If you own or have used this lens, let us know what you think! Leave your comments and thoughts below.
Get information and user reviews for this lens from Amazon: Canon EF 35mm f/1.4L USM Wide Angle Lens for Canon SLR Cameras 
Photo Zone:
The Canon EF 35mm f/1.4 USM L is highly regarded in the Canon community and it also shows in the lab. The resolution figures are exceptional and among the best tested so far. Typical for ultra-large aperture lenses vignetting is a little on the high side at wide-open aperture even on an APS-C DSLR but the issue remains correctable via imaging tools and stopping helps to resolves the issue if needed. CAs are a little on the high side unfortunately. Apart from the sheer lab related figures it’s simply pure fun to use the lens and the large aperture option is an inspiration for creative photography. The build quality is typical for a Canon L grade lens – simply superb. The EF 35mm f/1.4 USM L is not exactly a cheap lens but nonetheless – highly recommended. Normal 0 false false false EN-US X-NONE X-NONE READ FULL REVIEW
Other Canon 35mm f/1.4 USM L EF Reviews
SLRGear
The performance on sub-frame cameras is really stellar. Even wide open (which at f/1.4 is very wide indeed), this lens is only slightly soft, and only slightly more so in the corners, rapidly improving as you stop down. Chromatic aberration is modest, geometric distortion is low, at only 0.26% barrel distortion, and even shading (more commonly called vignetting) isn’t too bad, at 0.44 EV, once again decreasing rapidly as you stop down, dropping to less than 1/10 EV from f/2.8 onward. Build quality on this lens is also exceptional, as you’d expect from a Canon L-series lens selling for over $1,000. In fact, it’s hard to find any serious complaints about this lens: If you need this focal length and its f/1.4 speed, this is about as good as it gets. Read Full Review