Archive 2011 · 1d2n high-iso banding

Daigen-za
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p.2 #1 · 1d2n high-iso banding

RobertLynn wrote:
...and for the 5D they didn't do anything. They just posted a thing saying that at high ISO, you may exeperience interference with the lens/camera/ai-servo or something like that. May not even have been Canon that posted it. I wish someone would chime in about it that had the link.

Here's where I first read of it (at dpreview.com)

section "AI Servo interference banding"
http://www.dpreview.com/reviews/canoneos5d/page25.asp

Dec 26, 2011 at 08:21 PM

trumpet_guy
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p.2 #2 · 1d2n high-iso banding

I have no experience with this camera body, but here are some relevant threads:

https://www.fredmiranda.com/forum/topic/851294/
https://www.fredmiranda.com/forum/topic/495207/

Not a banding issue here, but another 1DII2n issue worth knowing about:
https://www.fredmiranda.com/forum/topic/597080/

Dec 27, 2011 at 02:02 AM

trumpet_guy
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p.2 #3 · 1d2n high-iso banding

From the first link:
=================

Al Goldis wrote:
That is a known problem with some cameras from the last batch of Mark IINs Canon made (the highest serial numbers). It only appears at ISO 640 and higher, is progressively worse the higher the ISO, and usually appears only on the 1st frame of a sequence (the 2nd frame occasionally shows less pronounced banding).

Canon would of course fix it for free under warranty but I don't really know how much it will cost now that the camera has been out of production for years.

Zander Alberts wrote:
Hmm, just updated the firmware again and it seems to have solved the issue... very odd.

Dec 27, 2011 at 02:04 AM

rongoe
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p.2 #4 · 1d2n high-iso banding

Thanks for all the info. I'll check my serial number and see if its a late batch, though I don't think this is the issue because I can produce banding at iso 400 when underexposing.

Dec 27, 2011 at 08:57 AM

rongoe
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p.2 #5 · 1d2n high-iso banding

I had my 50 1.4 fixed at United Camera (local) and so I took my 1d2n to see what they thought. Well, they ended up sending it Canon and today, after 2 weeks, they gaveI me a quote of "sensor clean and adjust focus" for $239 (or was it $269, don't remember). At any rate, I don't see how either of those efforts are going to address the banding issue.

I'm inclined to just get it back and send it in on my own to Canon, with a disk of bad images showing the banding.

Jan 26, 2012 at 08:37 PM

GeneO
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p.2 #6 · 1d2n high-iso banding

I would send it to Canon directly. Like you said, a clean and focus adjustment won;t resolve this issue,

Jan 26, 2012 at 09:35 PM

twoshadows
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p.2 #7 · 1d2n high-iso banding

I bought a late batch 1D2n brand new back in the day and sent it back for a new one because of the same problem. Tech said it was a bad sensor. Sorry to hear of your problem.

Good luck with it...

Jan 26, 2012 at 10:47 PM

onegreatcity
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p.2 #8 · 1d2n high-iso banding

To the OP, sorry you're having these issues. Recently I almost bought a 1DMK2n but my test shots at high ISO showed identical results. Though the seller was unable to replicate it in his testing and some suggested it was my memory card to blame, I opted not to purchase. Good luck sussing things out.
-Cam

Jan 26, 2012 at 11:24 PM

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