Richard CanonNews / Monday, February 19, 2018 / Categories: Reviews, Third Party Reviews This post may contain affiliate links(s). An affiliate link means I may earn advertising/referral fees if you make a purchase through my link, without any additional cost to you. It helps to keep this site afloat. Thank you in advance for your support. If you like what we do here, maybe buy me a coffee. Is 40mm the best focal length? Kai thinks so.. In another video, Kai goes through the the diminutive 40mm pancake lens by Canon. A lens that is super cheap and super good. It should really be part of any Canon kit. The 40mm at a glance; EF-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 One Aspherical Element Super Spectra Coating STM Stepping Motor for Smooth, Silent AF Rounded 7-Blade Diaphragm Richard CanonNewsRichard CanonNews Richard has been using Canon cameras since the 1990s, with his first being the now legendary EOS-3. Since then, Richard has continued to use Canon cameras and now focuses mostly on infrared photography. Richard is the founder and editor of CanonNews since 2017, and has worked as a writer on CanonRumors and other websites in the past. Other posts by Richard CanonNews Contact author Facebook page Print Please login or register to post comments.