EXCERPT page containing first few paragraphs. 2023-10-01 08:25:51
UA_SEARCH_BOT_null @ 22.214.171.124
All cameras have noise in the near-black shadows. One way to assess what gremlins might pop up in real-world images is to take a look at the dark frame pattern noise, shot with the lens cap on (no lens) at a high shutter speed.
This page looks at dark from pattern noise at ISO 100, including the individual color channels (ProPhotoRGB color space).
UPDATE April 2021: possibly a firmware update has improved matters (unknown), since the Fujifilm GFX100S shows a really clean result for its dark frame, and it has the same sensor.
Dark frame noise, ISO 100, EFCS
The horizontal lines are most likely related to the use of PDAF pixels (phase detection autofocus), showing that everything comes at a cost.
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.