Canon EF 400mm f/4 DO IS II USM EF400mm f/4 DO IS II USM Instructions - Page 4

Usage Precautions OO When using this lens, please check the Canon website for the latest camera firmware. If the camera's firmware is not the latest version, be sure to update to the latest firmware. OO For details on updating firmware, please check the Canon website. Shooting Precautions As a characteristic of the diffractive optics with this lens, colored flare may occasionally appear around the light source depending on shooting conditions. OO For scenes where a light source is inside the screen, colored flare may occasionally appear as a halo of light around the light source or appear fanning out from the light source. OO For scenes where a light source is outside the screen, colored flare may occasionally appear partially inside the screen. You can reduce or prevent these issues with the following steps according to the scene you are shooting. • Attach a lens hood. • Use your hand or paneling, an umbrella, etc. to block the light source and placed so that they do not appear in the screen. ENG-3