« on: December 16, 2014, 06:39:09 AM »
The only elements that would be smaller are the small elements nearest the camera. The largest grouping would be the same. on lenses longer than 50 or 60 mm it makes a hardly recognizable difference.
Telephoto yes, wide angle no. Just look at EF 24 2.8 and EF-s 24 2.8. The EF-s one is actually a 38 equivalent FoV one so it's narrower and a lot smaller.
Using a 70-200 on crop would be less wasteful than using a 16-35