Re: [Leica] Diffraction limited; bo-ke

[Mark Rabiner <mark@rabiner.cncoffice.com>]

Dan Post wrote:
> 
> MArk-
> Sounds reasonable!
> Remember- this diffraction as a factor in lessening contrast, and possibly
> sharpness also applies to the enlarger lens as well!
><Snip> 
Diffraction is supposed to be a much bigger issue with enlarging lenses than
camera lenes I've read.
There are now enlarging lense out there that Don't stop down at all you use them
as is.
And I think there is one out there with no aperture blades but a series of
plates with perfect holes in them that you insert in for different F stops.
Intriguingly hard core. Now that I am Zig aligned I'm stopping down a lot less
and enjoying it more!
And that warm stuff is slow!
Mark Rabiner