I believe the old 1200 lens sold for over $100,000.00.I like how they describe it as a cannon. It's not, although for those used to the prosumer market it seems like it. They should see a 600mm, or even one of those rare 1200mm lenses =D
I'd be curious to see what a modern-day EF 1200mm f/5.6 L IS II lens looked like, and what kind of IQ it provided. I suspect it might barely border on "hand holdable" (i.e. like the old 600mm f/4 L) if it used todays fluorite elements and titanium/magalloy body. The 600mm f/4 L IS II with a 2x TC still offers STUNNING IQ. I can't imagine what a native 1200mm lens comparable to Canon's current-day IQ would be like. And, you'ed get 1680mm out of it with a 1.4x TC!
If they can ever get those diffractive optics to start delivering, you might actually be able carry it. Hopefully with some 6 or 8 stop IS. At 1200mm you'll need it!
Good idea. But wouldn't a modern 1200mm lens cost over $20k, given Canon's cost structure for superteles? Maybe not, since it's a little more limited in its usefulness due to the narrow field of view...not many sports pros would use it.
Which makes a $20k price tag, especially for a hand-holdable 1200mm DO, rather appealing!