Archived posting to the Leica Users Group, 2006/07/13

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Subject: [Leica] 6 Bit Coding on Lenses
From: red735i at earthlink.net (Frank Filippone)
Date: Thu Jul 13 11:44:56 2006

Precisely what I asked.......   Data is not theory or rumor or speculation, 
it is hard facts.

Does anyone have any data?  What is the camera doing to 
correct/amend/change/augment/etc.  anything?

If the 6 bit code does have specific in-camera functionality, how does one 
get that same result if you use an uncoded lens of the
same but older vintage  ( Thinking for example now of the 24 ASPH )?  
Without the coding, the camera does not do something and
afterwards nothing can retro-fix the corrections into the image?  

Let me make a comment.... it would be smarter to allow for corrections in 
some PS or other plug-in ( or even allow for the download
software make these changes) than to do anything in the camera.  It would 
save batteries, make changes in algorithms more flexible,
allow for third party support, make the camera faster to operate, make the 
camera cheaper to manufacture ( smaller dumber uP) and
generally, make life more manageable.  

But Leica is not an acronym for customer service.......


Frank Filippone
red735i@earthlink.net 



I know that there has been speculation that the "6 bit" code will probably 
have something to do with vignette correction within the camera. Leica 
refers to "Image Optimization: without getting specific (at least in what I 
have read).  Does anyone know authoritatively what the code does to the 
image (not the Exif or metadata) in the camera?

Ed K


>
> I think that was largely discussed here a few weeks ago. The M digital's 
> in-camera software will use different anti-vignetting and other 
> postprocessing algorithms, depending on which lens is used.
>
> Didier
>
>
>>"Lenses in the current range as well as many earlier models can be 
>>retrofitted at the cost of the owner to benefit from the image
>>optimization in the camera."
>>
>>"Apart from the improvement in image quality, this information is also 
>>written into the EXIF image file."
>>
>>There is a more than passing comment that the camera itself does something 
>>with the coding from the lenses.  Do we have any data
>>that tells us what?  ( apart from recording it into the EXIF data 
>>locations).
>>
>>Frank Filippone
>>red735i@earthlink.net
>
>on



Replies: Reply from henningw at archiphoto.com (Henning Wulff) ([Leica] 6 Bit Coding on Lenses)
Reply from richard-lists at imagecraft.com (Richard) ([Leica] 6 Bit Coding on Lenses)
Reply from lug at steveunsworth.co.uk (Steve Unsworth) ([Leica] 6 Bit Coding on Lenses)
In reply to: Message from ekowaleski at twmi.rr.com (Ed Kowaleski) ([Leica] 6 Bit Coding on Lenses)