Early on in my testing of the Sony a7R, I ventured the opinion that the camera probably wouldn’t exhibit image degradation from shutter slap with lenses of 135mm or shorter focal length with the camera in landscape orientation with the camera mounted directly to a tripod head (no lens collar). Then I found image degradation… [Read More]
Search Results for: Leica 100mm
Sony a7R — taking stock
Upon thinking about it, I find yesterday’s corner color cast results with the M-mount lenses on the a7R pretty depressing. We’ve already seen that lenses long enough to require a lens collar – or even, I suspect, mounting to the tripod via a plate on the adapter — have a problem on the a7R because… [Read More]
Sony a7R shutter vibration with 135 Telyt
I mounted a Leica 135mm f/3.4 APO Telyt on the a7R, mounted the camera on the tripod head with a generic RRS plate (RRS does not at present have custom plates for the a7 or a7R), and made an image (details in the preceding post). Here it is with as 6x expansion vertically and 2x… [Read More]
Sony a7R testing, part 1
[I’ve noticed that people are linking to this page a lot, since it is the first page of my a7R work. However, that work involves a lot of posts, so I’m adding a little roadmap. If you are more interested in the Sony alpha 7 (without the R), go here. If you want an overview… [Read More]
Sharpness testing, part 14
There has been discussion on the web (here) of unsharp Leica M240 images made with live view. Now that I have a tool to measure vibration-induced lack of sharpness, I thought I’d take a look. When you’re in live view mode on the M240 the shutter is open. When you press the shutter release, the… [Read More]
- « Previous Page
- 1
- …
- 3
- 4
- 5
- 6
- Next Page »