Archived posting to the Leica Users Group, 2005/12/20

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Subject: [Leica] Nikon mount Zeiss lenses?
From: telyt at (Douglas Herr)
Date: Tue Dec 20 14:12:08 2005

This morning I was using the 560 f/6.8 with 1.4x APO-Extender; camera bodies
were R8 (standard screen) R4 (grid R screen) and SL.  As most of us know the
SL's viewscreen is unique, with its coarse central microprism and fine
microprism over the rest of the screen area.  Of these three cameras the SL
was by far the easiest to focus at f/9.5, using the fine microprism area.
No contest.  I have one SL with the plain matte screen and the results are
the same: the microprism screen is by far the easiest.
Doug Herr
Birdman of Sacramento

on 12/20/05 1:32 PM, Frank Dernie at wrote:

> Maybe my experience is unusual but even before autofocus I used plain
> ground glass screens for focussing. I have a grid GG screen in my R8
> and the same in my OM4Ti. I preferred not to have the obstruction
> centre screen and anyway I always thought that micro-prisms and split
> image range finders were angled to look through a f5.6 window (they
> tend to go dark at apertures slower than this) so the effective range
> finder base is rather small - though perhaps we are more sensitive to
> micro-prisms than coincident type focussing? Anybody know?
> Frank
> On 20 Dec, 2005, at 21:13, Didier Ludwig wrote:
>> yes manual focus with the d200 gets rather difficult as it has no
>> interchangeable focusing screen, no inbuilt split screen, no
>> microprisms. Unfortunately not, btw.
>> Didier
>>> focusing via a gree dot is hard and there is no spilt focusing screen
>>> for any of the D2 or D200, so yes you can focus but
>>> On 12/20/05, Jayanand Govindaraj <> wrote:
>>>> The D1 & D2 series, which have replaceable screens and have 100%
>>>> viewfinders which are easy to focus, as well as the new D200 can
>>>> be used
>>>> with these lenses with  virtually no loss of functions, including
>>>> matrix
>>>> metering.
>>>> Cheers
>>>> Jayanand Govindaraj
>>>> Chennai, India
>>>> mehrdad wrote:
>>>>> but manual focus lenses will not do, they need to sell AF with
>>>>> ultrasonic motors like the canon or new nikon lenses. the current
>>>>> nikon DSLR's dont have any split focusing screen and frankly
>>>>> people in
>>>>> that world want automation. I think sigma is more equiped to build
>>>>> these lenses
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>> Leica Users Group.
>> See for more information
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In reply to: Message from Frank.Dernie at (Frank Dernie) ([Leica] Nikon mount Zeiss lenses?)