| Year | 1973 |
| Lens Groups | 5 |
| Lens Element | 7 |
| Aperature Blades | 8 |
| Minimum Aperture | f/16 |
| Closest Focusing | 0.6 m |
| Max. Magnifcation | 1:9.2 (0.109x) |
| Filter Size | 58 mm |
| Diameter x Length | 75.8 x 52.5 mm |
| Weight | 510 gr (1.12 lb) |
| Hood | BS-58 |
This one has been in my collection of classic 50's for a couple of years and is a favorite. While it doesn't capture the same level of attention as some of the other more renown 50's, it's still a ton of fun to use. The build quality is beyond reproach, nothing buy metal and glass, the thing just feels solid. Wide open, there is a glow due to low contrast and resolution or some other aberrations I'm not really qualified to talk about - this definitely gives the photos a vintage look to them. Stop the lens down a bit and image will become sharp and contrasty enough for most - actually kind of fun to have this much variability in a lens. Colors are fantastic and saturated, but the lens does B&W quite well too. Bokeh is of the bubble variety and can be distracting at times if there is a busy out-of-focus background (like a bunch of trees) when you are focusing on something at mid or longer distance. For closer distances, the bokeh is quite buttery particularly when using a close-focus adaptor or extension tube. If you're looking at getting into these old manual lenses and want that fast aperture this one won't disappoint, at around $350 for a good copy, this might be your ticket. I have several Flickr albums dedicated to Canon's old lenses - here is the location for this beauty!
https://www.flickr.com/photos/83792268@N03/albums/72157662474029203