All my work is done in a *very* simple, traditional darkroom -
One enlarger, four trays, and a collection of hand tools made from things you can buy at any art supply, or hardware store. Though I work digitally (making web graphics), nothing in either the assignment or art portfolio has been made by a computer.
I print only two or three 'original' copies of an image, overwhelmingly on 16x20, in black and white.
All color is by hand, a combination of watercolor, and Marshall oils. If you are an assignment client, that's your repro material.
( Everyone who has ever gotten it, has been 'tickled pink'.)
Art portfolio prints are made from 4x5 copy negatives of the 'master/originals'. There are 'second' master prints available, but not of every image.
I've been doing this work since the early '80's, and I've written quite a few artists' statements about the art portfolio work. The more time goes by, the less aedequate words seem to be, and the less interested I am in trying to talk about the pictures at all.
( If words could 'do it' ... I'd be a writer ... but you've noticed, I am not one....)
I think it was Robert Rauschenberg (correct me, someone/anyone, if my attribution is wrong) who said it best - " It starts by YOU telling the picture what it will be -- in the ...