Diffraction, macro close-up

[P3D Joshua Rubin <jnr@xxxxxxxxx>]

Tangential to 3-d, but . . .

I'm doing a macro project in which I'd like to maximize my depth of field,
but of course, when you stop down too much, diffraction degrades the image
. . .

which got me to thinking . . .

If diffraction is caused by edges, what if the aperture were a small
circular gradient on a transparent film where the diaphragm would otherwise
be, instead of a sharply-defined hole?  Then there wouldn't be an edge per
se.  Would that eliminate or minimize the diffraction?


Josh

    Joshua Rubin
(h) jnr@xxxxxxxxx
(w) jrubin@xxxxxxxxx



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