U of S | Mailing List Archive | alt-photo-process-l | Re: Exposure times in tricolor gum

Re: Exposure times in tricolor gum



OK, thank you very much...

Regards,
Loris.


18 Kasım 2008, Salı, 3:24 pm tarihinde, Henry Rattle yazmış:
> Yes, the Y curve is quite a lot closer to the 45 degree line - less
> sigmoid
> than the cyan and magenta curves, which are close to identical.
>
> Afraid I mix the pigment by eye - small blob, larger blob... So can't be
> of
> much help there.
>
> Best wishes
>
> Henry
>
>
> On 18/11/08 12:50, "Loris Medici" <mail@loris.medici.name> wrote:
>
>> Thanks Henry,
>>
>> By "...Y is much flatter..." you mean that it's closer to the ideal 45
>> degrees linear transfer function or it's more drastic? I'm currently
>> printing using a single curve devised from M tests.
>>
>> What can you say about the pigment concentrations you use?
>>
>> Regards,
>> Loris.