Archived posting to the Leica Users Group, 2013/10/27

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Subject: [Leica] M9 gotcha
From: hopsternew at (Geoff Hopkinson)
Date: Mon, 28 Oct 2013 07:21:44 +1100
References: <682AEF14A4CABCC240025B87@Visible-Trout.local>

Brian, anecdotally most M9 shooters use that compressed option, although I
didn't personally.  Of course, with the M8 it was the only option. The key
is that it is non-linear compression. If you like I'll send you a copy of
the LFI explanation of the mechanism.


On 28 October 2013 01:45, Brian Reid <reid at> wrote:

> This weekend I learned, the hard way, that if you ask an M9 to produce
> compressed DNG files it only keeps 8 bits per pixel. If you want the full
> 14 bits per pixel that the sensor records you have to store uncompressed
> DNG.
> I didn't read the documentation as closely as i should have. Not that the
> documentation is explicit about this. On page 174 of the English-language
> manual it says that DNG compression is achieved "by non?linear reduction of
> color depth".
> Foo. Next time I'll get this right.
> ______________________________**_________________
> Leica Users Group.
> See 
>  more information

Replies: Reply from red735i at (Frank Filippone) ([Leica] M9 gotcha)
In reply to: Message from reid at (Brian Reid) ([Leica] M9 gotcha)