If my highschool science class had these Leica lens cutaways, it would have been heaven. I’d much rather dissect a Leica than a worm or pig. This lens was cut down the middle showing the actual glass elements and focus rings.
The lenses shown here are the Leica Tri-Elmar-M 28-35-50mm and the Leica 50mm f/1.4 Summilux M ASPH lens. If you’re interested in buying one of these for $995 they’re on eBay.