Archives for February 2016

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. A reader thought that point spread functions (PSFs) might be better for… [Read More]

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. In the preceding post, I reported on some left/right color fringing with… [Read More]

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. I’ll get back to the MTF stuff before this test is over,… [Read More]

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. I reprocessed the 3.5-meter DCRAW-developed test shots from the lateral chromatic aberration… [Read More]

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. I set out to measure longitudinal chromatic aberration for the various lenses…. [Read More]