Canon Line Offset Noise

Started Oct 20, 2009 | Discussions thread
Mark H
Mark H Veteran Member • Posts: 3,803
Re: Some info for cooling down

GaborSch wrote:

I don't see any reason to change this discussion into an argumentation regarding the persons instead of thew views.

I quite agree (surprising though it may seem to some people) - however, when a contributor starts throwing accusations of "shill" and "libel" and corporate "collusion" they should not be in the least surprised when the discussion heads off in that direction. [N.B. I'm not talking about Gabor here].

Now, on to your observation here...

I posted at the very beginning, that I experimented with this quite natural idea. Unfortunately the result is not good. When using a black frame as "template" for black level corrections for another shot with the same camera, same ISO, even if these shots have been made within seconds, the result is not satisfactory: the banding does not disappear completely, but it appears on patches, which did not show banding before.

This observation supports what I refer to in my most recent reply to John's repeated insistences - where I said... "A calibration as such, will not always be repeatable/successful to the degree that it would reduce the issues to the levels you seem to expect." .

Canon undoubtedly have many engineers and specialists in their particular fields of sensor development and signal/image processing, and invest millions in their development - it is truly absurd for some people (not Gabor here) to be suggesting that Canon could easily fix these issues, and that they don't simply because they are complacent and don't care.

Elsewhere in the thread someone else wonders why "...Canon has not implemented the easy fix for these issues" - well, in all probability, the simple answer is that the issues are not so easily fixed at all - otherwise Canon would probably have already done so.

Post (hide subjects) Posted by
xxD
xxD
xxD
xxD
xxD
xxD
xxD
xxD
tko
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow