Canon Line Offset Noise

Started Oct 20, 2009 | Discussions thread
OP John Sheehy Forum Pro • Posts: 22,814
Re: Impossible to do Dark Frame Subtraction on banding

erikstefan wrote:

Of ccourse the "wires" are behind the photocells (pixels), not in between.

But the concept is still the same that the gaps between columns of photocell are dark, creating vertical dark lines as a banding noise.

I notice on 5D2 low iso, at shadows area the banding is vertical darker lines over lighter background.

With all due respect, what you wrote makes no sense in any way, shape or form.

The physical space between pixel columns or rows (however they may be wired) don't have anything to do with periodicity in RAW data. All the modulations of which you speak occur in a one-pixel period.

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John

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