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

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Subject: [Leica] M9 gotcha
From: hopsternew at gmail.com (Geoff Hopkinson)
Date: Mon, 28 Oct 2013 10:13:27 +1100
References: <682AEF14A4CABCC240025B87@Visible-Trout.local> <CAE3QcF52cWiDbTy5Zyc89-GwJF1mRt+x3Y2DiVWXtZrtbV8+Fg@mail.gmail.com> <0b4b01ced35e$30294280$907bc780$@verizon.net> <CAE3QcF7iY-9-8hYQwYPg=zozJi7KkUqsN=EouRqTvDw9sjkVZQ@mail.gmail.com> <0b6201ced368$40ec2380$c2c46a80$@verizon.net>

The M has an option for LOSSLESS compression
On Oct 28, 2013 9:00 AM, "Frank Filippone" <red735i at verizon.net> wrote:

> The M does or does not have compressed data files ( by selection)?
>
> I got my M9 about a year ago... no M in my future, for now....  I have shot
> everything in RAW Compressed....
>
> Frank Filippone
> Red735i at verizon.net
>
>
> Well it's a four year old discussion Frank. Some people never used the
> compression but ask any of us to actually demonstrate the difference in
> photos and we cannot.
> The M with much greater processing power has not used this option.
>
>
> > Geoff... if it is either 8 bits or 14 bits, and you then process the
> > image in LR or CS, what data is LR or CS working with?  8 bits, or
> > during file opening, the data is decompressed from 8 bits back up to
> > 14 bits and then you are working with 14 bit data?
> >
> > The issue to me is the quantization level achievable in the post
> > processing.....
> >
> > Frank Filippone
> > Red735i at verizon.net
> >
> >
> > 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.
> >
> >
> > Cheers
> > Geoff
>
>
>
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> Leica Users Group.
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>


In reply to: Message from reid at mejac.palo-alto.ca.us (Brian Reid) ([Leica] M9 gotcha)
Message from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] M9 gotcha)
Message from red735i at verizon.net (Frank Filippone) ([Leica] M9 gotcha)
Message from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] M9 gotcha)
Message from red735i at verizon.net (Frank Filippone) ([Leica] M9 gotcha)