maemo.org - Talk - My Camera Quality Metric

Quote:

Originally Posted by Bratag (Post 417299)

What I have noticed is this - images that are taken at 5MP should be fairly large - instead we end up with ~800k images. My suspicion is that Nokia have done the same thing Google did in order to get speedy writes to the sdcard. They have dropped the Jpeg quality to < 100%

Its difficult for me to be able to verify this unfortunately. Anyone with a little more knowledge than me care to weigh in on this?

diffraction makes most of the 5mpix unused. all the details disappear and small sensor makes much noise and noise removal removes rest of the details.

there is about nothing significant to do with software with cameras integrated to cellphones etc. and decreasing jpeg quality probably makes no realistic difference....

a small example:
you can stretch this heavily cropped (100% crop) image taken from 4mpix raw image data about 2-3x or more and the quality is better than with N900's 100% crop.

http://peltsip.pp.fi/samplet/tikanperse1.JPG