Never ending quest, Part 2
AuthorTopic: Never ending quest, Part 2 Read 513 Times
Silver MemberPosts: 77New Article Announcements & Discussionson: July 3, 2020 at 10:15 am
You listed these criteria:
Resolution – for given sensor size, relates to pixel density and capture of fine detail
Noise Generation – caused by heat build-up from high pixel densities and using high ISO’s
Dynamic Range – how many exposure zones in f-stop equivalents a sensor can handle between pure white and pure black beyond which no detail information exists
Color Accuracy – Fidelity of color recording, usually related to sampling levels & sensor design
Color Gamut – the amount of color information a sensor produces, e.g. 16-bit vs 14-bit
Sensor Uniformity – the extent to which quality control can eliminate errant pixels & flaws
I believe that artifacts are a big component of IQ. Raw file, mostly sensor-based, artifacts include, but are not limited to:
- Luminance aliasing
- False-color aliasing
- PDAF striping
- PDAF banding
- Amp glow
- Blooming (not so much anymore)
- Stepper inconsistencies — probably included in sensor uniformity
- Column ADC/amp inconsistencies — probably included in sensor uniformity
- Spatial filtering (eg star-eating)
- Compression artifacts (like craw’s)
Also, precision and gamut are different things. Changing precision from 16 to 14 bits does not affect gamut.
- This topic was modified 3 years, 3 months ago by Jim Kasson.
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