Canon EF 50mm f/1.4 USM Lens for $339 – Deal Alert January 22, 2014 By Eric Reagan B&H has the Canon EF 50mm f/1.4 USM lens for $339 (reg. $399) with free shipping and 2% rewards. I have this lens and love it. It has been a solid lens over the years and is well worth this sale price. Check it out here at B&H Photo.