Re: Duotone

[siep@elvenkind.com]

On  6 Dec, Hraban wrote:
> Taco Hoekwater wrote:
>> > > Well, I'm not sure this is the
>> > > right English word. With `duotone' I mean documents typeset in two
>> > I think you mean "duplex" or just spot color separation.
>> > I'm just working on a project with duplex photos, that is:
>> I thought the word was duotone for these images, and we just call it
>> two color printing here? Anyway, one of the easiest solutions for this
> 
> I'm not really sure. I don't have a media dictionary.
> I use(d) the words that are usual with Photoshop.
> 
> In German we say "Duoton(e)" only for black+grey (for better b+w photos),
> but "Duplex" (Triplex etc.) for other combinations.
> You can achieve an easy pseudo duplex effect (with QuarkXPress and
> perhaps other programs) if you define fore- and background colors for
> greyscale pictures.

I read in a book on Photoshop that duotones let you bring out more tonal
detail: you pick response curves for the different channels that
exaggerate contrast in different tonal ranges. In contrast, a fake
duotone will just lose you tonal detail. Which doesn't mean that you
should never use it, but you are trading decorative effect against
quality of rendering.

-- 
Siep Kroonenberg
siep@elvenkind.com