D@n said:
...I tried white balancing on yellow and with the blue gels, it came out almost grey. "Nice miserable feeling"
Hmmm. I can't tell from this post if you want to replicate moonlight, or if you are going for something else. But you can cherry pick from my thoughts.
• First of all, moonlight is NOT soft light, in fact, it's quite harsh. The only time that it would be soft is when there was an overcast. Moonlight is after all, only reflected sunlight and like sunlight, or any light come to that, it's the size of the source that determines hard or soft. If I was shooting in the woods at night, I would put my largest fixtures at a distance behind some trees, and I would use at least full CTB gels, and maybe add 1/4 or 1/2 CTB on top of that. I won't look like moonlight, but it will give the
impression of moonlight, which is really what you're after. So, ditch the bed sheet, and go big open face or fresnels.
• Secondly, you should do your white balance in white light, for the CTB to have the desired effect. I suppose you could white balance on a CTO gel over a white card and not use CTBs at all, but that is a bit trickier and you may end up with varying results shot by shot.
• I have no idea why you would consider white balancing with blue gels, since that would take you in the direction of late-afternoon sunlight.