Review on Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras by Micha Jelonek ᠌

Without an option choice for an amateur, Its pros: Great picture quality! Firm, expensive canon drawing! For a photo, a very convenient focal length on a crop, quiet enough, it is not inferior, and sometimes even superior (canon 28mm 1.8) to much more expensive lenses 10-18 Definitely better than any zoom price less than 20 Cons below: The tube extends when focusing at 2-9mm, which of course will in dust, on the 650th canon)