Archived posting to the Leica Users Group, 2008/08/28

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Subject: [Leica] Getting close to Photokina... I want to start anew rumor....
From: imagist3 at mac.com (Lottermoser George)
Date: Thu Aug 28 06:37:44 2008
References: <C5E8BB473E6A4F228A6598011DF8F56A@dadquad> <69448.33847.qm@web86712.mail.ukl.yahoo.com> <019501c9090e$53afebc0$fb0fc340$@net>
 
the dmr has an IR filter on the sensor
the slr retrofocus wide angles achieve angles closer to 90û
unlike film - sensors prefer light beams coming as close to 90û as  
possible.

the issue for the M digital was and is
true wide angle lens designs casting their focused image rays at  
severe angles to the sensor.
this required a filter with special offset microlenses on top of the  
sensor to reduce vignetting

the questions remain:
        how many "filters" do we lay on top of the sensor?
        what effect do the filers have on image quality (including the all  
important fine micro detail)?
        what compromises in image quality do we make?

Fond regards,
George

george@imagist.com
http://www.imagist.com
http://www.imagist.com/blog
http://www.linkedin.com/in/imagist



On Aug 28, 2008, at 8:02 AM, Frank Filippone wrote:

> Or did it?
Replies: Reply from red735i at earthlink.net (Frank Filippone) ([Leica] Getting close to Photokina... I want to start anew rumor....)
 In reply to: Message from hoppyman at bigpond.net.au (Geoff Hopkinson) ([Leica] Getting close to Photokina... I want to start anew rumor....)
Message from frank.dernie at btinternet.com (FRANK DERNIE) ([Leica] Getting close to Photokina... I want to start anew rumor....)
Message from red735i at earthlink.net (Frank Filippone) ([Leica] Getting close to Photokina... I want to start anew rumor....)