Archived posting to the Leica Users Group, 2002/05/17

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: Re: [Leica] 400mm 6.8 question
From: "Julian Koplen" <>
Date: Fri, 17 May 2002 22:36:29 -0400
References: <>

Thanks, Doug.  I do indeed have that nul cam but completely overlooked it,
until you told me where to find it.


- ----- Original Message -----
From: "Douglas Herr" <>
To: <>
Sent: Friday, May 17, 2002 11:05 AM
Subject: Re: [Leica] 400mm 6.8 question

On Fri, 17 May 2002 10:44:22 -0400 Julian Koplen <>

> I have a version of this lens with what appears
> to me to be a plain vanilla lens mount.  I
> don't see any cams.  I use it primarily with an
> SL, but can I also use it on an R camera, with
> TTL metering at the working aperture , and
> get accurate aperture-priority exposures?  Or
> do I have to apply a compensating factor of
> some sort?

If the lens doesn't have the R nul cam, you can use it on an R body but
whether you need to compensate depends on which body it is.  With an R3- or
R4-series body, yes you do need to compensate.  With my R4s and R4sP bodies
I had to adjust exposure by 1.5 stops (I forget which direction) but at
least it's consistent through the metering range.  The newer bodies don't
need any compensation.

The R nul cam on this lens is a little metal tab at about the 8 o'clock
position looking at the rear of the lens.

Doug Herr
Birdman of Sacramento
- --
To unsubscribe, see

- --
To unsubscribe, see

In reply to: Message from Douglas Herr<> (Re: [Leica] 400mm 6.8 question)