Archived posting to the Leica Users Group, 2000/02/08

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Subject: Re: [Leica] 40/2 Summicron-C filter size
From: Mike Quinn <mlquinn@san.rr.com>
Date: Tue, 08 Feb 2000 08:54:27 -0800

I think you'll need an adapter. The 40/2 has two little raised ears on the
aperture ring that prevent you from attaching anything to the outside of the
lens. You could probably get a screw-in filter, remove the glass, and attach
it to that though.

Mike Quinn

 on 2/6/00 7:11 PM, John Collier at jbcollier@home.com wrote:

> The filter thread on the 40mm summicron is not E39 (39 x 0.5) it is 39 x
> 0.75 (some references call it SP39). The 40mm summicron is supposed to be
> used with series 7 filters retained by the hood. The outside diameter, where
> the lens cap goes, is 41.5 mm as compared to 42 mm on the E39/A42 lenses. I
> think that the clamping mech on the 13352 polarizer  would work fine but you
> might have to add a piece of tape.
> 
> John Collier
> 
>> From: Stanley E Yoder <syoder+@ANDREW.CMU.EDU>
>> Date: Sun,  6 Feb 2000 19:25:16 -0500 (EST)
>> Subject: [Leica] 40/2 Summicron-C filter size
>> 
>> What is the outside diameter of this CL lens? Will E39/A42
>> accessories like the 13352 polarizer fit, or are they too large? If the
>> latter, any adapters along the lines of the SOOGZ?