COMPARE AND CONTRAST NOTES
- sensor pixel density sets a limit on the final output resolution of images captured with that sensor
- most digital sensors are arranged in rectangular grid pattern,making certain images suspectible to moire pattern artifacts
- film is not affected my moire because of the random orientation of the silver salts in its emulsion, however the pattern of these silver salts may become visible upon enlargement creating the patterns called "grain" in the final output
- short noise,produced by spontaneous fluctuations in detected photo currents, degrades darker areas with electronic images with random variations of pixel colors and variation
- traditional exposure metering and autofocus systems employ secondary sensors
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