Archived posting to the Leica Users Group, 2009/06/16

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Subject: [Leica] OT: Olympus micro 4/3 preview
From: Frank.Dernie at btinternet.com (Frank Dernie)
Date: Tue, 16 Jun 2009 09:01:26 +0100
References: <11259484.1245113685768.JavaMail.root@elwamui-lapwing.atl.sa.earthlink.net> <003e01c9ee3f$e4965ea0$adc31be0$@net>

People bang on about the noise of 4/3 sensors, they are certainly  
inferior to 24x36 sensors, but I find the noise less noticeable than  
grain on equivalent speed film, for example, so it is not as good as  
most digital, but still better than film in respect to light  
sensitivity.
Leica said digital sensors were unsuitable for rangefinder design WA  
lenses before customer pressure led to the M8 (who then complained  
about the compromises chosen to deal with what Leica had warned  
about). They were not wrong and  the wide Leica lenses do not work as  
well on a 4/3 sensor as on the M8, which has the microlenses over the  
sensor re-orientated to an average angle more suited to the angle of  
incidence on them from rangefinder lenses (some better than others,  
obviously).
If you want to use 50mm and longer M lenses (cropped to half size)  
this should be OK, but not as good as the Panasonic which Howard, in  
particular, gave details of a few months ago.
FD

On 16 Jun, 2009, at 06:04, Frank Filippone wrote:

> Thanks Doug.....
>
> The Pen lenses came in these Fl:
> 20, 25, 38, 40, 42, 60, 70, 50-90, 100-200, 100, 150, 250 mm and more
> telephotos that are pretty rare.....
>
> So pretty much, you are talking about normal ( FOV) to telephotos on  
> the 4/3
> format using Pen F lenses......
>
> If there were a M adapter to 4/3 ( and we now know that Panasonic has
> announced one), the FL are more wide angle related.... with the 12  
> and 15mm
> Cosina lenses through to the 135mm.
>
> I think this may be a reasonably priced solution to the Digi-M.   
> ( albeit
> 4/3 sensor size.....which will impact noise levels)
>
> Frank Filippone
> red735i at earthlink.net
>
>
> 1/4 the surface area, about 1/2 the diagonal so a 35mm lens on a 4/3  
> camera
> has the field of view of a 70mm lens on a 24x36mm camera.
>
> Doug Herr
>
>
>
>
> _______________________________________________
> Leica Users Group.
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Replies: Reply from red735i at earthlink.net (Frank Filippone) ([Leica] OT: Olympus micro 4/3 preview)
In reply to: Message from wildlightphoto at earthlink.net (Doug Herr) ([Leica] OT: Olympus micro 4/3 preview)
Message from red735i at earthlink.net (Frank Filippone) ([Leica] OT: Olympus micro 4/3 preview)