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Thanks Marek,
Will stick with post-flash since you do it that way.
OTOH, thinking again post-flash and pre-flash could be well different, since
after exposure the emulsion becomes relatively more darkened under the thinnest
part of the negative, therefore post-flash will be even more
proportional; more in the highlights which were not darkened after the
negative exposure and less in shadows which were slightly darkened in the
negative exposure.
Ah, you do it when bleach development only... Thinking
on it makes things more clear; bleach development can be harsh
to highlights it not controlled well (I have ruined few layers by
overbleaching before), therefore by doing the flash exposure you are practically
building a safety shield. Not a coincidence that I thought post-flash could be
nice for use with layers that are going to be hand-manipulated
then.
Regards,
Loris.
Loris,
My print flash
(I use post exposure flash, and have no idea if pre-flash is the same) exposure
is typically 3-4 seconds under a typical bank ov UV lights. Negative exposure is
2 minutes, but could be as long as 3 minutes for negatives printed on
transparencies with almost no base density. Exposures are much longer for
pictorico based negatives.
When flashing the print I almast always use
chlorox bleach development, or it would take forever t
develop.
Marek
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