We saw in the previous post that the long exposure noise reduction (LENR) option in the Sony a7RII reduced the precision from 13 to 12 bits. We have previously seen that some 12-bit modes bring spatial filtering to the a7RII. Is LENR one of them? Here’s the spectrum of a 1000×1000 sample from the center… [Read More]
Archives for August 20, 2015
Sony a7RII long exposure noise reduction
I’ve had a couple of questions about the long exposure noise reduction (LENR, aka dark-frame subtraction) in the a7RII. I’ve had to do some research, since I never have used this function in any alpha 7 camera. It’s not that LENR is useless, just that its usefulness is limited, and that the kind of photography… [Read More]