Archived posting to the Leica Users Group, 1999/01/30

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Subject: Re: [Leica] plug inside non-TTL M6
From: Dan Cardish <>
Date: Sat, 30 Jan 1999 18:32:12 -0500

My HM M6 as well as my Wetzlar era M6 both have the plugs.

Dan C.

At 04:15 PM 30-01-99 -0500, you wrote:
>I noticed that the non-TTL M6 has a small hole that's sealed with a
>rubber plug, which you can see by removing the lens and looking at the
>bottom surface on the inside.
>Page 15 of Leica's brochure ("Leica. The Program") shows that this is
>where the TTL photodiode sensor resides.
>Does anyone know when the hole/plug was added to the non-TTL body, or
>has it been there since the first M6?  I wonder if TTL was always the
>planned use for that spot, or if there was some other reason for it.