Filter on Sinar shutter and for 3 color separation negatives

[jumanji]

My two concerns:

Is there any filters system that fits on Sinar shutter other than the Sinar Color control filters? What's the bad thing about Sinar filters? Because I see them end cheaply.

I will try to do 3 color separation negatives. What filters do I need? This will relate to the concern above...

Thank you!

[Mark Woods]

For three color separations, you'll need primary red, green, and blue. I'm sure there are calibrated filters used in lithography that you might find. There's a Russian photographer who shot this way in the 1920's I believe. Pretty amazing work. A real look back in time in color.

[AtlantaTerry]

My two concerns:

Is there any filters system that fits on Sinar shutter other than the Sinar Color control filters? What's the bad thing about Sinar filters? Because I see them end cheaply.

I will try to do 3 color separation negatives. What filters do I need? This will relate to the concern above...

Thank you!

Google: Harris Shutter

This will give you more than enough information on the filters you need.

[Drew Wiley]

Look for the Sinar Epolux shutter system. It was a prematurely early entry into successive tricolor digital photography that included a rotating RGB color
wheel. Ideal for what you need. If you can find one at all, it will probably be free. But if you need to look for just filters, you'll need 29 red, 58 green, and 47B blue.
Balancing you film to the same density and gamma afterwards will be pretty tricky. The best film made right now for color separations in TMax100, but with a tad
more difficulty it can be done with TMax400 or FP4. Because the blue exposure will be relatively slow, one trick is to use TMX100 for the red and green exposures,
but the faster TMY400 for the blue.

[doublezero]

hello ,

have a look here : http://trichromie.free.fr/trichromie/

[jumanji]

Thanks all for great info.
Yes the early Russian work and Keith Taylor's current work inspire me to do this. I will try 3 color gum bichromate, with 3 sheets 8x10, of course not digital negative.
Somtimes I see the Epolux shutter on Ebay and yes they end inexpensive, but I think I will stick with Sinar Auto shutter. Too many accessories for the Epolux.
I will research the Harrison shutter and the French site later. doublezero, what's the process did he use?

[AtlantaTerry]

Harris shutter

[jumanji]

Oh my bad. I was obsessed by C.C Harrison lens .

[jnantz]

hi jumanji

i can't comment on the filters you use but
a tricolor filter se is usually 25 Red, 58 Green,
and 47 Blue.

for a while i tried to get lighting gels that would be comparable
to the glass filters but i didn't have the time/energy to follow through ..

this thread might be some help ( and you don't have to translate from french )
http://www.largeformatphotography.in...ne-Shot-Camera

have fun !
john

[jumanji]

Great info. Thanks John.