Archives for 2015

In the previous post we looked at color shifts in pushed Sony a7RII images, with push amounts from nothing to +5 stops, which is all you can get with the Lightroom Exposure control. See that post for the details of the conditions under which the images were captured. Now, I’d like to present blowups to… [Read More]

One of the things that I usually do with ISOless cameras is make a series of images of my bookcase that have all received the same exposure, but with different in-camera ISO settings. I then use the Exposure control in Lightroom (Lr) to push the “underexposed” images by the amount that they were “underexposed”. I… [Read More]

We’ve seen in 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 24mm f/3.8 Elmar-M… [Read More]

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]