Luminous Landscape Forum

Raw & Post Processing, Printing => Digital Image Processing => Topic started by: maxs on May 10, 2017, 09:15:25 pm

Title: Banding issue when using presets
Post by: maxs on May 10, 2017, 09:15:25 pm

Export from Phocus as JPEG
Import into Lightroom to apply preset(s)
Import into PS to apply noise

Still see some banding in some of the pics

Any workarounds?

Thanks in advance.

Title: Re: Banding issue when using presets
Post by: BobShaw on May 10, 2017, 11:16:20 pm

Absolutely. Why would you export from Phocus as a JPEG? Export a TIFF and work in 16 bit and you will probably have no trouble with banding.

Title: Re: Banding issue when using presets
Post by: maxs on May 10, 2017, 11:50:36 pm

Good point...I don't really have a reason of why not export as a TIFF. Let me give it a try
:-)

Title: Re: Banding issue when using presets
Post by: Guillermo Luijk on May 11, 2017, 03:04:27 pm

JPEG is 8 bits, it doesn't resist heavy procesing since value rounding can end in posterization. It's important that you understand the 'whys' of this story because the same conceptual mistake can arise at some other point in your workflow.

Regards!

Title: Re: Banding issue when using presets
Post by: Pictus on May 11, 2017, 04:14:38 pm

Also do not remove ALL the luminosity noise  or will end with banding/posterization
in smooth areas without texture, this is specially true for JPGs.