Cutaway of a Canon telephoto lens

I was at CES this week and saw this cutaway of an EF 200-400mm f/4L IS USM with built-in 1.4x extender. What a mouthful. Sorry for the lousy quality, I only carried my phone around for the show, and it's aging so it doesn't have a good camera itself. If anyone wants to see a full rez copy because you're curious to really see the nooks and crannies, just PM me.

I've seen a few of those cutaway lenses, but not one that big! I've even seen a Leica lens cutaway. Pretty cool!

Here's the Leica Distagon 15mm f2.8 cutaway.

thanks for sharing!
what a shame to sacrifice a totally good lens!

Very cool. Never seen those before. Easy to see you they cost so much.

Some real engineering goes into these things