Canon Line Offset Noise

Started Oct 20, 2009 | Discussions thread
OP John Sheehy Forum Pro • Posts: 22,804
Re: John's 7D has arrived!

bronxbombers wrote:

does yours have balanced G1 and G2?

Yes. Can't get any difference more than about 0.1 - 0.25% Most of the problem units we've seen were in the 1.5% and greater range.

I've also tested the idea of using the blackframe from one ISO 100 to subtract the banding from another, and the vertical banding almost completely disappears (all the periodic element does; what remains is low-frequency and non-periodic).

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John

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