Archived posting to the Leica Users Group, 2009/01/15

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Subject: [Leica] Question about M8 exposure
From: richard.lists at gmail.com (Richard Man)
Date: Thu Jan 15 13:24:57 2009
References: <10E9486C0AA54E73AC3661023A10551D@precisionm50> <C59541F8.1F8B7%lug@steveunsworth.co.uk> <9F0FEF7598E2461CB326C90B27A59004@dadquad>
 
Geoff, a major factor that you have not discussed is that digital sensors
are not linear device - that is, a sensor may have better response in
certain range (e.g. midtone) than others. The conversion from this "native"
characteristics of the sensor to the "RAW" output, is one of the secret
sauces of the camera maker.

On Thu, Jan 15, 2009 at 12:59 PM, Geoff Hopkinson
<hoppyman@bigpond.net.au>wrote:

> Steve I think that there are several issues confused there. The original
> linear information captured must be conform to the fundamental principle.
> Half of total are used the represent the first (brightest) stop, one
> quarter
> the next, one eighth the next, one sixteenth the next etc. Up to a reported
> 81/2 stops of maximum dynamic range for the DNG.
>
>
-- 
// richard m: richard @imagecraft.com
// b: http://rfman.wordpress.com
Replies: Reply from leica at web-options.com (Bob W) ([Leica] Question about M8 exposure)
Reply from hoppyman at bigpond.net.au (Geoff Hopkinson) ([Leica] Question about M8 exposure)
 In reply to: Message from leica at web-options.com (Bob W) ([Leica] Question about M8 exposure)
Message from lug at steveunsworth.co.uk (Steve Unsworth) ([Leica] Question about M8 exposure)
Message from hoppyman at bigpond.net.au (Geoff Hopkinson) ([Leica] Question about M8 exposure)