Archived posting to the Leica Users Group, 2000/04/09

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Subject: Re: [Leica] Filter for 40mm Summicron.
From: "Richard Ogden" <>
Date: Mon, 10 Apr 2000 07:49:40 +0100

The screw thread is 39mm x 0.75 not the 39mm x 0.5 of the E39 standard.
Series 5.5 filters are held in place by the hoods of the 40 Summicron-C & 90
Elmar-C lenses. Difficult to find second hand, series 5.5 filters can be
ordered new from B & W (Schneider). Special order, but they arrive

Hope this helps.
Richard Ogden
Preston, Lancashire, UK

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- ----- Original Message -----
From: "Edmund-Tan Ann-Wen (r40248)" <>
To: <>
Sent: Monday, April 10, 2000 2:09 AM
Subject: [Leica] Filter for 40mm Summicron.

> Friends,
> I have just got a CL with 40mm Summicron, but don't know the filter size.
> heard some people saying the 40 Summicron uses Series 5.5 type filters,
but mine
> has a screw thread in front, and measures close to 39mm. So, is it an E39?
> Thank you,