Archives for August 2015

We’ve seen in the two previous posts that the Sony a7RII does wonders for the color casts that beset the a7R when used with short, pseudo-symmetric rangefinder lenses. Since the sensor stack is still the same thickness, I don’t expect any improvement in corner smear, but it’s certainly worth testing. I attached a Leica 18mm… [Read More]

In this test, the Leica 24mm f/3.4 Elmar-M ASPH proved to be one of the most difficult lens on the Sony a7R from the point of view of color casts, although the corner smear was not similarly bad. I don’t expect the a7RII, with its Sony-regulation sensor stack, to be any better with corner smear… [Read More]

In this test, the Leica 28mm f/2.8 Elmarit-M ASPH proved to be about the most troublesome lens on the Sony a7R from the point of view of color casts. It has also proven to be among the worst lenses on a7x cameras for corner smear. While I don’t expect the a7RII, with its Sony-regulation sensor… [Read More]

Yesterday I looked at shutter travel time for silent shutter operation on the Sony a7RII. Incidentally, we noted that the electronic first curtain shutter (EFCS) pretty faithfully emulated the acceleration of the mechanical second curtain, at least at 1/500 second. On the Nikon D810, EFCS stops working at shutter speeds above 1/2000. On the Sony… [Read More]

On the a7S, the silent shutter completes an exposure faster when you set the camera to APS-C mode. How about the a7RII in the same mode? If the following graph makes no sense to you, look here. 10 milliseconds/division. I count 5 divisions. That’s 50 milliseconds, or 1/20 second.  About half again as fast. That’s… [Read More]