G'day everyone,

I just created a little problem for myself and thought I'd try to pick
the multiple brains assembled here with their overall centuries of
experience with B&W processing...

Recently I bought on eBay some Efke IR 820c in order to play with
shooting infrared with the MCC's large format camera. Only after
buying the film did I do some research on it and found some
interesting information, in particular here on flickr
<http://www.flickr.com/photos/schafphoto/734801338/in/set-72157600359884\
089/> .

So shooting through an R72 or similar (#89B, B92, etc) and metering
without the
filter for 1 ASA seems the go. And that's what I did with my first
sheet. With the second one I metered just the same, but then, ahem,
forgot to actually put the filter in front of the lens for the
exposure. Which means that I have just exposed a film that seems to be
rated
around 100-200 ASA for visible light, for 1 ASA, effectively
over-exposing it by about 7-7.5 stops.

Not that it is an important shot, I believe, but just out of interest
and maybe spite I'd like to try if I can still get a printable neg
from it. Which means heavy pull-processing. The giant dev-chart
has no data on pulling and only generic numbers for push processing
<http://www.digitaltruth.com/chart/pushproc.html> , and
also of course not for 7 stops.


What I currently have is Microphen, plus access to Rodinal, and I
could get ID-11/D76 if that would help. The good thing about Microphen
is that it's compensating, so if I reversed the digitaltruth advice
for pushing then the factors to shorten the development time by would
be smaller. Still, the time would end up to be less than a minute,
which doesn't seem feasible.

Alternatively I thought about using Rodinal in really high dilution
(like 1+200 or more) in order to get feasible development times. I
have no experience whatsoever with Rodinal, though, and thus no idea
how to determine what sort of dilution and time to try. The standard
processing is given as 9 minutes at 1+25.

Have you ever attempted such a thing, or/and would you be willing to
offer advice? I'm probably (hopefully) not going to repeat this, so
it's a one-off and if it's just in the right ball-park that'd be ok.

Or if you think it's just a plain foolish idea to even try and I
should rather just dump the sheet, that's fine, too. I just thought it
might be instructive to try and see what comes out of it.

Thanks in advance for any input.

Best Regards,

Ronald


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