What do the the different colours in the highlight warning mean?
The colors shown by the highlight warning indicate which channels hit the highlight or shadow thresholds. Jeff put together a post with some hints for using the highlight recovery tool for Bibble 4 and most of the steps still apply for Bibble 5. In some situations, you won’t be able to completely eliminate the warnings – that’s ok there should be some pixels that go all the way up to 255 for images with typical contrast, or you’re not using the full dynamic range.
