Archived posting to the Leica Users Group, 2010/06/13

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Subject: [Leica] R mount lenses on Micro Four Thirds
From: photo at (Nathan Wajsman)
Date: Sun, 13 Jun 2010 18:03:12 +0200
References: <>

No, but what it does provide is that the LCD or EVF automatically adjusts 
brightness when you stop down the lens, eliminating one of the traditional 
difficulties with using old lenses on DSLRs.


Nathan Wajsman
Alicante, Spain


On Jun 13, 2010, at 4:48 PM, red735i at wrote:

> Please explain further... makes no sense to me....I assume you are 
> referrring to a electronic viewfinder (EV)?
> The purpose of focusing at F2 and shooting at F32 is to get the minimum 
> DOF for accurate focusing and mzximum DOF for shooting.  Use the term .. 
> un-ambiguous focusing plane...
> An EV does not provide for this...... as far as I can see.....
> ???
> Frank
> -----Original Message-----
>> From: Steve Unsworth <lug at>
>> Sent: Jun 13, 2010 7:17 AM
>> To: Leica Users Group <lug at>
>> Subject: Re: [Leica] R mount lenses on Micro Four Thirds
>> The system supports focussing at the selected f stop. There's no need to 
>> focus wide open and then stop down before taking the shot.
>> Steve
>> On 13 Jun 2010, at 14:45, red735i at wrote:
>>> I assume there is no connection from body to lens for the 
>>> auto-diaphragm?  YOu must manually stop down to F-whatever for each shot 
>>> ?  ( or focus and complse at working aperture?)
>>> Frank
>>>> I am using my Leica R 60mm Macro on the Panasonic GF-1 and GH-1 with 
>>>> the Panasonic DMW-MA3R adapter. Works wonderfully.  I was thinking of 
>>>> getting the Leica 45mm Macro (m4/3), but thought "hey, why not just get 
>>>> the adapter and use the R macro I already have?"
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In reply to: Message from red735i at (red735i at ([Leica] R mount lenses on Micro Four Thirds)