Archived posting to the Leica Users Group, 2010/04/15

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Subject: [Leica] M Lenses on GF-1
From: jhnichols at lighttube.net (Jim Nichols)
Date: Thu, 15 Apr 2010 21:52:01 -0500
References: <1436733545.5412641271369349850.JavaMail.root@dsmdc-mail-mbs12>

I did some searching, and read Erwin Puts' article on the R lenses, and I 
concluded the same thing.  I was especially interested in the 50 Summicron, 
which I use in the R version.  My other R lenses are Elmarits.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: <grduprey at mchsi.com>
To: "Leica Users Group" <lug at leica-users.org>
Sent: Thursday, April 15, 2010 5:09 PM
Subject: Re: [Leica] M Lenses on GF-1


> Which Summicrons?  35, 50, 90?  Although I believe they are all different 
> designs between the M & R series.
>
> Gene
>
> ----- Original Message -----
> From: "Jim Nichols" <jhnichols at lighttube.net>
> To: "Leica Users Group" <lug at leica-users.org>
> Sent: Thursday, April 15, 2010 9:48:21 AM GMT -06:00 US/Canada Central
> Subject: Re: [Leica] M Lenses on GF-1
>
> Hi Richard,
>
> I use Leica-R lenses on my Olympus E-1.  Is there a lot of difference
> between the Summicron-R and the Summicron-M design?
>
> Jim Nichols
> Tullahoma, TN USA
> ----- Original Message ----- 
> From: "Richard Taylor" <r.s.taylor at comcast.net>
> To: "Leica Users Group" <lug at leica-users.org>
> Sent: Thursday, April 15, 2010 9:42 AM
> Subject: Re: [Leica] M Lenses on GF-1
>
>
>> The best way to think about this is to think of each pixel as a tiny
>> bucket with steep sides and the light sensitive area at the bottom. 
>> Light
>> must go straight in in order to be detected.  Light arriving at anything
>> other than almost straight in is either lost or scattered.
>>
>> That's why the sensors in the M8 and M9 have the offset lenses on top of
>> the sensor.
>> They allow the sensor to respond better to the off-axis light coming out
>> of M-type lenses.
>>
>> SLR lenses are usually retrofocus designs that send the light close to
>> straight in to the sensors and therefore work better on the micro 4-3rds
>> cameras than M lenses do.
>>
>> Dick
>>
>> (Who works with sensors like these in the infrared for space missions.)
>>
>>
>>
>> On Apr 15, 2010, at 9:17 AM, Simon Ogilvie wrote:
>>
>>>> I'm also perplexed at how Contax G lenses can be materially better on
>>>> Micro Four Thirds than are Leica M lenses, or even CV lenses for that
>>>> matter. While I haven't used all on Micro Four Thirds I have used them
>>>> all on film and for the most part they're all pretty good. Thus I'm
>>>> curious as to why the performance would be so different on Micro Four
>>>> Thirds. What kind of adapters are you using?
>>>
>>> I agree - one of the primary reasons I bought into the 4/3 system was
>>> because it allowed me to use my Leica M (and Voigtlander) lenses which
>>> don't see much use any more as I shoot very little film these days.
>>> The results using these lenses were very disappointing.  The Panasonic
>>> 14-45 covers the range of nearly all of my M lenses anyway, so as the
>>> results seem better and it's much more convenient to use, I stick with
>>> the zoom.    I was surprised that the results from the Contax G lenses
>>> looked so much nicer.  Why this is the case when the Leica lenses are
>>> so nice with film I cannot explain.  The adapters are the Voigtlander
>>> one for the Leica-M lenses, and an adapter imported from Hong Kong for
>>> the Contax G with a little manual focus wheel that engages with the
>>> focussing drive on the lenses.
>>>
>>>
>>
>>
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>>
>>
>
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>
> _______________________________________________
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> See http://leica-users.org/mailman/listinfo/lug for more information
>
> 




In reply to: Message from grduprey at mchsi.com (grduprey at mchsi.com) ([Leica] M Lenses on GF-1)