[Leica] Unintentional Vignetting

[sonc.hegr at gmail.com (Sonny Carter)]

Ric, I think you?re correct, that?s why I asked if they were on different
trains.   One window may be safety, another tempered, another just dirty.

For example some safety glass might be slightly delaminated, causing what
appears to be vignetting.

The one truth I?ve realized in these sixty years of making pictures is that
if something wierd can happen, it will.


SonC



On Wed, Mar 14, 2018 at 6:00 PM CartersXRd via LUG <lug at leica-users.org>
wrote:

> i looked back through the more than several photos I've taken through
> train windows
>
> I?m pretty sure the splotchy effect is from schmutz on the window itself
> it is minimized by shooting wide open which is fine since most of the
> stuff you shoot that way is near infinity
> holding the lens in direct, full contact help minimize these
>
> many/most of mine are vignetted also
> I think there are two factors?I mostly shoot with wide lenses (since
> reaction times from a speeding train make reaction times VERY short) wide
> open in these circumstances which would vignette more
>
> also, many train windows have tinted safety layers in them. oblique rays
> seem to pick up more shading from the tinted saftey glass
>
> lighting conditions and differeing coach construction in different place
> could contribute to the locatioin variance
>
> but, I may well be wrong
>
> ric
>
>
>
>
> > On Mar 14, 2018, at 3:39 PM, Tina Manley via LUG <lug at leica-users.org>
> wrote:
> >
> > PESO:
> >
> > I'm running into a problem with some of the photos that I took from
> > train windows in Sweden.  I didn't notice it so much in Norway and I'm
> not
> > sure why it would be different in Sweden, but most of the photos taken
> > through the train window show a lot of vignetting:
> >
> > http://www.pbase.com/image/167141413
> >
> > I can get only around it by cropping a lot.  Any lightening that I try to
> > do just makes it look uneven.  It is not dependent on the camera or lens.
> > I get the same thing with the M240 and 35/2.
> >
> > Any ideas?
> >
> > Thanks,
> >
> > Tina
> >
> > --
> > Tina Manley
> > www.tinamanley.com
> > tina-manley.artistwebsites.com
> >
> http://www.alamy.com/stock-photography/3B49552F-90A0-4D0A-A11D-2175C937AA91/Tina+Manley.html
> >
> > _______________________________________________
> > 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

-- 
Regards,

Sonny
http://sonc.com/look/
Natchitoches, Louisiana
1714
Oldest Permanent Settlement in the Louisiana Purchase

USA