Canon RF 10-20 mm f4L IS STM vs Canon RF400mm F2.8 L IS USM

Key differences

The Canon RF400mm F2.8 L IS USM has 2.25 m more closest focusing distance than the Canon RF 10-20 mm f4L IS STM (2.5 m vs 0.25 m). The Canon RF 10-20 mm f4L IS STM has 1.2 more maximum aperture number than the Canon RF400mm F2.8 L IS USM (4 vs 2.8). The Canon RF400mm F2.8 L IS USM has 10 more minimum aperture number than the Canon RF 10-20 mm f4L IS STM (32 vs 22). Component for: MILC on the Canon RF 10-20 mm f4L IS STM, SLR on the Canon RF400mm F2.8 L IS USM. Lens structure (elements/groups): 16/12 on the Canon RF 10-20 mm f4L IS STM, 17/13 on the Canon RF400mm F2.8 L IS USM.

• Component for
  • RF 10-20 mm f4L IS STM:MILC
  • RF400mm F2.8 L IS USM:SLR
• Lens structure (elements/groups)
  • RF 10-20 mm f4L IS STM:16/12
  • RF400mm F2.8 L IS USM:17/13
• Lens type
  • RF 10-20 mm f4L IS STM:Wide zoom lens
  • RF400mm F2.8 L IS USM:Super telephoto lens
• Lens viewing angle, horizontal
  • RF 10-20 mm f4L IS STM:121° 55' - 84°
  • RF400mm F2.8 L IS USM:5.3°
• Lens viewing angle, vertical
  • RF 10-20 mm f4L IS STM:100° 25' - 62°
  • RF400mm F2.8 L IS USM:3.3°
• Closest focusing distance
  • RF 10-20 mm f4L IS STM:0.25 m
  • RF400mm F2.8 L IS USM:2.5 m
• Maximum aperture number
  • RF 10-20 mm f4L IS STM:4
  • RF400mm F2.8 L IS USM:2.8
• Minimum aperture number
  • RF 10-20 mm f4L IS STM:22
  • RF400mm F2.8 L IS USM:32