Archived posting to the Leica Users Group, 2010/06/06

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Subject: [Leica] DNG Compression
From: hopsternew at gmail.com (Geoff Hopkinson)
Date: Sun, 6 Jun 2010 20:23:36 +1000
References: <15184177894867703738491285857243387280-Webmail@me.com> <145329954870179055235352676650609271623-Webmail@me.com> <AANLkTikF2465ti9raW4q0uStsWJKVdeEQUV1YOGR_S6T@mail.gmail.com> <AANLkTilxDMwSLbrS4NaA_MvlvySQpBA6pUL4jWe63ugE@mail.gmail.com> <AANLkTik9Y9feXTmlzFX5lxi5ej6Hl3WwjaCf9SJqaEDn@mail.gmail.com>

That is my choice, yes. Whether or not the difference is significant is up
to the individual user, naturally.
I prefer to preserve all possible information.

Cheers
Geoff
http://www.pbase.com/hoppyman


On 6 June 2010 20:17, Richard Man <richard at imagecraft.com> wrote:

> In plain English, are you saying that uncompressed DNG will give you
> "no-compromise" with the exception of slower writes?
>
> If so, I will stick with that.
>
> On Sun, Jun 6, 2010 at 3:07 AM, Geoff Hopkinson <hopsternew at gmail.com
> >wrote:
>
> > You may like to research the way that the black point is now set
> especially
> > with higher ISO files when using the in camera compression to see if it
> is
> > important for you in practice.
> > Certainly you may find that the difference is not important for you but
> the
> > process has changed compared to what was happening in the M8. This may be
> > part of the way noise characteristics have been improved for higher
> ISO's.
> > Specifically you may encounter that the black point may now be set much
> > higher (clipping the more contaminated darks).
> >
> > Cheers
> > Geoff
> > http://www.pbase.com/hoppyman
> >
> >
> > On 6 June 2010 15:04, Richard Man <richard at imagecraft.com> wrote:
> >
> > > Thanks for the info. Most of the time I don't find the speed limiting
> but
> > > there have been a few instances where it was a bit too slow. Nice to
> know
> > > and I will give it a try.
> > >
> > >
> > > On Sat, Jun 5, 2010 at 6:57 PM, Scott Gregory <s_gregory1 at mac.com>
> > wrote:
> > >
> > > > For what it's worth, I attended the Leica M9 Roadshow in Toronto this
> > > past
> > > > Thursday. The subject of shooting with the 9 in compression or not
> came
> > > up
> > > > and most of the shooters using M9's including Justin Stailey said
> they
> > > shoot
> > > > the M9 in compressed mode. Reason was the camera works faster for
> their
> > > > purposes, street photography, wedding work etc. Less information for
> > the
> > > > camera to move around and said until an engineer comes up with
> > something
> > > > different they would stay with compressed. Apparently most had done
> > > > comparison tests and could not come up with any real negatives
> between
> > > for
> > > > using in terms of quality being less.
> > > > For what it's worth!
> > > >
> > > > Scott
> > > >
> > > > _______________________________________________
> > > > Leica Users Group.
> > > > See http://leica-users.org/mailman/listinfo/lug for more information
> > > >
> > >
> > >
> > >
> > > --
> > > // richard <http://www.imagecraft.com/>
> > > // icc blog: <http://imagecraft.wordpress.com>
> > > // photo blog: <http://www.5pmlight.com>
> > > [ For technical support on ImageCraft products, please include all
> > previous
> > > replies in your msgs. ]
> > >
> > > _______________________________________________
> > > Leica Users Group.
> > > See http://leica-users.org/mailman/listinfo/lug for more information
> > >
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
> >
>
>
>
> --
> // richard <http://www.imagecraft.com/>
> // icc blog: <http://imagecraft.wordpress.com>
> // photo blog: <http://www.5pmlight.com>
> [ For technical support on ImageCraft products, please include all previous
> replies in your msgs. ]
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>


In reply to: Message from s_gregory1 at mac.com (Scott Gregory) ([Leica] DNG Compression)
Message from richard at imagecraft.com (Richard Man) ([Leica] DNG Compression)
Message from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] DNG Compression)
Message from richard at imagecraft.com (Richard Man) ([Leica] DNG Compression)