Re:Reflected hidden faces in photographs revealed in pupil
by hahainternet on Friday December 27, 2013 @01:50PM
(#6972002)
> Science missions use 2mp CCDs mostly because of the sensitivity
It would be foolish to suggest there was a single motivator for inclusion of a sensor. In reality it is a combination of our answers. Large sensors allows lower gain and better noise performance, enables smaller aperture use at acceptable sharpness, takes less resources to process, transmit etc.
You're not wrong in mentioning it though. Although FF at 25600 is going to be piss poor even if it's Nikon / Sony.
edit: corrected stupid misspelling
Re:Reflected hidden faces in photographs revealed in pupil
by kika on Friday December 27, 2013 @03:39PM
(#6972523)
You've got very high standards in image quality :-)
Nikon D600 at 25600: http://www.imaging-resource.com/PRODS/nikon-d600/nikon-d600G...
Not even close to "piss poor" in my book.
Re:Reflected hidden faces in photographs revealed in pupil
by ygra on Saturday December 28, 2013 @06:25AM
(#6974738)
That's about the noise level and sharpness I have on my EOS 40D with ISO 1600. I think I'm going to cry in a corner a little.
That being said, you don't go that high unless you're very desperate and the sensor itself can go up to 6400, the rest is software.
There's also technological barriers for creating large megapixel CCDs as opposed to CMOS. Large CCDs are usually created by "stitching" multiple sensors together, which increase their price as a square of the size.
You can shoot fullframe (35mm) camera at ISO 25600 and get decent results, but if you crank up signal amplification on iPhone to 25600 you'll get nothing but random color dots :-)