Today when I was using my older model 108 Devere enlarger with the
8x10 mask in it, I noticed that the image was visibly moving around
on the easel! Yikes! This enlarger has a big fan on it because the
lights get so hot. Previously, when using the smaller masks (4x5,
6x6cm) vibration hasn't been a problem. I went all around the
enlarger looking for sources of the vibration. The head itself
vibrates quite a lot, but again, this has never caused visible
vibration on the paper with the smaller masks. I tied up the duct
hose going from the head so that it doesn't touch anything, but the
vibration is still barely visible.
Strangely, the prints don't look fuzzy to the naked eye. But they
MUST be affected by this, right? I was thinking of trying to enlarge
some 8x10 negatives, but given how much the image shook when I put a
medium format strip in that holder, I wonder if I should even try.
(I don't have a lens mounted in a lensboard yet for 8x10 negs.)
My only idea about why the 8x10 glass carrier vibrates so much more
than the others is that the others have a sort of hole, like a finger
hole, and maybe the air can pass through that hole, whereas with the
8x10 holder there is no hole, so the fan just sucks on the glass and
the resistance causes some vibration. (Oops, Eudora doesn't like
that word "sucks." I'll probably get some red peppers next to this
message. But seriously, bad vibrations suck! Yes, indeed, I have two
hot peppers!)
Any suggestions?
--shannon ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.
