[Fondueset]

Thanks guys but this is a different sort of problem - it's in what should be a vaccum between the sandwiched lenses.
I've had the normal fogging problems - particularly when the air is 85f with high humidity and the water is 50f! The condensation has diminished but it's left what appears to be some sort of deposit between the lenses. The only thing I can think of is to try and take the lenses apart and clean between them - but that means breaking the integrity of the vaccum. I'll probably try it but I can't take the chance on a high profile shoot.

-Great idea roy - I may do that as a general rule. Spring and fall around here make for radical air/water temp diffs.

FYI - I think this may have resulted from the case sitting in hot sunlight.