Archives for 2017

This is the 30th in a series of posts on the Fujifilm GFX-50S. The series starts here. There has been a lot of talk on the ‘net that the resolution differences between the a7RII and the Fuji GFX 50S don’t amount to much, so why suffer the increased hit on the pocketbook, loss of features,… [Read More]

This is the 29th in a series of posts on the Fujifilm GFX-50S. The series starts here. I took the same general experimental protocol that I used in the last post on the Fuji 120mm f/4 G macro lens and applied it to the 63 m f/2.8 “normal” lens. Subject distance was 2 meters. Wide… [Read More]

This is the 28th in a series of posts on the Fujifilm GFX-50S. The series starts here. A while back, I developed a protocol for measuring focus shift and longitudinal chromatic aberration (LoCA). I’ve improved it over the last year or so, but it’s still the same idea, as described here: Towards a macro MTF… [Read More]

This is the 27th in a series of posts on the Fujifilm GFX-50S. The series starts here. I made a series of dark-field exposures with the GFX at ISO 1000 with LENR turned off. The shutter speeds were in third-stop increments from 1/4000 second to 30 seconds. The GFX will make longer timed exposures, and I… [Read More]