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]
Archives for 2013
Leica 90mm & Nikon 85mm on the a7R
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]
Testing for shutter slap
The vibration issues with the a7R’s shutter have caused me to spend more time thinking about how to test for shutter-induced vibration. The same techniques can be used to test for mirror-slap vibration in SLRs, but that’s not usually too much of an issue, for two reasons: mirror-slap vibration is larger, and therefore easier to… [Read More]
Leica WATE on the Sony a7R — crops
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]
Leica WATE on the Sony a7R
There’s been some interest in how the Leica 16/18/21 Tri Elmar ASPH — aka the WATE, for Wide Angle Tri-Elmar — performs on the Sony a7R. Because it is designed with its exit pupil quite a ways from the sensor plane, there is reason to suspect that it should work well on the a7R. The… [Read More]
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