Archived posting to the Leica Users Group, 2000/01/22

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Subject: Re: [Leica] Noctilux result????
From: John Collier <jbcollier@home.com>
Date: Sat, 22 Jan 2000 13:52:39 -0700

on 22/1/00 12:18 pm, Chandos Brown at cmbrow@wm.edu wrote:

> There's more going on in these images than vignetting--I get symmetrical fall
> off at the corners in the worst case (see, for example:
> http://www.wm.edu/CAS/ASP/faculty/brown/photography/People/joline.htm
> 
> What I see in yours look either like some interaction between filter and
> lens--or perhaps even a processing problem.  Have you got any other examples?
> 
> And, for what it's worth, all my Nocti images are shot through a B&W MC UV
> filter.

I agree. I have seen many wide open Nocti images (including ones shot
through a ND filter to get the f1 vignetting effect in daylight) and they do
not look like these images. Take some pictures without filters and see what
that does. What filter are you using?

John Collier