Last week, I posted some images that compared the performance of the Nikon 70-200 f/2.8 GII ED to the Sony 70-200 f/4 G OSS FE when both were mounted to a Sony a7RII. Part of the controversy related to whether eyeballing images was a useful way to compare lenses when MTF curves were available. Well,… [Read More]

Yesterday, I made two posts aimed at discerning whether EFCS affected the maximum flash synch speed in the Sony a7RII and the Nikon D810. The answer was that EFCS made no difference, but there was an anomaly revealed in the testing: neither camera appeared to synch perfectly at its maximum specified synch speed. I figured… [Read More]

Earlier today, I posted the results of a test of the maximum synch speed of the Sony a7RII with both EFCS on and EFCS off. It appeared that the camera’s true synch speed was 1/200 second in both modes. That got me wondering. Would the D810, with a specified synch speed of 1/320 second, fare… [Read More]

There’s a rumor going around that the Sony a7RII’s max synch speed (which is spec’d by Sony as 1/250 second) is reduced if the electronic first-curtain shutter (EFCS) is turned on. That didn’t sit right with me. Testing seemed called for. I mounted a Zony 55 on an a7RII and aimed the camera at a… [Read More]