The Leica 180mm f/3.4 Apo-Telyt-R is about the longest lens that feels right handheld on the alpha 7 cameras, with the exception of the Sony 70-200 f/4 FE lens. The 180 is really quite well suited to the camera. How much does IBIS (known to Sony as SteadyShot) help? I employed a test protocol based… [Read More]
Archives for January 2015
Let’s keep this equipment analysis in perspective
I use a lot of digital ink on technical minutiae. I don’t apologize for that. But let’s not forget the important part of photography. Many years ago, at a post dive trip party, I brought a set of (Fuji Pictrography, which shows you how long ago it was) prints. The hostess, who was a writer, said,… [Read More]
MTF sharpness testing with Lightroom
From the mailbag: Nice A7II IBIS test. It would be great to compare to the A7 sans IBIS. A comment and a question: It looks like the A7II has a stronger AA in one direction (H), similar to the A7 and D6x0. Assuming you are trying to evaluate the capabilities of the (IBIS) hardware, why… [Read More]
Testing IBIS on the Sony a7II
There are many small improvements in the Sony alpha 7II over the alpha 7 which it replaces. There is one big one: the in-body stabilization system (IBIS), which Sony calls SteadyShot. It has the potential to reduce the effects of camera motion somewhat when used with lenses that have optical stabilization, and a lot in… [Read More]
D810 vs a7R sensor performance
Now I’m ready to tackle the question that interests at least some of you: how does the sensor in the Nikon D810 compare with the one in the Sony alpha 7R? The D810 has greater full well capacity: But the a7R has lower read noise through much of the ISO range: When you put those… [Read More]
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