CT Posted By: Bryan
Wednesday, February 9, 2011
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/4L IS USM Extender 1.4x Lens Review
Commentary added as well.
Post Date: 2/9/2011 10:46:26 AM CT Posted By: Bryan
Thursday, February 3, 2011
Monday, January 31, 2011
Post Date: 1/31/2011 10:01:47 AM CT Posted By: Bryan
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.
Post Date: 1/26/2011 11:05:13 AM CT Posted By: Bryan
Tuesday, January 25, 2011
Post Date: 1/25/2011 10:58:30 AM CT Posted By: Bryan
Thursday, January 20, 2011
I have uploaded some sample pictures to the Canon EF 70-300mm f/4-5.6L 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.
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
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
Post Date: 1/17/2011 2:55:46 PM CT Posted By: Bryan
Tuesday, January 11, 2011
Monday, January 3, 2011
Post Date: 1/3/2011 9:07:38 AM CT Posted By: Bryan
Wednesday, December 29, 2010
Canon Extender 1.4x & 2x ISO 12233 samples crops
have been added to the Canon EF 200mm f/2.0L 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.
Post Date: 12/29/2010 8:02:18 PM CT Posted By: Bryan
Tuesday, December 28, 2010
Monday, December 27, 2010
Tuesday, December 21, 2010
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
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
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
Wednesday, December 15, 2010
Post Date: 12/15/2010 8:57:52 AM CT Posted By: Bryan
Tuesday, December 14, 2010
Standardized test results have been added to the Zeiss 18mm f/3.5 Distagon T* ZE Lens Review
Zeiss Lens Test Update: I will be adding results for the rest of the Zeiss ZE lenses to the site over the next few days. I have changed out some test equipment and the flaring shown in the initial test of this group of lenses is far reduced. The actual cause of which I remain uncertain.
Post Date: 12/14/2010 9:28:11 AM CT Posted By: Bryan
Tuesday, December 7, 2010
Post Date: 12/7/2010 3:27:08 PM CT Posted By: Bryan
Monday, December 6, 2010
Monday, November 29, 2010
Monday, November 22, 2010
Post Date: 11/22/2010 1:25:48 PM CT Posted By: Bryan
Thursday, November 18, 2010
Standardized test results have been added to the Zeiss 100mm f/2.0 Makro-Planar T* ZE Lens Review
I have temporarily removed the ISO 12233 chart results for the Zeiss 50mm f/2.0 Makro-Planar T* ZE Lens and the Zeiss 100mm f/2.0 Makro-Planar T* ZE Lens review pages. While both lenses show excellent resolution right into the corners, the results are showing some flaring around the edges of the details in the chart. Zeiss does not think this should be happening, so I'm going to test a Canon lens simultaneuosly with a Zeiss lens - and perhaps test using two camera bodies. Stay tuned for the results (probably next week).
Post Date: 11/18/2010 9:29:07 AM CT Posted By: Bryan
Tuesday, November 16, 2010
Wednesday, November 10, 2010
Post Date: 11/10/2010 11:20:30 AM CT Posted By: Bryan
Monday, November 8, 2010
Post Date: 11/8/2010 10:54:35 AM CT Posted By: Bryan
Wednesday, October 13, 2010
Canon has posted an EF 8-15mm f/4L USM Fisheye Lens sample movie titled "with"
along with a Making of "with" documentary video.
Post Date: 10/13/2010 10:34:26 AM CT Posted By: Bryan
Friday, October 1, 2010
Post Date: 10/1/2010 11:56:45 AM CT Posted By: Bryan
Thursday, September 30, 2010
I was in the area, so I had to check out Rock Run in the Loyalsock State Forest.
Well, nothing is really in the area of this location, but it doesn't take much of an excuse to pull me to places like this. Prior to this trip, I did not find many Rock Run photos online, so I thought I would share a few of my Rock Run Pictures (Ralston, PA)
Post Date: 9/30/2010 3:47:38 PM CT Posted By: Bryan
Monday, September 27, 2010
Tuesday, September 21, 2010
Friday, September 17, 2010
Thursday, September 16, 2010
Monday, September 13, 2010
Thursday, September 9, 2010
The Sigma 85mm f/1.4 EX DG HSM Lens
(in F and Canon mounts) is scheduled to start shipping at the end of this month.
Get it at B&H
Post Date: 9/9/2010 10:35:19 PM CT Posted By: Bryan
I have updated the Zeiss 21mm f/2.8 Distagon T* ZE Lens Review
In the review, I highlighted an exposure problem I was having with this lens. I'm letting you know that Zeiss replaced the faulty lens with a new one - and the new one works fine.
Post Date: 9/9/2010 11:18:19 AM CT Posted By: Bryan
Wednesday, September 8, 2010
I was testing a Canon EF 600mm f/4 IS USM Super Telephoto Lens
on a Canon EOS-1Ds Mark III Camera
body for a new lens comparison tool (coming to the site in the near future). After completing a short test procedure, I removed the 600mm lens from the body - only to be greeted with a very-dishearteningly-noticeable amount of smoke.
I obviously had the 600mm lens framed too close to the sun for too long of a period of time - which I'm guessing was a minute or so. Here is a look at the blistered plastic in the 1Ds III.
Imagine taking an $8k lens off of a $6k camera and seeing a plume of very-black smoke come out. Wish I had video'd that! The good news is that the camera is fine - just cosmetic damage was done.
Post Date: 9/8/2010 12:47:02 PM CT Posted By: Bryan