Hi Ed ...

I've a 23CII as well with the Dichro head.  Could you please explain
this adjustment you've made to the bellows?

I use a 50/2.8 APO Rodagon and have not noticed any light fall off with
that lens, nor with the 80mm Componon-S.  I bought the enlarger used and
it's clear that the previous owner used 2� negs, based on the negative
carriers and the lens that came with the enlarger.  So it's possible
that he'd made this adjustment to the bellows.  I'd like to know how to
tell if the adjustment was made and to learn how to do it. Thanks!

Ed wrote:
> 
> Mine's about 8-10 years old.  I bought it new, and it has the lighted
> aperture ring.  Sharpness is really, really good.  It's just the light
> falloff that's a problem.  With the cold light tube that snakes all
> around, and the diffuser under that, it looks very even at the source.
> Of course, it's also possible that the light just passing through the
> enlarger opening causes some diffraction at the edges which reduces the
> light to the corners.  I recently adjust the bellows to the lowest
> position (for med format neg - since it makes no difference with the
> cold light).  That moved the light source closer to the film and seems
> to have helped quite a bit.  So maybe the problem is not the lens at
> all, but the design of the 23CII.  Overall, the problem was it it's
> worst with the condensers, and got better with cold light, and now is
> better still with the bellows collapsed.
> 

-- 
Shel Belinkoff
mailto:[EMAIL PROTECTED]
http://home.earthlink.net/~belinkoff/pow/enter_pow.html
-
This message is from the Pentax-Discuss Mail List.  To unsubscribe,
go to http://www.pdml.net and follow the directions. Don't forget to
visit the Pentax Users' Gallery at http://pug.komkon.org .

Reply via email to