The curves question is because I've been taking some underwater shots (only in the pool). The suggested way of fixing them in LR is to use HSL or a preset that effectively adds an aqua filter. This doesn't work too well, however, because the problem with underwater shots is that the red wavelengths diminish rapidly with depth and so the reds need selective boosting. The best way to do this is using the red colour channel curves (also an easily accessible feature in Bibble).
DXO took about 2 seconds to restore the reds on the whole batch
I keep on trying LR, but even though each iteration is better than the last, and I find that although it is a very good DAM, as a RAW editor it just doesn't cut the mustard. Too difficult to use (weird UI) and some of the features are just useless - auto masking for example, which always leaves a clearly defined boundary. And 'auto tone' is truly wretched. They should remove that.
Thanks, as always, Alan, for your help and guidance.