Canon 35 f/1.4L

The 35L f/1.4 rightfully holds a spot in Canon's playfully nicknamed "Holy Trinity of Primes." This lens, along with the 85L f/1.2 and 135L f/2, delivers exceptional image quality in a relatively small package.  35mm is a fantastic focal length for a full-frame camera like the 5DII/III, slightly wider than a 50mm makes it a great walk-around lens.  When paired with a 1.6x crop-sensor camera like the 7D or 60D, it behaves more like a 50mm prime would behave on a full frame camera.  With a maximum aperture of 1.4, the 35L lets in 4 times as much light (2 stops) as an f/2.8 lens.  This is a great thing for wedding photographers, as they can tell you, sometimes light can be at a premium in super-dark churches and receptions.  The 35L's contrast and clarity are top notch, right on par with other Canon L series lenses.

Canon 35 f/1.4L