Great lens, that's very large for a prime lens, and pricey.
19 July 2011
Summary: This review is for 24mm 1.4 II version. I love the pictures taken with this lens. I shoot almost everything at 1.4 f-stop and the pics are saturated, contrasty and very sharp. I don't like it's large size, it's bigger than most zoom lens. So not that portable. And of course the lens is pricey.
Summary: This here is the BEST 24mm you will find in the world. Having a maximum aperture of 1.4 is VERY useful in low light and great for subject isolation. My only problem is that it had a bit of a front focus problem but I sent that to Canon for recalibration free of charge.
Pros: Durable, Fast / accurate auto-focus, Nice Bokeh, Strong Construction
Summary: This is the best 24mm lens I have used and this purchase is my 2nd copy. It is not perfect - but no 24mm is. It EXCELLED at street art (painted walls) in Bogota... excellent color rendering...sharp...not much distortion. The only thing I don't like with this lens is that in some situations the bokeh is kind of jiggley or neurotic to my eye. Like with strongly backlit subjects when the subject is up close.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Rugged, Strong Construction
Summary: This is an excellent lens from Canon which is pretty sharp wide open, but blisteringly good from f4. I use it on a clasic 5D. Vignetting is a problem at 1.4 which is only to be expected, but dramatically improves at f2, virtually unnoticeable from f4. I've compared this to the 24-70mm 2.8 at 24mm. Vignetting is better with the zoom but the extra exposure advantage of the prime does make a big difference.