This is part 4 of a test of the Sony 12-24 mm f/4 FE lens. The test starts here. There have been reports of corner color casting with the Sony 12-24 mm f/4 lens on the Sony a7RII. I thought I’d check. Corner color casting is usually caused by color filter array (CFA) crosstalk, a phenomenon… [Read More]
Archives for July 2017
Sony 12-24/4 on a7RII — distortion
This is part 3 of a test of the Sony 12-24 mm f/4 FE lens. The test starts here. Some people are complaining about the Sony 12-24 mm f/4 lens distortion. One reviewer even used the phrase “fun-house mirror” as a descriptor. I thought I’d take a look. Here are images at 12, 18, and… [Read More]
Sony 12-24/4 on a7RII at 12 & 24 mm
This is part 2 of a test of the Sony 12-24 mm f/4 FE lens. The test starts here. In the previous post, we looked at the Sony 12-24/4 at 18 mm, and threw in a once-mighty Nikon zoom for comparison. It wasn’t much of a contest. In the corners the Sony was shockingly superior. … [Read More]
Sony 12-24/4 on a7RII at 18 mm
This is the first part of a report on the subject lens. To find links to all the others, scroll down to the bottom of this page — below the comments — and follow the pingbacks. They are titled, so you will be able to see which ones are of interest to you without going… [Read More]
Zeiss 135/2 Apo Sonnar on GFX
This is the 69th in a series of posts on the Fujifilm GFX-50S. The series starts here. There has been some discussion of the long-revered Zeiss 135 mm f/2 Apo Sonnar recently, and I was surprised to find that I’d never checked it for longitudinal chromatic aberration (LoCA) and focus shift. I have the ZF.2… [Read More]