Archived posting to the Leica Users Group, 2009/04/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Douglas, are you using the UV/IR as well? If so you may be seeing cyan edges, unintentionally introduced by the UV/IR. Or are you describing light fall off towards the edges? Coding (and of course the right menu selection) will certainly reduce vignetting with your wide and eliminate cyan edges. I think that a 21 is an ideal candidate for coding whichever model you have. You can evaluate this for yourself though with some temporary coding and test shots if you wish. A white wall makes the effects most obvious. Be very careful if you are applying temporary coding. Personally I don't recommend it, although others have said that they have had no problems. There is a risk of ink being dislodged onto the detector window or worse, the sensor. 2009/4/25 Douglas Nygren <dnygr at cshore.com> > I have been using a pre-Asph 21mm Elmarit on the M8 and notice on the edges > a subtle shift to light blue. > > My assumption is that this may be caused by vignetting, but I may be wrong. > Has anyone else noticed it. > > A friend suggested that having the lens coded for the M8 might cure this > problem. Does anyone know whether that is true or not? > > My friend maintains that coding helps wide-angle lenses. True? > > I assume the Asph 21 does not have this problem, but that's an assumption. > > Your help is appreciated, as always. > > Doug > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- Cheers Geoff 'Breathe In, Breathe Out, Move On' http://gallery.leica-users.org/v/gh/a/ http://www.pbase.com/hoppyman