« on: October 12, 2013, 02:35:10 PM »
The 70-300 (non-L) is known to be fairly soft at 200mm and longer.
This is the length and width of it. Sold mine, got the 70-200/4IS instead - because it has the same usable range as the 70-300 non-L. You really don't want to shoot at 300mm with this lens and yes, that's a structural problem. All L-telezooms are in a totally different league. Ditch this lens.