[Leica] Trying to understand M8

[grduprey at mchsi.com (grduprey@mchsi.com)]

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


-------------- 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 
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> www.paulsphoto.com 
> 
> e. mark@paulsphoto.com 
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> f. 310-373-0053 
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> -----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. 
> > See http://leica-users.org/mailman/listinfo/lug for more information 
> 
> 
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> 
> 
> 
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