dsymes
03-16-2010, 19:40
Hi Tom,
This may or may not be up your alley, but you seem the kind of practical person who would know how to approach this kind of question.
I have the guts of a thomas socium safelight that I used for many years as an architectural photographer. I changed careers ten years ago and canibalized it to use for interference testing of optical flats or other matched optical surfaces (I grind telescope optics as a hobby).
I'm setting up a darkroom for the firsst time in ten years, and will put a large (16x16) safe-light box about 4 feet above my multi-purpose bench that will serve for both telescope making and photo printing. The box will have the thomas bulb inside, and will have white plex on the top and bottom - when printing, a baffel insert will cut off light from going throrugh the bottom plex, and when using for optical testing, will cut off the top plex.
When I bought the safelight new from Adolph Gasser in San Francisco, it had in internal OC type filter for VC printing, and an external color printing filter. What I need is a relatively cheap lighting-type acetate filter (Lee?) that will provide appropriate cut-off for VC printing. Any thoughts?
Thanks,
Douglas
Portland
This may or may not be up your alley, but you seem the kind of practical person who would know how to approach this kind of question.
I have the guts of a thomas socium safelight that I used for many years as an architectural photographer. I changed careers ten years ago and canibalized it to use for interference testing of optical flats or other matched optical surfaces (I grind telescope optics as a hobby).
I'm setting up a darkroom for the firsst time in ten years, and will put a large (16x16) safe-light box about 4 feet above my multi-purpose bench that will serve for both telescope making and photo printing. The box will have the thomas bulb inside, and will have white plex on the top and bottom - when printing, a baffel insert will cut off light from going throrugh the bottom plex, and when using for optical testing, will cut off the top plex.
When I bought the safelight new from Adolph Gasser in San Francisco, it had in internal OC type filter for VC printing, and an external color printing filter. What I need is a relatively cheap lighting-type acetate filter (Lee?) that will provide appropriate cut-off for VC printing. Any thoughts?
Thanks,
Douglas
Portland