Canon Mirror Lens 5200mm
From the specs:
Minimum object distance: 120 meters (400ft)
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Comments
Comment from Dan
Time: February 10, 2008, 12:20 pm
And… f/14? What good is that for taking photos of people in 18 mile-long darkened nightclubs? I suppose I’d also need a nuclear-powered flash!
Also, it calls itself 5200mm, but the specs say 5150. That’s a margin of error the size of my longest lens!
Comment from guy
Time: February 10, 2008, 11:11 pm
f/14 is a bit on the lame side, yes. Then again, a 5200mm/f1.2 would be about the size of the Hubble telescope, I reckon.
5200 just looks better than 5150, just as $1.99 looks better than $2.00. 
And what’s a mere 50mm on that scale ? Nuthing, I tell you, nuthing !
Comment from Dan
Time: February 11, 2008, 2:15 am
Speaking of f/1.2 and Hubble telescopes, I’m lusting the Canon 85mm 1.2. Used one a while ago, managed to put it to the back of my mind, but have just been looking at a friend’s photos using it. The bokeh on that thing is nice enough to eat.
Comment from keith
Time: March 6, 2008, 7:34 pm
How big is the Flash ?
Comment from d
Time: February 10, 2008, 11:26 am
Djee, this thing is huge. I wonder what the price ticket for something like this would be (if available for ‘normal’ users at all). A few million?