View Single Post
Old 03/24/2011, 02:01 PM   #42
BlueCorn
Retired
 
BlueCorn's Avatar
 
Join Date: May 2002
Posts: 32,908
I believe that's internal focus. When you look at the specs on the Sigma 105 they mention dimensions and extended dimensions. The 150 only lists one dimension.


__________________
Doug

[I]Dodging and burning are steps to take care of mistakes God made when establishing tonal relationships. ~ Ansel Adams[/I]
BlueCorn is offline   Reply With Quote