Archived posting to the Leica Users Group, 2013/11/20
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Ok. Never mind. On 11/20/13 7:08 PM, "George Lottermoser" <george.imagist at icloud.com> wrote: > > On Nov 20, 2013, at 5:19 PM, Mark Rabiner wrote: > >> George we both know that over the decades many of the really finest wides >> give you noticeable vignetting wide open there was a burgeoning market >> for >> center filters costing 2 or 3 hundred bucks which everybody bought without >> even thinking and many were sold with the filters included. >> The fact is light has to travel way longer to reach the corners of the >> image >> than in the center. Even true with retrofocal wides but classic for >> symmetrical designs. >> >> And then there's shooting a landscape wide open with an ultra wide that's >> an >> eyebrow raiser right there. Landscape photography is not street >> photography >> with the light poles being trees. >> Stopping down is a first thought as is using a tripod. >> >> That fact that all vignetting goes away when you stop down a few is very >> heartening for this guy. >> Personally I like vignetting- I would buy an edge darkening filter if >> they >> made one. > > If you download the full files > and examine them > you'll see that it's not simply a light fall-off, dark corner vignette > issue. > > The corners are grossly out of focus and smeared. > And we're looking at and talking about a 35 mm lens > not a 28, 24, 21, 18, 16 or 12 here. > > So far the optical results of Leica 50 mm and wider > are simply coming in as unacceptable > (when compared to the same lenses used on an M9, MM or M) > > To buy premium f:1.4 lenses > and not be able to use them until f5.6 and 8 > and see diffraction at f: 8 > does not make the A7r desirable for use with Leica glass. > > It may work extremely well with the Zeiss glass > and some of the longer Leica glass > > though that's not my only interest > as most of my M shooting is with 28 cron asph and 50 lux asph > > So this is a simple fact. > > YMMV OF COURSE > > Regards, > George Lottermoser > george at imagist.com > http://www.imagist.com > http://www.imagist.com/blog > http://www.linkedin.com/in/imagist > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information -- Mark William Rabiner Photographer http://gallery.leica-users.org/v/lugalrabs/