In the last post, I promised pictures. Here goes. But before you look, a few words about what you’re seeing. These are all examples of wide f-stop images — f/4 for the f/4 and f/3.8 lenses, and f/2.8 for the others. Wide openings show falloff and corner color shifts at their worst. They’re also photographs… [Read More]
Archives for December 10, 2013
Sony a7R corner cast graphs
When I tested the NEX-7 with M-Mount lenses, I noticed a lot of color shifts in the corners with some lenses. All else being equal, the errors seemed to get worse the closer the exit pupil of the lens was to the sensor, and the wider the aperture. M-mount lenses, being made for a body… [Read More]