i am trying to use color gels to use as filters.
it probably doesn't make much sense ..
but i am looking for a 25 red, 58 green and 47 blue but in light gels instead
does anyone know if light gels (rosco ? ) comes the same way as lens filters do
or will i have to experiment a little to see if the filters i am trying to make on the cheep
will be the same ... or will the light shop i go to know exactly what i need ...?
why am i doing this ?
i have some lenses that have a huge front element that i want to make color separation negatives with
but unfortunately it is expensive or nearly impossible for me to get a set of color filters that are 3 or 4 inches across .. so
i am trying a work around.

any other suggestions would be appreciated too ..

john