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DPChallenge Forums >> Hardware and Software >> 20D Banding
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10/21/2005 04:16:25 PM · #1
Is there a known solution to fix noise banding issues at ISO 3200?
10/21/2005 04:29:40 PM · #2
Originally posted by hsteg:

Is there a known solution to fix noise banding issues at ISO 3200?


Shoot in RAW and use Adobe ACR to convert. This pretty much eliminates the banding issues.
10/21/2005 04:31:54 PM · #3
Originally posted by mariomel:

Originally posted by hsteg:

Is there a known solution to fix noise banding issues at ISO 3200?


Shoot in RAW and use Adobe ACR to convert. This pretty much eliminates the banding issues.

Thanks, do you know if you contact canon about it if theyd have the power to do anything?
10/21/2005 04:42:37 PM · #4
Originally posted by hsteg:

Is there a known solution to fix noise banding issues at ISO 3200?


Can you post a sample?
10/21/2005 04:44:32 PM · #5
This has been an issue since the begining. As far as I know, they tried to address it in a firmware upgrade, but that only affected serious banding that occured when using the built-in flash. The banding that we see now, is 'normal' banding as a result of the way they achive ISO 3200. I heard that most cameras have this issue.

I used to just live with it, and only use 3200 when there was no other way. Now with the RAW/ACR method, the banding is virtually non-existant. Here's a photo I took yesterday night. ISO 3200, 20D, 70-200 f/4 L, f/4, 1/200s. This images was processed as discussed above, then run through NI to eliminate the noise, but in reality, the noise was acceptable for ISO 3200.



More images can be seen here. These have not been run through NI.

//mariomelillo.com/gallery/davemadison
//mariomelillo.com/gallery/bobwalsh


10/21/2005 05:10:50 PM · #6
Originally posted by doctornick:

Originally posted by hsteg:

Is there a known solution to fix noise banding issues at ISO 3200?


Can you post a sample?


Shot in JPEG. ISO 3200 100% crop
Same shot RAW processed using ACR to convert to JPEG. Colour was also corrected using WB adjustment in RAW.

As you can see, the noise is still there, but the banding is not.

Needless to say, after I discovered this, I never shoot JPEG only anymore, especially at ISO 3200.
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