I believe I read somewhere that using polarizers can cause colors when shooting crystals. I don't know if the polarizers go on the light sources, on the camera, or both.
Rob Studdert wrote:
On 24 Feb 2004 at 17:10, Mark Cassino wrote:
What I can't figure out is how these folks get the mixed lighting - the two
colors - in their shots. I did tons of experiments using dual colored flashes
(I usually use two flashes, one blue, one white) but I could not get the nice
"liquid colors" that Rasmussen gets. I gotta keep experimenting
I'd suggest playing about with a set of coloured high intensity LEDs before next season. If you could mount them on flexible arms you'd have a very controllable set of cold coloured illumination sources.
I'm looking at setting up some 1W white LEDs for macro illumination.

