I have done very little work with studio lights, but tonight I gave it a crack at a local studio. It was a fun and learning experience. Our steampunk model Katy was doing some active poses, so I had the drive on 10 f/s. For each sequence, the first shot was a lot more exposed than the rest of sequence. Checking the histograms, the first shot would register right across, but the later shots would not extend past half way. The lights seemed like they were being triggered and they are supposed to be able handle better than 10 f/s. Earlier in the session I was getting short sequences (up to six frames) of black frames in the middle of extended sequences, but seemed to be as a result of asking too much of the processor - when I swapped to jpeg only I had no more of that problem. Unfortunately I can't show any examples yet. The images are all SFW, but the model agreement means that I can't publish until the model has seen them. I know this is pretty sketchy question, but any ideas what is happening?