Thread: N86 Camera vs. N900 Camera
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attila77 is offline attila77
2009-11-08 , 01:45
Posts: 3,319 | Thanked: 5,610 times | Joined on Aug 2008 @ Finland
#44
Originally Posted by titan View Post
nope. It's based on physical limitations (wavelength of visible light is ca. 400-700nm)
Please, do the math. On the N900 (with a 1/2.5" sensor) it would become an issue at ~f/4 and above. The N900, however, has f/2.8 optics, so it's within that limit even with TWICE the pixels mentioned on the site.

The thermal noise has already been reduced so much in previous generations that the efficiency factor is about 80-90%.
Efficiency factor of what ? You can't do a blanket statement like that, when different sensor technologies result in vastly different signal to noise characteristics, and noise itself is a mixture of at least a dozen different factors, thermal noise is just one of which.

there will always be a trade-off between noise and resolution.
Correct. Except you CAN trade resolution for less noise, but you CANNOT trade low-noise for resolution.