Cameras Ranked

1200 Canon RF 1200mm F8 L IS USM

The Canon RF 1200mm F8 L IS USM is a prime lens for Canon RF (Full frame) that covers 1200 mm at f/8, weighs 3340 g and focuses as close as 4.3 m.

  • f/8widest aperture
  • 3340 gweight
  • 17bodies it fits
To one scale. Canon RF 1200mm F8 L IS USM: length 537 mm, diameter 168 mm, filter thread 52 mm.537 mmø168
To scale from the maker's length and diameter, the mount on the left and the filter thread in yellow at the front. The rings are drawn, not measured.

Compare it with another lensAll Canon RF lenses

To one scale. Canon RF 1200mm F8 L IS USM: length 537 mm, diameter 168 mm, filter thread 52 mm.537 mmø168
To scale from the maker's length and diameter, the mount on the left and the filter thread in yellow at the front. The rings are drawn, not measured.

Bodies it fits

17 bodies

All cameras, by maker and mount

Specifications

Focal length
1200 mm1
Widest aperture
f/82
Closest focus
4.3 m3
Maximum magnification
0.29x3
Stabilization
4 stops3
Mount
Canon RF3
Covers
Full frame
Type
Prime
Weight
3340 g3
Length
537 mm3
Diameter
168 mm3
Filter thread
52 mm3
Elements
263
Groups
183
Aperture blades
93
Weather sealed
Yes3
Focus motor
Ring USM3
Hood
ET-160 (WIII) / ET160B (sold separately)3
Extenders
Extender RF 1.4x, Extender RF 2x3

Sources

  1. Wikidata, checked Oct 9, 2026 (CC0 1.0)
  2. www.canon.at, cited by Wikidata for Widest aperture (Wikidata checked Oct 9, 2026; we didn't read this page)
  3. Canon product specifications, checked Oct 6, 2026

Worked out by code, not stated by a source

  • Read from the lens name: each maker marks the sensor size a lens covers (Sony FE/E, Canon RF/RF-S, Nikon DX, Tamron Di III/Di III-A, Sigma DG/DC); every Fujifilm X lens is APS-C and every Micro Four Thirds lens is Four Thirds.
  • Prime or zoom, read from the focal length in the lens name.

Each value is checked automatically against the source it links, on the date shown. How we build these pages

† The makers' own tables, row by row, with labels in our plain words (translated where the maker's page isn't in English); each row's numbers are checked against the page it links.

Full specifications†

Show all 16 rows
Full specificationsCanon RF 1200mm F8 L IS USM3
Diagonal angle of view02°05′ (Diagonal)
Horizontal angle of view01°45′ (Horizontal)
Vertical angle of view01°10′ (Vertical)
Closest focusing distance4.3 / 14.1
Lens construction18,26 (Groups Elements)
Diameter and length168 × 537 (Approx.)
Drive systemRing USM
Filter size52 (drop-in filter)
Max magnification0.29
Minimum aperture64
Diaphragm blades9
Anti-dust and moistureYes
Weight3340 (Approx.)
Lens capE-185C
Lens hoodET-160 (WIII) / ET160B (sold separately)
Lens bagLS1200