I use FCP Studio 3 and Adobe Photoshop CS4.
When I export a single frame or multiple frames to Photoshop, and I make a selection for the clone tool, (option/click,) it may accurately reproduce that selected tone/color for a couple of clicks, (or holding it down and "painting," then it goes haywire. If I've selected a portion of a frame (well within the borders of a changed tone,) for example, a 70% grey area, it might or might not reproduce that selection, and then it will suddenly start producing a dark black tone. I repeat: there is no way that I'm overlapping the selection onto a dark area. There is no explanation from Adobe's troubleshooting. Why does this do this?
This glitchy stuff happens when I'm exporting from FCP, and also when I'm doing a still photo.
Also, when I import the corrected frame or multi-frames back into FCP, all the color correction and contrast correction is lost, and you can't do a "remove attributes" and then copy the color correction from the previous frames. The Photoshopped frames just turn orange.