Back in the mid-70s Nikon made a 6/2.8 fisheye lens that captured a 220° circular image, which is 40° wider than the standard-issue 180° fisheyes manufactured today. Weighing in at 11 lbs, it had a front element the shape and size of a small goldfish bowl (9.3") and all-but-dwarfed the Nikon F hanging off the back of it. You could actually see behind the camera. And it could be had for about $13,500 in 1975 Yankee dollars.
Fast forward 35 years and I find myself palming a , a sub-compact bridge camera with a 9.1Mp Super Exmor CMOS sensor (1/2.4"), full-res burst-rates of up to 10 fps, a 20x Sony G-series optically-stabilized zoom lens, and a long list of features you'd expect to find nowadays on bridge-style digicams.