Archived posting to the Leica Users Group, 2006/11/08

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Subject: [Leica] 2500 ISO
From: imagist3 at mac.com (Lottermoser George)
Date: Wed Nov 8 07:56:22 2006
References: <380-220061127153735827@M2W013.mail2web.com> <7CD82222-DA1B-4CA1-8232-6C70E6C031FF@charter.net> <D5B4F5FB-DA18-44D3-BDD1-0DF29FB832C8@mac.com> <45510D11.60803@waltjohnson.com> <61953867-6882-403A-B2F8-A2158CE922B9@mac.com> <4551EF90.9070502@waltjohnson.com>

Hi Walt,

Certainly, setting two cameras on a tripod right next to each other  
with the same lens, etc. would give more critical information.  
However, I'm looking at well exposed RAW files of similar subjects,  
under similar available lighting and speaking only of the: detail  
rendered, noise (and its qualities of size, color and pixelation),  
and where that noise has most effect in zone V and below. These  
comparisons are very much like comparing film grain, resolution,  
ability to render detail, color, etc. I've looked at a lot of RAW  
files from a lot of sensors including: Canon 10D, 20D, 5D, Leica DMR,  
Leica M8 and few medium format backs of various vintages (have not  
seen RAW from the newest 16 and 22 mpixel backs). Through my  
subjective eyes the DMR and M8, at 400 or below, detail rendition,  
color fidelity (skin tones, neutrals, etc.) and dynamic range equals  
the medium format backs of a year or two ago and surpasses my 5D.  
Over 400 the 5D seems to surpass the M8. I haven't seen DMR RAW files  
above 400.

Regards,
George Lottermoser
george@imagist.com



On Nov 8, 2006, at 8:54 AM, Walt Johnson wrote:

> Wouldn't you have to run a test by shooting the same subject with  
> different cameras at the same time to make accurate decisions?


Replies: Reply from walt at waltjohnson.com (Walt Johnson) ([Leica] 2500 ISO)
In reply to: Message from telyt at earthlink.net (telyt@earthlink.net) ([Leica] 2500 ISO)
Message from s.dimitrov at charter.net (Slobodan Dimitrov) ([Leica] 2500 ISO)
Message from imagist3 at mac.com (Lottermoser George) ([Leica] 2500 ISO)
Message from walt at waltjohnson.com (Walt Johnson) ([Leica] 2500 ISO)
Message from imagist3 at mac.com (Lottermoser George) ([Leica] 2500 ISO)
Message from walt at waltjohnson.com (Walt Johnson) ([Leica] 2500 ISO)