In SNR graphs for Pentax K-30 and Pentax K5 there is something I do not get. For ISO after 1600 the SNR doesn't really decrease. Moreover comparing with Nikon D3200, we can clearly see that until ISO ...
Sensor cooling is a common technology to get less noise. Why isn't it available on high-end D-SLRs ? (see http://www.andor.com/scientific_cameras/ikon-m_cooled_ccd/ for an extreme example) I'm not ...
Sensor noise is a random variation in pixel values, but what kind of random is it? Does it follow a normal distribution, one of the gamma distributions, or something funky like an F distribution? ...
I use a 550D for photography. I got dust in my sensor few days ago while I was doing reverse macro and cleaned it from Canon Service Center. After cleaning I checked my sensor (taking picture of blue ...