I'm pretty sure that's one of the reasons why Nikon started making its own lighting modifiers(Diffuser, filters), especially the diffuser for the SB-800. That way they could test the system with the modifiers in place.
If I'm doing anything more complicated than bounce umbrellas, I shoot in manual. Way more predictable. Bruce Dayton wrote: > Light modifiers are bounce cards, diffusers, umbrellas, light spheres, > etc. Where I could imagine the problem is that the pre-flash systems > only send out a very small pop to determine exposure. The situation > becomes somewhat like when you try to meter past the capability of the > meter - like old stop down - so the pre-flash is small and the light > modifier cuts 3 stops of light and the little pop didn't put out 3 > stops to begin with. Now the reading would be incorrect and the main > flash pop would be too strong. Not saying it would always happen, but > I could imagine problems with some kinds of modifiers - especially the > stronger diffusers. > > In some situations, taking a shot and then looking at the histogram > would work well. In wedding photography, that would mostly not work - > you can't afford a test shot most of the time. > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
