Hi, I have been using Duotone with my photos, but since the other day, everytime that I process a photo this way, when I convert then back to RGB mode, the dark (black) areas of the photo become a kind of bitmap of red pixels. I have tried with many different photos from RAW or JPEG files and I get the same result with all of them. This is an example of the issue. The original is on the left.
What may cause this? The photo looks good in duo tone. It is when converting to RGB when the corruption happens.
Not following you: why are you converting from Duotone back to RGB?
You need to do so in order to save the photo in JPEG format. You can not do it directly from duotone.
I would say that what happens is very simmilar to what you get with the "posterize" command