[Leica] Trying to understand M8

[henningw at archiphoto.com (Henning Wulff)]

>Mark,
>Nice to see you on the LUG, I remember you from the AOL Leica site 
>years ago.  Anyway, what about the older lenses not on the current 
>list of lenses for coding?  I have the 35/1.4 Summilux and the older 
>Thin 90/2.8 Tele-Elmarit.
>
>Gene
>

Worry not. I don't have an older 35/1.4 right now, but the 35/2 and 
the thin T-E work fine without coding. I've not sure what coding 
could do for them. There are no issues with the non-coded versions.

On the other hand, maybe it could make the T-E wide open as sharp as 
the 90AA??  :-)



>-------------- Original message from "Mark Comon" 
><mark@paulsphoto.com>: --------------
>
>
>>  I also understand there is some "optimization" of each individual lens
>>  (true focal length, performance, etc) in the 6 bit chip
>>
>>  My Leica sources recommend all users have the convert done on their
>>  Shooting glass (as opposed to collection glass)
>>
>>  Mark Comon
>>  Paul's Photo, Inc
>>  23845 Hawthorne Blvd
>>  Torrance, CA 90505
>>  www.paulsphoto.com
>>
>>  e. mark@paulsphoto.com
>>  p. 310-375-7014
>>  f. 310-373-0053
>>
>>  remember register for the exciting new features at www.paulsphoto.com!
>>  www.gallery2.paulsphoto.com
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>>  www.paulsphoto.com/maillist/?p=subscribe
>>
>>  -----Original Message-----
>>  From: Dante Stella [mailto:dstella1@ameritech.net]
>>  Sent: Saturday, September 16, 2006 11:44 AM
>>  To: Leica Users Group
>>  Subject: Re: [Leica] Trying to understand M8
>>
>>  Mehrdad, the coding is to tell the DSP how to process the image from
>>  the sensor. It is a big deal and something Kodak 14n owners
>>  understand. If you have a large chip without the right optimization,
>>  you will get CA, color shifts and other nasties. This was a big deal
>>  on the Kodak, where you had Nikon's 45mm flange distance and all
>>  retrofocus lenses; it will be a bigger deal with a Leica, where you
>>  get around 28mm of flange distance and many older non-retrofocus lenses.
>>
>>  On Sep 16, 2006, at 2:14 PM, mehrdad wrote:
>>
>>  > Yes to number one, the lens is still a 28mm lens, it feels like a 28mm
>>  > lens but with cropping that looks like a 35mm lens
>>  >
>>  > it is still unclear if the coding does anything, 99.99 of all M lenses
>>  > will work, i think the coding is like ROM on R lenses. not much use
>>  >
>>  > #3 it is just a little faster than 100, i am not following what you
>>  > are trying to understand
>>  > . also if you shoot raw format, it will give you +/- 1~2 stops
>>  > leverage depending on the lighting conditions.
>>  >
>>  > one thing to note about digital, it is much like shooting slides, the
>>  > exposure needs to be precise or you Will have burned highlights.
>>  > (this is one area that that digital needs improvements)
>>  >
>>  > On 9/16/06, Luis Ripoll wrote:
>>  >> Hi all,
>>  >>
>>  >> I'm sorry but I'm absolutely ignorant about digital, I've read the
>>  >> report
>>  >> for the M8 and I'm trying to understand three points:
>>  >>
>>  >> 1.- Viewfinder framelines: If you fit the M8 with a 28mm, the
>>  >> frameline you
>>  >> will see on the M8 would be the 35 mm focal length frameline?
>>  >>
>>  >> 2.- What is the purpose of the 6 bit coded lenses?. If I put an
>>  >> "ancient"
>>  >> lens on the M8, it should work as well with manual and automatic
>>  >> mode?
>>  >>
>>  >> 3.- If the ISO range is from 160 to 2500, and I'm used to be with
>>  >> i.e. 100
>>  >> ASA, this implies that the minimum ASA for digital is 160?. On
>>  >> this case a
>>  >> lens with a f stop of F4 could be the equivalent about 3,4/2,8 for
>>  >> a 100
>>  >> ASA.
>>  >>
>>  >> Could someone clarify me these points?
>>  >>
>>  >> Thanks in advance,
>>  >>
>>  >> Saludos desde Barcelona
>>  >> Luis
>>  >>
>>  >> _______________________________________________
>>  >> Leica Users Group.
>>  >> See http://leica-users.org/mailman/listinfo/lug for more information
>>  >>
>>  >
>>  >
>>  > --
>>  > -------------------------------------
>>  > regards, mehrdad
>>  >
>>  > _______________________________________________
>>  > Leica Users Group.
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>  >
>>
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>>
>>
>>
>>
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