Canon EF 100-400mm f/4.5-5.6L IS II USM Lens Now In Stock March 12, 2015 By Eric Reagan B&H has the new Canon EF 100-400mm f/4.5-5.6L IS II USM lens in stock again. It has been in high demand since its release, so if you’ve been waiting for one, you can get it now. Check it out here at B&H Photo.