Bokeh fanatics, you read that right! This lens opens to an insanely wide f/0.75. If you are a fan of backgrounds being blown to smithereens, this might be the ultimate lens. Check out the unique look this 65mm f/0.75 lens creates.
Coming to you from Mathieu Stern, this neat video shows the kind of footage you can get using a 65mm f/0.75 lens. Before you head over to B&H, this is not a photography lens; it is actually used for x-ray machines, but it can be adapted for use with consumer cameras with a few limitations (most such lenses have a fixed aperture and fixed focal distance). For those of you interested in the math, f/0.75 is 0.83 stops faster than the already crazy f/1 and a whopping 1.8 stops faster than an f/1.4 lens. Believe it or not, there is actually precedent for lenses like this: Stanley Kubrick used several Carl Zeiss Planar 50mm f/0.7 adapted from NASA for filming candlelit scenes in "Barry Lyndon." I bought one on eBay several years ago, and while it was certainly not practical for any sort of real work, it was a ton of fun to play with. Check out the video above to see the lens in action.