EXCERPT page containing first few paragraphs. 2021-05-06 22:25:24
UA_SEARCH_BOT_null @ 220.127.116.11
Like most brands, Fujifilm does a lame job at publishing MTF charts—wide open only, and no description of the spectral balance for the claimed performance, and it looks to be diffraction-ignoring computed fantasy MTF to boot—not measured with a real lens. The fact that Fujifilm does not publish anything but wide open performance is disappointing, and even that is not explicitly stated.
Overall lens contrast at f/4 is outstanding over the entire frame for coarse, medium, fine structures. Probably f/4.5 is optimal, if only to tweak the corners slightly for a moderate astigmatism; after that f/5.6 will only drop contrast from diffraction—worth keeping in mind on the GFX100 and GFX100S.
Article continues for subscribers...
Diglloyd Medium Format is by yearly subscription. Subscribe now for about 33 cents a day ($120/year).
BEST DEAL: get full access to ALL 8 PUBLICATIONS for only 68 cents a day ($249.95)!
These systems are hugely expensive, so make the right choice for your own needs (full frame vs medium format).
- In-depth lens evaluations covering behaviors not likely to be found anywhere else, based on real-world field shooting.
- How to configure menus and buttons and best operating practices, gotchas and how-to.
- Real world examples with insights found nowhere else. Make sharper images just by understanding lens and camera behaviors.
- Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to 100 megapixels filling up to 5K display, plus large crops.
- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.