Canon RF-S3.9 mm F3.5 STM DUAL FISHEYE Instructions Manual page 9

2. Attaching and Detaching the Lens Cap
This lens projects out past the front frame. To protect the lens, use the special lens cap when not
taking photos.
Attaching the Lens Cap
Attach (2) while squeezing the levers (1) on the
inner sides of the cap.
Detaching the Lens Cap
Detach (2) while squeezing the levers (1) on the
inner sides of the cap.
After detaching the lens cap, do not touch the
z
lens surface or allow it to come into contact with
its surroundings.
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