Preflashing Harman direct positive paper revealed

This visual presentation illustrates what preflashing can do for you… it’s meant to be a helpful tip for those interested in the Ilford/Harman direct positive fb paper…

Unfortunately, I can’t provide you with a specific exposure time for preflashing your papers, because there are too many variables involved, so you’ll need to do your own testing to get there… what you’re looking for is the minimum exposure time which produces the first visible tone above D-max…

Once you find that exposure time, by pre-exposing your paper to it you’ll gain more than two full stops of tonality—as you can see in the pictures below… each step of the scale represents one third of a stop…

It’s interesting to note that the lighter tones in the highlights remain unchanged… the preflashing provides better separation in the middle tones and even more so in the shadows…

So, here it goes…

First, without preflashing:

Preflashing Harman direct positive paper 01

And now with:

Preflashing Harman direct positive paper 02

Enjoy…

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