Quote:
Originally Posted by Trevor Crone
Just ordered a sheet of white opal perspex, A4 x 3mm thick on Ebay, just under £3 including postage. Will either hold it under the lens with the negative in place or attach a piece to the enlargers swing filter post. Thanks guys for all the suggestions.
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I have found that flashing with the negative in place is not always as successful as flashing with white light. I put this down to the fact that no matter how thick the diffuser I am still trying to flash with a defused image which varies the light intensity in proportion to the negative density.
The effect can best be seen when exposing pen lines. If they are exposed though a diffuser with the negative in place, one gets a graduation of tone (which may range to black) instead of a pure even black that is obtained using a pure white light.