08-14-2013, 10:36 PM
This isn't so much of a surprise and one of the reasons why I'm also not positive about IS for instance. Other than adding even more elements, it adds complexity - especially on zoom lenses.
IS-less lenses show, on the average, a lesser tendency towards centering defects.
It is obvious:
Canon 70-200/2.8 IS II: 23 elements
Canon 70-200/2.8: 18 elements
Canon 70-200/4 IS: 20 elements
Canon 70-200/4: 16 elements
IS-less lenses show, on the average, a lesser tendency towards centering defects.
It is obvious:
Canon 70-200/2.8 IS II: 23 elements
Canon 70-200/2.8: 18 elements
Canon 70-200/4 IS: 20 elements
Canon 70-200/4: 16 elements