I've been off-list for, ooh, four years or so; after two house moves,
I finally got around to unpacking all my various darkroom stuff and
testing it out again.
It turns out, to my pleased surprise, to all work fairly well. The
safelight bulb is dead, but a red LED rear bike light works as a
replacement; the chemicals are all enormously past their expiry dates
(and have been thoroughly frozen through a number of winters of garage
storage), but still can make prints and develop film well enough for my
admittedly fairly nonexacting standards.
However, one question arose while testing this lot. I had a film
loader full of a large amount of film, but I couldn't remember what sort
of film it was. I filled a cartridge and shot it at ISO 100 as a
reasonable starting point; developed it in elderly Rodinal for 6 minutes
at 1+25 (as if it were hp5+), and the resulting negatives appear to have
come out okay.
The weird thing is that now I've developed it, it turns out that the
film _is_ HP5+ -- which is ISO 400. So I overexposed everything by two
stops, but the negatives are not obviously overexposed at all.
What are the chances that the excessive age of my chemicals (and film)
have conspired to counteract the overexposure? I have a combination of
exposure + development that seems to work, but I'm not sure why..
thanks,
-- dan
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