Problems with Astron 4x5" enlarger

Dear all,

I got a very old Astron enlarger, which accept negatives in
all formats from 24x35mm up to 4x5" but I am having a problem
with the largest size because I cannot find any way to assemble
the condensers so to have the corners of the negative properly
printed.

The enlarger comes with several condenser, all of them
are shaped as a slice of a sphere (plane on one side and spherical
on the other) and they differ only for their diameter and for
the radius of curvature of the spherical part.

I think I tried all possible combinations but I still have problems.

Can anyone give me a suggestion?

Thanks in advance.

Stefano


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On 10/10/2004 2:47 PM Ferri Stefano spake thus:

I got a very old Astron enlarger, which accept negatives in
all formats from 24x35mm up to 4x5" but I am having a problem
with the largest size because I cannot find any way to assemble
the condensers so to have the corners of the negative properly
printed.

The enlarger comes with several condenser, all of them
are shaped as a slice of a sphere (plane on one side and spherical
on the other) and they differ only for their diameter and for
the radius of curvature of the spherical part.

I think I tried all possible combinations but I still have problems.

Can anyone give me a suggestion?

Yes; so far as I know, condensers are always used in matched pairs, not in
other odd combinations, so if the largest (or smallest) size doesn't work, you
may be missing the right ones for 4x5.


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