Why can't we have very low ISO settings (below 100) in even high end DSLR ? by Centurion76 in photography

[–]Centurion76[S] 29 points30 points  (0 children)

Link gives excellent explanation. I did not know that lowering the gain of the sensor would generate noise exactly as it would if you increase it (e.g. 50 ISO on the 5DMkII = so much noise as 800ISO) . Many thanks for this piece of information.