Hi again.... Fomaspeed V312 and Foma filter question

[hoganlia]

second post today.... I don't know if there is a limit.

I have bought some 5x7 and 8x10 Fomaspeed Variant 312 which was difficult to come by for a while. I had a shoot where I think a matte finish would be nice... it was not to be. Now I can at least experiment.

I have never printed matte before and after reading a few of the comments here on Fomaspeed 312 (there are not many) I decided to buy Foma Filters as well as a member mentioned they slow the exposure times a little. The filters are different from Ilford both in colour and the combination approach which I have not heard of before.

The combinationes and in the three groups Y, yellow, M1, light magenta, and M2, deep magenta. The instruction sheet is a little unclear when it deals with mixing. I understand if the combinations refer to using either one or both of the filers in each group. Am I right in thinking that combining two filters from different goups is not possible.

Looking forward to your wisdom

thanks

Joe

 

[Don_ih]

I don't know if there is a limit.

No. Ask away,

It suggests to not bother combining different kinds of filters. The M1 filter combined with the M2 would likely be the same as M2 on its own with a slight need to extend exposure. You can see what combining them would do - or combining a Y and an M (1 or 2). Y and M will somewhat "cancel" each other out.

It's pretty similar to how a colour head changes contrast. You tend to not have the Y dial above zero if you want higher contrast and you tend to not have the M dial above zero if you want lower contrast.

 

[FotoD]

I suppose you could combine M1 and M2 and get a contrast grade between 2xM1 and M2. But it would be a relatively small change of contrast, so probably not very useful.

This is from Fomas datasheet.

And here is the same chart for Ilfords filters.