This lens is absolutely phenomenal on the 1D X! Super fast to focus, suffers from none of the focus shift I've heard about in the past. Works really well on my 7D, but doesn't have same DOF due to the APS-C sensor.

It is definitely an excellent lens. Sometimes I encounter back focus problem and I guess it is because the focus spot is too dark. Other than that, the color is incredibly bright and rich. No post-processing required.

Can take very good portraits; Color is very rich and bright

Price is too high; Get fuzzy pictures easily in a slightly dark place.

Canon's EF 50mm f1.2L USM is a prime lens with a standard focal length of 50mm and the joint-fastest focal ratio in the Canon lens catalogue - a position shared with the EF 85mm f1.2L USM.

I'm a photographer by profession. I've used 50mm primes from Canon, Nikon, Sony, Pentax, Olympus and Sigma. But nothing can even come close to what this lens can do. Pros: 1. Super fast focusing 2. Silent while focusing 3. Extremely sturdy 4. The most important thing. F1.2 man!

Canon visar ännu en gång att deras L optik är i världs klass. Super fina resultat i starkt skarpa bilder.

Super fin optik; Riktigt bra fokus och ett skarpt resultat

Priset är det ända negativa jag kan hitta med detta objektivet

If you are looking for a 50mm lens with beautiful bokeh, good contrast/color at wide open, and you want to use f1.2, for low light photo AND video, this is the one for you.

Beautiful Color; Durable; Fast / accurate auto-focus; Grea Picture At Wide Open; Nice Bokeh; Rugged

Expensive; Sometimes Miss The Focus

this lens allows you to enter a whole new world of photography, night photography without flash. i have tried both the 24-70L and the 17-55m and felt very limited once the sun starts to set or moving in doors. IQ is stunning, especially the colors.

-sharp; sharp; sharp ( between 1.4- 2.8) -construction is top notch -bokeh is silky smooth (was never a priority in the past for me; but after seeing the results thats all i think about -superb in low light situations

-price; price; price (will not be buying any new lens soon; but maybe i will not have to with this lens) -attention getter (might be a pro for others

Yes it is expensive but you really won't remember that once you use the lens. The speed allows for many more good shots without the use of any flash. Highly recommended.

Consistent Output; Durable; Easily Interchangeable; Quick Focus; Rugged; Sharp Focus; Strong Construction

Expensive; Heavy

I've been putting off purchasing this lens for a while because of it's back focus (focus shift) problem which occurs only when photographing at extremely close distance using the center focus point of the camera.

Upgraded from the 50mm 1.4. Love love love this lens. Pictures are always sharp unlike the 50mm 1.4 which is very soft at 1.4 to 1.8. A Necessary evil I shoot a wide variety of subject matter for my work and, because I exclusively use full frame Canon bodies and always try to use prime lenses, a...