I hted collecting some filters for my 12-24mm and my 10.5. The 10.5 is easy as it only has the gel holder in the rear of the lens. The 12-24 is a little more complicated in that it has threads for the filters.
You suggest not using the tiffen cc30m because of its sandwich design. Can you suggest another manufacturer as they seem to be the only one that I can find on the web?
Also, do you stack the filter with a warming filter (FL-D etc)? Does this creat a problem with vingetting? Flare?....
I ordered the Green filters for my strobes about two months ago and have yet to recieve them and there is no end in sight. would you recommend still using the magenta and warming filters without the green filters on the strobes? would you recommend not using the strobes at all,with the magenta filter in place, until the green filters arrive?
The quality of the photos that you have posted are awe insipiring and I hope that you someday consider writing a book on the subject...