[LargeFormat] Help with interpretating film speed test

[LauvoneT]

HI,

I have just run a test on Ilford FP4+ developed in
Perceptol 1:3 for 14.5 minutes at 75 degrees.  The
agitation was constant shuffling in the tray, two
sheets were all that was developed.

I read an unexposed but developed sheet.  The reading
was .11

so far so good, but the next densities ran .33, .54,
.75, .95

This is a density change of about .20 per stop.  Now,
my question is this, should it be .20 above base for
the first step??  Should I redo the test?? Or is this
good results for that film, developer combination??

Some advice from you experienced densitometer folks
will be greatly appreciated.

OH, I rated the film at 125 for the first shot, then
opened up for each succeeding shot. Shutter speed was
kept the same, the F stop was changed.

Thanks for any advice, help.

Lauvone

=====
www.Lauvone.com

__________________________________________________
Do you Yahoo!?
The New Yahoo! Search - Faster. Easier. Bingo
http://search.yahoo.com