Archived posting to the Leica Users Group, 2012/12/01

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Subject: [Leica] I'd like to know what the "vertical line" is
From: richard at richardmanphoto.com (Richard Man)
Date: Sat, 1 Dec 2012 21:15:10 -0800
References: <BLU155-W220C84B12736534201242D8D420@phx.gbl> <CAF8hL-G8Ka5EgGP6Et4pKPpqF1kge+Hqv9H+O6k4PDy2VjkLTQ@mail.gmail.com> <20121201235220.0a52d79e@linux-mh41.site>

I stand corrected then. I didn't realize such problem exists :-)


On Sat, Dec 1, 2012 at 8:52 PM, Phil Forrest <photo.forrest at 
earthlink.net>wrote:

> Richard,
> That's not a sensor bloom problem, that's a sensor hardware problem. I
> had the same issue and Leica NJ replaced the sensor in the M9 last
> January.
> And that is a horizontal line issue you show there. ;)
>
> The vertical line issue that is so prevalent in Leica sensors is one of
> two:
> The vertical split in the very center of the image where you can see
> differences in exposure between the two halves of the image. Usually
> seen in very under exposed images and usually not a problem
>
> The vertical line that eventually radiates from a hot pixel. Usually
> seen at high ISOs but eventually creeps down to 160 making every image
> either hard to correct or unusable.
>
> Phil Forrest
>
>
>
> On Sat, 1 Dec 2012 07:24:48 -0800
> Richard Man <richard at richardmanphoto.com> wrote:
>
> > Some sensors when photographing a bright source, e.g. a light bulb,
> > may cause a vertical line to appear. It shows up rarely on the M9:
> > http://richardmanphoto.com/PICS/20121124-L1017479.jpg
> >
> > Whereas the picture taken just slightly different angle or something
> > does not show it:
> > http://richardmanphoto.com/PICS/20121124-L1017478.jpg
> >
> >
> >
> > On Sat, Dec 1, 2012 at 7:04 AM, Jean-Michel Mertz <j2m46 at hotmail.fr>
> > wrote:
> >
> > >
> > >
> > >
> > >
> > > Hi Luggers,In recent posts a few of you mentioned "the vertical
> > > line" as being a defect often found on M8 captors. How can I
> > > possibly know I've got this disease?Jean-Michel
> > >
> > > _______________________________________________
> > > Leica Users Group.
> > > See http://leica-users.org/mailman/listinfo/lug for more information
> > >
> >
> >
> >
>
>
>
> --
> http://philipforrestphoto.wordpress.com/
> http://gallery.leica-users.org/v/philforrest
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>



-- 
// richard <http://www.richardmanphoto.com>


In reply to: Message from j2m46 at hotmail.fr (Jean-Michel Mertz) ([Leica] I'd like to know what the "vertical line" is)
Message from richard at richardmanphoto.com (Richard Man) ([Leica] I'd like to know what the "vertical line" is)
Message from photo.forrest at earthlink.net (Phil Forrest) ([Leica] I'd like to know what the "vertical line" is)