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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 12 Jan 2015 (Monday) 16:00
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Fighting banding

 
rapurimanka
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Post edited over 4 years ago by rapurimanka.
     
Jan 12, 2015 16:00 |  #1

Hello, i'm here with VERY weird problem, but still. Trying to push maximum i can from my 6d, like it can be done on nikon (http://www.dpreview.co​m/reviews/nikon-d750/13 (external link))

So i took a test photo with -5ev and then pushed it via ACR +5 exposure. I have noise, but that's not the problem. The problem is bluish in shadows and banding. Any easy way to get rid of them? Make shadows black (not blue) and banding disappear?

I used TOPAZ DENOISE (http://www.topazlabs.c​om/denoise (external link)) for banding, and its good. But shadows are still bluish.

Original RAW file: https://dl.dropboxuser​content.com/u/5020311/​-5.CR2 (external link)
For WB - Tungsten light was used

p.s. fyi -3ev can be pushed back without big noise. -4 little big harder cause some little banding exist, but still possible. Only -5 and more is a problem.


6D | Canon 85 1.8 | Canon 24-105 4 | Lightroom 4
https://www.flickr.com​/photos/27393138@N08/ (external link)

  
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maverick75
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Jan 12, 2015 16:06 |  #2

Don't underexpose.


- Alex Corona Sony A7, Canon 7DM2/EOS M, Mamiya 645/67
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gonzogolf
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Jan 12, 2015 16:13 |  #3

It sounds as if you want to shoot 5 stops under you should rush out and buy a nikon. I guess I dont understand the need to massively underexpose on purpose.




  
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elitejp
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Jan 12, 2015 16:45 |  #4

you probably cant do what your trying to do with the 6d.


6D; canon 85mm 1.8, Tamron 24-70mm VC, Canon 135L Canon 70-200L is ii

  
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sploo
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Jan 12, 2015 17:17 |  #5

gonzogolf wrote in post #17379363 (external link)
It sounds as if you want to shoot 5 stops under you should rush out and buy a nikon. I guess I dont understand the need to massively underexpose on purpose.

I'm assuming the OP is testing how hard he can push the darker sections of an image (i.e. raising really dark shadow areas when you're faced with a scene with very high dynamic range).

To OP: the short answer is that you might be able to do some processing, but you've hit the thing Canon sensors don't do well (though I understand the 6D is about the best of the bunch - of the Canon DSLRs - for this application). The unhelpful answer is to hope that Canon either start buying sensors from Sony, or fix their long standing issues.

Otherwise, you'd have to bracket and blend multiple exposures (at minimum, one taken for the highlights, and one taken for the shadows). Though perhaps Magic Lantern's Dual ISO feature might work on the 6D (I haven't checked).


Camera, some lenses, too little time, too little talent

  
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rapurimanka
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Jan 14, 2015 03:00 |  #6

Ye, looks like dual-iso is a good way to solve this issue. Thx.

But canon should work on this stuff :(


6D | Canon 85 1.8 | Canon 24-105 4 | Lightroom 4
https://www.flickr.com​/photos/27393138@N08/ (external link)

  
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tzalman
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Jan 14, 2015 03:44 |  #7

But canon should work on this stuff :(

Hope springs eternal.....


Elie / אלי

  
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rapurimanka
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Jan 14, 2015 07:45 |  #8

Final question, canon didn't announce any DSLR's on CES 2015, what's the next exhibition where they can announce anything?


6D | Canon 85 1.8 | Canon 24-105 4 | Lightroom 4
https://www.flickr.com​/photos/27393138@N08/ (external link)

  
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Fighting banding
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