Outdoor Photo Gear reviewed the huge Canon EF 1200mm 5.6 L Supertelephoto Lens ($120,000 at B&H!)
The 1200mm lens is huge – 36lbs, 33″ long and 9″ wide at the front element!
For the record, the Canon 1200/5.6L USM contains 13 elements (including 2 Fluorite) in 10 groups, stops down to f32, and has a minimum focus of 45.9′. As for filtration, 48 mm drop-in filters can be inserted towards the aft section of the lens barrel. And before you start kvetching ‘it’s not an IS lens’ keep in mind this hefty pup demands the sturdiest tripod and pan/tilt head you can muster up. An EOS Mark III mounted on this thing looks like a rear lens cap with handle bars. Folks, we’re talking big here… really big.