This is the 38th in a series of posts on the Fujifilm GFX-50S. The series starts here. In an earlier post today, I determined that focusing the Fuji 63 mm f/2.8 manually wide open was a good choice. The focus shift in that lens is not enough to negate the more accurate focusing that can… [Read More]

This is the 37th in a series of posts on the Fujifilm GFX-50S. The series starts here. In the previous post, I showed you this aperture series for the Fuji 63 mm f/2.8 lens focused manually wide open and then stopped down in third-stop increments: Aside from the so-far-unexplained glitch at f/5, it looks pretty… [Read More]

This is the 36th in a series of posts on the Fujifilm GFX-50S. The series starts here. After looking at yesterday’s results for stopped-down manual focusing with the 63 mm f/2.8 lens on the Fujifil GFX 50S and noting that, in my longitudinal chromatic aberration (LoCA) testing, the Fuji 63 didn’t appear to have much,… [Read More]

This is the 35th in a series of posts on the Fujifilm GFX-50S. The series starts here. In the previous post, I did some testing of manual focus on-axis sharpness with the Fuji 120 mm f/4 macro lens, and compared the results with autofocusing. Now I’m going to so the same thing for the 63 mm… [Read More]

This is the 34th in a series of posts on the Fujifilm GFX-50S. The series starts here. In the previous post, I found some anomalous behavior with the Fujifilm GFX 50S autofocusing with the 120 mm f/4 native macro lens at f/5.6. There have been Internet discussions that say that there’s something strange about the… [Read More]