Archived posting to the Leica Users Group, 2006/09/20

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Subject: [Leica] Re: the dynamic range of digital
From: drodgers at (David Rodgers)
Date: Wed Sep 20 12:40:04 2006

Interesting but the Luminous article has a very
which makes me immediately question their authority on correct exposure.

Doug's images, OTOH, all look pretty right-on colorwise to me. So while
I don't know who or what to believe, Doug has an edge in my book. 

This digital stuff is a challenge. I've been shooting film for 30-years
and darn it if I wasn't just beginning to get that stuff figured out! 


-----Original Message-----
From: B. D. Colen [] 
Sent: Tuesday, September 19, 2006 10:58 PM
To: Leica Users Group
Subject: Re: [Leica] Re: the dynamic range of digital

Being the digital expert you are, Doug, I would have thought that you'd
that by under exposing a stop, you're throwing away everything at the
end of the range - in the highlights - not the shadows - and 20% of the
is in that top stop. But I don't use a DMR, so of course I know nothing
about digital ;-) - so don't listen to me, but do try reading
the Luminous Landscape site....

> In my experience with the DMR, setting exposure comp to -.5 or -1
> sacrifices very little deep shadow detail if any.  It's not what I'd
> call a 20% loss of data.  The histogram (yes it's RGB) is nowhere near
> clipping at either end aside from specular highlights.  Perhaps B.D.'s
> 20% estimate is based on his experience with the E-1?
> Doug Herr
> Birdman of Sacramento
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