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noise is generally undesirable in photography, and many photographers want to try and reduce it when taking photographs. Noise reduction tends to be about preventing noise in the first place, where as noise removal is a description of post-processing techniques for dealing with noise that is in a photograph.
2
votes
How does in camera dark frame noise reduction work?
I am confident that the exact method used by each camera manufacturer is different and company-confidential. All manufacturers have a large vested interest in getting the maximum image quality using m …
3
votes
Do low ISO photographs need Long Exposure Noise Reduction?
Long exposure noise reduction is actually dark-frame subtraction done automatically in-camera.
If you are taking many shots and would like to avoid the time delay, you can take just one dark frame, w …