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Author Topic: Severe banding in Lightroom 4 (Mac)  (Read 1483 times)
kdern
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« on: September 22, 2013, 07:55:57 PM »
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I am seeing severe banding in dark sky areas when viewing and editing photos in Lightroom 4 on my Macbook Air. It's always visible in the library module, and usually in the develop module as well. Not always. It appears when I export sometimes, not always.

Any ideas on how to fix this?

« Last Edit: September 22, 2013, 09:28:39 PM by kdern » Logged
Glenn NK
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« Reply #1 on: September 23, 2013, 12:50:28 AM »
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My guess is that it's posterization; at least it sure looks like it.

http://www.ronbigelow.com/articles/posterization/posterization.htm

http://photonaturalist.net/3-ways-to-prevent-posterization/

http://www.cambridgeincolour.com/tutorials/posterization.htm

Glenn

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mac_paolo
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« Reply #2 on: September 23, 2013, 06:06:18 AM »
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Develop should present the shot in it's full glory, so posterization in Develop module could mean a severely compressed image or issue with the display profile.
Library previews are compressed JPGs, so if you set a lower quality for previews you may encounter posterization effects.
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digitaldog
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« Reply #3 on: September 23, 2013, 09:07:32 AM »
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The question is, is this banding a result of the display or in the document? I suspect the later if you're dealing with raw data. That's an issue with poor(er) quality display systems that don't produce anything close to 8-bits per color let alone more than that. Always examine this in Develop at 1:1 or greater too. You can't properly evaluate this kind of data quality in the other modules, they use a different preview quality and architecture.
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Andrew Rodney
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JRSmit
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« Reply #4 on: September 23, 2013, 10:20:50 AM »
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The few times i experienced such banding in LR was always the display the cause. In one case when also having the option to display the image on an iPad coming from a macbook (Airdisplay or something like that), in another case due to a bad display profile.
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