There have been repeated assertions on some photography fora that the a7R is deficient in corner sharpness. These statements go beyond the situations where corner smear develops because of ray angles that deviate significantly from orthoganality (what you get with many Leica M-mount lenses), and say that the a7R is soft in the corners in… [Read More]

The Sony/ Zeiss 55mm f/1.8 Sonnar is the first native FE (Full frame E) I’ve tried on the a7R. This is not a particularly small lens, but it’s very light, and makes for a happy shoulder when mounted to the a7R body. The first thing I did was check for falloff and color shift, with… [Read More]

The Leica 90mm f/2 APO Summicron is a great lens, and so is the Nikon 85mm f/1.4 AF-S G. The Leica lens is, like most Leica glass, a bunch more money. Wouldn’t it be great if the Nikon turned out to be as good? Now that we’ve got the a7R, we can test these two… [Read More]

This post has the 1:1 crops from the Leica WATE on the Sony a7R images referenced in the preceding post. Center, 16 mm, f/4: Center, 16 mm, f/8: Center, 18 mm, f/4: Center, 18 mm, f/8: Center, 21 mm, f/4: Center, 21 mm, f/8: Upper left, 16 mm, f/4: Upper left, 16 mm, f/8: Upper… [Read More]