Archived posting to the Leica Users Group, 2007/09/12

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Subject: [Leica] Unsworth w33/now expos comp M8
From: lug at steveunsworth.co.uk (Steve Unsworth)
Date: Wed Sep 12 11:05:37 2007

I believe not.

Steve


On 12/9/07 15:53, "leo wesson" <leowesson@gmail.com> wrote:

> So if you convert the m8 dng to an adobe dng do you loose this quality?
> 
> Leo
> 
> On 9/12/07, Steve Unsworth <lug@steveunsworth.co.uk> wrote:
>> 
>> Hi Tina
>> 
>> What follows is a non-scientific of how the M8 records RAW files that will
>> probably appal anyone with an insight into how these things actually work
>> <grin>
>> 
>> In a normal raw image the bits are assigned in a linear fashion. This
>> means
>> that if you under expose by a stop half the possible values are lost. With
>> the M8 the values aren't assigned in a linear value. More of them are
>> assigned to the shadows than the highlights, so when you underexpose with
>> an
>> M8 you aren't throwing away as many of the values, so it doesn't have the
>> same effect as it does with a linear RAW file.
>> 
>> I'm sure someone will correct me if this is incorrect <grin>



In reply to: Message from leowesson at gmail.com (leo wesson) ([Leica] Unsworth w33/now expos comp M8)