This is the 63rd in a series of posts on the Fujifilm GFX-50S. The series starts here. I measure focus shift and longitudinal chromatic aberration (LoCA) in lenses in the following way. I mount the camera to a Cognisys computer-driven focusing rail. I set the controller up to use 160 mm of travel and make… [Read More]
Archives for June 2017
Fuji 23/4 on GFX, Nikon 14-24/2.8 on D810
This is the 62nd in a series of posts on the Fujifilm GFX-50S. The series starts here. A few days ago, I compared the 23 mm f/4 Fuji lens on the GFX to the Zeiss Batis 18 on the Sony a7RII. The Batis, while looking like a fine lens in its own right, didn’t come… [Read More]
Zeiss Batis 18/2.8 IR hotspotting
I’ve had a request to check the Batis 18 mm f/2.8 for infrared hotspotting. I used a Sony a7RII that has been modified by LifePixel with their “Standard IR” sensor filter. I apologize for the fact that the images aren’t framed the same. The fog was burning off, I wanted to use it, and I… [Read More]
Fuji 23 on GFX, Batis 18 on a7RII — distortion
This is the 61st in a series of posts on the Fujifilm GFX-50S. The series starts here. In the previous post, I looked at the general rendering of the GFX with the Fuji 23 and the a7RII with the Batis 18. Now I’m going to show you some images designed to get a handle on… [Read More]
Fuji 23 on GFX, Batis 18 on a7RII — kickoff
This is the 60th in a series of posts on the Fujifilm GFX-50S. The series starts here. I have received copies of the Fuji 63 mm f/4 GFX lens, and also the 100 mm f/2. I’ll be testing both of them. I always like to do comparison tests for qualitative things, and I have a… [Read More]
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