all the tricolors are about a filter factor of 3 stops--check the old kodak publications for super xx for a starter on what is involved--that film was used for tricolor separations---they now recommend tmx as the best alternative for current films available
I've done it--and it works great...results are AWESOME--of course you must scan an put it together in the computer or get 3 slide projectors...I haven't done that yet but maybe some day....
anyways--use roll film--it's easiest to line up in a scanner, since the one axis is always lined up along the film strip direction, then you only need register in the other direction--sheet film, you must register in 2 directions and rotation too--much more difficult BUT the photoshop programs have this auto allign feature for stitching together photos and that makes it easy now.
it looks so kool when you do it
OH...another problem with sheet film is that registration is even more tricky (for larger sheets) when film sags differently between exposures---so that will mess things up too--you'll need one of them pressure film holders or a vacuum camera back for perfection---but, again, the photoshop software should take care to stretch and shring and rotate where it is necessary to make it eye-pleasing
Last edited by johnielvis; 04-12-2012 at 08:36 AM. Click to view previous post history.