Lightroom: Vertical banding recoveries of shadows canon raw files

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Hi I would like to ask the support of Adobe Lightroom if it is possible for them to develop some method to eliminate the banding typical of repeated recoveries of species in the shadows osviluppo canon raw file ... are a photographer canon and unfortunately the sensors canon even if they have a good dynamic range suffer from the banding enclose an example of a limit case one step carried out with the new 5dmk3 very underexposed, and then a strong recovery ... http://www.dsign-agency.com/banding.jpg
hours Lightroom is an exceptional program I'm using version 4.1 that supports only the rc files mk3 and 5D only way I found to reduce this problem of vertical banding (in particular at low iso file .. in those at high iso the problem occurs because of less grain and more else is not so sharp you can see the bands, is to be applied with brushes reducing moire and add a bit of grit from the panel effects ... now I wonder if you can not finding a particular way of reducing this type of problem that you can include in future versions of Lightroom .. because it is a problem that all users would be able to solve by software canon (canon since the sensors currently suffer) i hope adobe can work to find a solution to this problem, thanks for the 'attention and I apologize but I do not speak English use a translator.
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jakdaniel jakdaniel

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Posted 7 years ago

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jakdaniel jakdaniel

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Simon_E7D

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Hello!

It would be really great to get a debanding function direct in Lightroom to avoid longer workflow with additional plugins. The EOS 7D has strong banding with pushed shadows. Heard that comes from the dual processor architecture. Other Canon 18MP models are not that strong concerned (single processor).

Thank you in advance Adobe Team!

Simon
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Jon Rista

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Lightroom desperately needs some debanding features added to it's existing noise removal arsenal. LR4 does a pretty good job at removing random photon shot noise, however in the case of many Canon cameras, this is woefully insufficient as banding and fixed pattern noise are much greater offenders.

My hope would really be that Canon fixes their sensor readout to eliminate noise using some kind of digital CDS like Sony Exmor sensors do. That would improve dynamic range as well as eliminate banding and other forms of noise caused by analog readout, and insufficiently suppressed with analog noise suppression. However Canon has not shown much of an inclination to improve their sensor designs and join the modern age...so us Canon users have to resort to computer software.

I currently use Topaz DeNoise 5 to handle my debanding needs right now. It does a pretty good job, and can produce some fairly clean results and recover a lot of lost dynamic range from the majority of RAW images from a wide range of Canon DSLRs. The results are not ideal, however, and generally must be done on a TIFF image...denoising/debanding RAW with Topaz is not a particularly great experience, and one way or another you end up with a TIFF in the end anyway. It would be really great if Adobe would add tweakable debanding for both vertical and horizontal banding noise.

Canon dynamic range, in the absence of banding, is actually quite good, much better than the 11 to 12 stops normally indicated by DXO. We may not be able to eek out quite as much as one can get from a camera with a Sony Exmor sensor, but with Topaz it seems possible to extract maybe a stop or so of dynamic range that is normally obscured or made unusable by unsightly vertical stripes.