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Re: [OM] 5D II pattern noise problem

Subject: Re: [OM] 5D II pattern noise problem
From: Moose <olymoose@xxxxxxxxx>
Date: Mon, 30 Nov 2009 21:17:34 -0800
C.H.Ling wrote:
> When you shot RAW and push the exposure to near 1 stop you will see it. Here 
> is an example:
>
> http://www.accura.com.hk/temp/IMG_7622.CR2 (8MB)
>   

I can understand your frustration.

I appreciate all the effort you have gone to to give me more reasons to 
put off any rash purchase to replace my 5D. ;-)

Still, it doesn't seem insurmountable. NeatImage does quite a nice job 
of eliminating the banding noise. 
<http://www.moosemystic.net/Gallery/Others/CHLing/PatternNoiseNI.htm>

I think that without the roll-over to compare, no one would notice the 
very subtle pattern left in the darkest areas at step one. A second 
application really cleans it up, if necessary.

With this image, there isn't a noticeable effect, at least to me, on 
detail in the lighter areas. Where there is an effect, the NI layer may 
simply be masked to only affect the dark areas.

I think the noise gives a sense of detail in the darkest smoke, but I 
think it's false. Upon close inspection, it seems to me that the first 
step loses no actual subject detail at all, and the second step maybe a 
tiny bit.

A. Neat(Image) Moose
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