In a previous post, I tested the field  curvature of the Fuji 35-70 GF using Roger Cicala’s quick and dirty method. A reader said he was having difficulty with what appeared to be field curvature in the corners. That gave me an idea for a modifications of Roger’s test. I rolled the camera so that… [Read More]

I finally got around to doing some quantitative tests on the Fuji 35-70 GF. This is the first of several posts with the results of those tests. Here’s the test protocol: RRS carbon fiber legs C1 head 35, 45, and 70 mm focal length Target distance as per the table below ISO 100 Electronic shutter… [Read More]

  In the previous post, I compared the Fuji 35-70 GF against the 32-64 GF using foliage as the subject. I looked at the center of the images there; now I’ll look at the corner performance. I set up the GFX 100S as follows: RRS 4-series Versa legs Arca-Swiss C1 2-second self timer ES ISO… [Read More]

  I set up on one of my usual foliage test scenes, shown here with the 35-70 at 35 mm wide open.   I set up the GFX 100S as follows: RRS 4-series Versa legs Arca-Swiss C1 2-second self timer ES ISO 100 AF-S for three shots, picking the best sharpness in post; this calibrates… [Read More]

I ran Roger’s Q&D test: https://www.dpreview.com/articles/1351719699/roger-cicala-field-curvature-for-fun-and-profit         This looks really good.