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]
Archives for April 2017
Fuji 120/4 macro focus shift and LoCA
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]
Magical lenses?
A DPR reader posted a request for folks to post names of, and images made with, the “magical” lenses that they own. I thought through my lens collection, and didn’t come up with any that seemed to fit that description. That got me thinking. There are short lenses and long lenses. There are fast lenses… [Read More]
Fuji GFX read noise vs shutter speed
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]
Making lemonade from the GFX slow electronic shutter
It occurred to me that the 1/4 second transit time of the GFX could be put to use.
- « Previous Page
- 1
- …
- 4
- 5
- 6
- 7
- 8
- 9
- Next Page »