[OM] The end of onion-ring bokeh? Panasonic beats the curse of aspheric lenses,

[Mike Gordon via olympus]

There are also others causes of onion ring bokeh--see.

http://toothwalker.org/optics/bokeh.html

I don't know how often lenses with magnetorheological finishing type  
polishing get into commercial lenses
but that can eliminate irregularities down to way sub lambda levels and 
has been performed for a number of years.
Aspherics  do seem to impart other  characteristic rendering signatures 
depending on the placement of the elements but I've never read any  
consistent generalizations of exactly how that happens and why.
Onion rings have too much oil anyway, Mike
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/