And someone on these forums said a DSLR was a useless piece of kit… Ok just kidding, but seriously I think that the potential DSLRs have for analysis of the laser is still under explored. I would be interested to see a mid ground of this with my laser spot technique. Basically just use ISO 100, and a 15 second exposure, and print one layer like you did but progressively change the the f-stop in full stops. This would result in a flare maps at different intensities, which could show more clearly the cumulative effect of the flare relative to the desired print for a given geometry. It could be pretty neat stuff.