Re: [Leica] sticky noctilux focus ring???

[Henning Wulff <henningw@archiphoto.com>]

At 12:11 AM -0500 3/9/02, Grant Heffernan wrote:
>A question for Noct users:
>When turning the focus ring from close focus to infinity (or back), without
>stopping, everything feels Leica smooth. However, if I'm moving from say,
>close focus to infinity, stop half way, then turn back the other way, it
>seems like there's a slight stick to the focus ring.
>Hopefully that makes sense. I only notice it when making small focus
>adjustments, but it is noticeable.
>I'm just wondering if this is the results of moving those large elements
>around, or is it a defect.
>TIA

This can be due to the lubricant being a bit stiff and/or being 
unevenly distributed. The cure is to use the lens a lot. Happens most 
often with larger lenses that have sat NIB or on someones shelf for 
many years. I have a 75 that still has a little bit of that, and I've 
had it for 2 years now with a fair bit of use. I think it sat around 
for about 10 years without a human touch before that. With my lens I 
found it annoying when playing around with it, but forgot about it in 
use, so no point worrying about it.

I suppose you could get it relubed under warranty (if you bought it 
new), but I would try it for a while for taking pictures; then decide.

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    *            Henning J. Wulff
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