Archived posting to the Leica Users Group, 2008/12/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Leonard Taupier wrote: > The problem is not with the M8 or lack of UV/IR filters. > Here is a photo taken with the 560mm Telyt and Canon 20d. Note the > out of focus edges behind the bird. I see this all the time with this > lens when shooting against a bright background. These lenses should > not have CA according to Erwin. But I think it's the lens. I just > don't know what. > > http://tinyurl.com/842ajl Note the color fringe on the top of the ram's nose & muzzle (this was with the 560): http://www.wildlightphoto.com/mammals/artiodactyls/dash01crop.jpg I suspect it's a chromatic artifact of spherical aberation. Makes color fringes at high-contrast out-of-focus edges. Did anyone notice it on their 2008 calendar? The f/6.8 Telyts are still among my favorites despite this artifact. Doug Herr Birdman of Sacramento http://www.wildlightphoto.com -------------------------------------------------------------------- mail2web.com ? What can On Demand Business Solutions do for you? http://link.mail2web.com/Business/SharePoint