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IPad unable to Develop to RGB/32

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today i tried to open a CR2 Raw image and develop to RGB/32, after setting the Develop Assistant to do so.

Photo always creates RGB/16 images.

Tested on 2 iPads, with both Apple and Serif RAW Engine. 

Photo 1.10.5

IPad pro 2018

iPad 2017




Mac mini M1 A2348

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.


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  • 1 year later...
  • Staff

The issue "Unable to develop RAW to 32bit - assistance preference ignored" (REF: AFP-5108) has been fixed by the developers in build "2.2.0 Release".

This fix is in the current customer release.
If you still experience this problem once you are using that build version (or later) please reply to this thread including @Serif Info Bot to notify us

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