Archived posting to the Leica Users Group, 2007/09/11

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Subject: [Leica] Unsworth w33/now expos comp M8
From: don.dory at gmail.com (Don Dory)
Date: Tue Sep 11 16:07:08 2007
References: <C30A2BE8.F9FB%lug@steveunsworth.co.uk> <07E896C2-1F84-41D3-833D-7C123FC25190@cox.net>

Steve,
I know this was directed at Tina, but I have had good luck underexposing two
stops and bringing the image to what I think the values should be in
Lightroom.  Routinely, I underexpose 1/3 stop to keep from blowing the
highlights.  So, when shooting the M8, err on the side of underexposure; if
the historgram starts at 125 and goes to the left you still can have an
outstanding image.

On 9/10/07, Steve Barbour <kididdoc@cox.net> wrote:
>
>
> On Sep 9, 2007, at 3:02 PM, Steve Unsworth wrote:
>
> > Hi Tina, normally I'd agree with you, but the M8 used a non-linear
> > 14 (or is
> > it 12?) to 8 bit compression algorithm when writing the DNG files
> > that in my
> > understanding puts more of the 'bits' into the shadows than the
> > highlights.
> > So the old adage about exposing to the right doesn't work in the
> > same way
> > with the M8.
>
> let's us M8 users give it a whirl, does deliberate underexposure help
> or hurt... ?
>
> and report back please....
>
> Steve
>
>
> >
> > Steve
> >
> >
> > On 9/9/07 22:53, "Tina Manley" <images@comporium.net> wrote:
> >
> >> At 05:35 PM 9/9/2007, you wrote:
> >>> The M8 has a pretty big dynamic range, especially in the shadows.
> >>> Recently
> >>> I've started using the camera with compensation of -1/3 of a stop
> >>> to control
> >>> any possible highlight blowing.
> >>>
> >>> Steve
> >>
> >>
> >> Steve -  I used to do that, too, but after viewing a tutorial by Jeff
> >> Schewe about digital photography and color management, I'm having
> >> second thoughts.  He advises to be sure the histogram is balanced to
> >> the right.  He says that highlights contain much more recoverable
> >> information than shadows and that, even if the highlights look blown
> >> in the preview, they can be recovered in RAW files.  Overexposing
> >> slightly gives you much less noise in the shadows.  He says always
> >> bias the exposure as far as you can to the right without completely
> >> blowing out the highlights. The only time you shouldn't follow this
> >> advice is when using high ISOs because then you would just choose a
> >> lower ISO to get the same effect.  I haven't experimented with this
> >> enough to know how it works, but I'm going to try it.
> >
> >
> >
> > _______________________________________________
> > 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
>



-- 
Don
don.dory@gmail.com

Replies: Reply from luisripoll at telefonica.net (Luis Ripoll) ([Leica] Unsworth w33/now expos comp M8)
Reply from images at comporium.net (Tina Manley) ([Leica] Unsworth w33/now expos comp M8)
In reply to: Message from lug at steveunsworth.co.uk (Steve Unsworth) ([Leica] Steve Unsworth PAW - week 33)
Message from kididdoc at cox.net (Steve Barbour) ([Leica] Unsworth w33/now expos comp M8)