My favourite is the Nikon 6mm F/2.8 Fisheye. A snip at $34,000. Stand behind that and you'll have Torchwood on your case! (For UK readers)
Cool article! I've owned one of those lenses, the Canon 50/0.95 (on a Canon 7). Not an easy lens to focus wide open, but it can see in the dark. A couple low light (~1/20s, f/0.95, XP2 rated at ISO 800) samples:
Regarding Amin's beautiful examples of his Canon 50mm f0.95 —*are these shot on the Canon RF? I always craved one of these for my M3. I am now considering the Voiglander 25mm f0.95 for use on my EP-2.
I have the 50/0.95 for the Canon 7, and it is amazing for a 50 year old lens. But with the price they go for, and the cost to convert to a Leica M3: Buy the Cosina/Voigtlander 50/1.1 Nokton instead. It is sharper wide-open, uses 58mm filters rather than 72mm filters, obstructs much less of the viewfinder. These days, the Canon with the cost of conversion runs $2000 and more. I paid $200 for mine when things were sane a few years ago. The Nokton at ~$1000 is a bargain. Some test pictures with the Nokton on the M8: http://www.seriouscompacts.com/gallery/showgallery.php?cat=552 If you've read Ken Rockwell's review of the 50/1.1 Nokton on the M9: Ha. The Nokton comes out of the box optimized for film. Should be fine on an M3. For digital- I built up the cam by 0.05mm for the M8. Focus is spot-on.
