Archived posting to the Leica Users Group, 2003/09/01

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Subject: [Leica] Re: Digital Leica M
From: JCB <jcb@visualimpressions.com>
Date: Mon, 01 Sep 2003 12:26:09 -0700
References: <p05100304bb792684bc5b@[10.0.1.4]>

The problem is that the Foveon chip is WORSE in this respect than 
conventional CCD/CMOS Bayer pattern chips. Why? Because the green and red 
sensors are deep within the chip rather than on the surface. If you want to 
really see color fringing out on the edge of a digital photo, using a wide 
angle lens, just use a Foveon chip. I have a friend that works at Foveon 
and have seen the results first hand. Or you can go buy a Sigma/Foveon and 
see for yourself.

http://www.foveon.com/X3_tech.html

The only answer to the wide angle lens - sensor acceptance angle problem is 
to design digital specific lenses which have a collimator lens at the rear 
to re-angle the light rays straight down onto the sensor. One lens 
manufacturer is already doing this.

JB


At 11:04 AM 9/1/2003 -0700, Feli di Giorgio wrote:


>I'm starting to think that Leica should just cut it's loses and make a 
>Foveon chipped
>digital M, regardless of it being backwards compatible or not. They could 
>keep the traditional
>shape/size and come up with a new set of lenses. There would probably be 
>an enormous outcry,
>but I think they would still sell a ton of them. Initially they could 
>release a fast 35/50/90 set.
>
>feli
>
>>In terms of today's technology, Leica is right and you are wrong.
>>
>>Leica lenses of 50mm and shorter have a much greater angle of incidence 
>>in to corners of the frame than SLR lenses, and those are the lenses of 
>>interest. Which Leica M user would accept being able to
>>Whether the Leica M is at the end of its development as a useful camera, 
>>is a completely different issue.   Henning J. Wulff

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Replies: Reply from JCB <jcb@visualimpressions.com> ([Leica] Re: Re: Digital Leica M)
In reply to: Message from Henning Wulff <henningw@archiphoto.com> (Re: [Leica] Digital Leica M)