Can't edit now, but dark current removal isn't as widespread as you think it should be. Most cameras don't do it at all and will add (actually, subtract) a dark

Can't edit now, but dark current removal isn't as widespread as you think it should be. Most cameras don't do it at all and will add (actually, subtract) a dark frame when the exposure time goes over a threshold (say, longer than 1 sec exposure) in which the camera takes another new photograph, with the shutter closed and then subtracts that dark frame from the original picture which is still in memory. This is quite useful actually, but not the same quality as dark current removal/supression. As for those saying about the over 100% QE numbers... I didn't gather those, all I can say that a few years back that list was accepted as generally reasonable measurments. Besides that, I've read of some imaging techniques which can form images with a really low number of photons (for example [0]), but those generally require a special setup (infrared light, lasers, that sort of stuff). So yeah, those QE's do seem fishy, but it could alse be the result of a photon affecting more than one photosite (or maybe the marketing team hearing about QE and finding a way to raise that number through "smart counting"). [0] http://www.nature.com/articles/ncomms12046 http://www.nature.com/articles/ncomms12046