[LewisM]

Is ran a serioies of flats last night for my latest image. I use one of Peter's lightboxes, and I was experimenting to get around 16000-20000 peak in the histogram (my STF-8300C seems to prefer a max value of no more than 17000).

I experimented by adjusting the rheostat to give a dimmer or brighter white light, and with longer and shorter subs respectively - enough to get the target values.

Is there any science behind duller/longer vs shorter/brighter being better or worse, given the same final value?

Or just so long as the correct value is reached it does matter which way you get there?