Hi, I’m new to PhotoLab so apologies if if this is user error. I have version 3.1.0, camera is an EOS R. I use Photolab for basic adjustments before exporting 16bit Tiff to Photoshop in AdobeRGB. When using Auto Vignetting with the Optics Module I’m getting banding in flatish grey skies (the only …

Thank you! I’ve sent the data to the ImageProcessing team. Regards, Svetlana G.

Hi - just wondering if anyone else has coem across an issue with banding, particularly when processing jpeg files?

No matter what the software, an 8bit file can produce banding because there are simply not enough levels of tonality to represent smooth transitions. A 16bit file can represent 65,536 levels but an 8bit file can only represent 256.

BTW - it also looks like the op was getting this using RAW files…

Thanks. This is really bad banding, though. Results in unusable images.I can’t repeat this in any other processing software. If there was a problem with my jpegs, that would show up at least a little bit elsewhere. It absolutely does not. LR, Photoshop, Gimp, Exposure, ON1, Rawtherapee tried so far. …

I use Photolab as my main RAW converter and I’m happy with it. But recently I’ve started with astrophotography and noticed that Photolab isn’t working properly. The raw conversion is causing weird concentric circles in the astro photo’s. Post processing astro photo’s is difficult because of the lac…

Good day @LexB , Could you, please, provide us with this RAW file (and a sidecar if available) for the investigation? Please, upload it on upload.dxo.com with your forum name in ‘support ticket number’ field and let me know when ready? Thank you Regards, Svetlana G.

Hello Svetlana, I’ve uploaded the RAW file and the sidecar. Also the TIF file generated by Photolab and the processing of this TIF file in Affinity Photo using levels and curves for stretching the histogram. Kind regards, Lex

Good morning Lex, I’ve got them, thank you. We will investigate the issue. Regards, Svetlana G.

Vignetting filter causing banding

DxO PhotoLab Windows topics

platypus (Canon & Mac) May 5, 2020, 7:44am 23

Can you make available one of the images having the issue?

Banding in skies

Block pattern / banding caused by distortion correction

Radial pattern in fuji raw files with clearview at long exposures