Quote Originally Posted by Dave Johnston View Post
Ahh.
I suppose it was the "smooth-tight" thing on the side of the proposed images that threw me off.
Yes, tension can still be adjusted, meaning the zoom can be locked at any focal length. I've seen an image of the lens extended, looks just like the 70-300L, there's no where to grab to push-pull except the lens hood. Another clue is the ribbing on the rubber rings – note how on the original the push-pull ring has 'transverse' ribbing for grip friction along the lens axis, the direction of the push-pull. The images of the new lens show all the ribbing oriented to provide grip friction during rotation of the ring.