09-13-2016, 11:54 AM
(This post was last modified: 09-13-2016, 11:56 AM by Brightcolours.)
New lens will have nano USM like the 18-135mm USM, it will have 17 elements in 12 groups (old lens 15 elements in 10 groups), 710 grams (old lens 630 grams), MFD 1.2 meters (old lens 1.5 meters).