Cameras Ranked

28–70 Canon RF 28-70mm F2.0 L USM

The Canon RF 28-70mm F2.0 L USM is a zoom lens for Canon RF (Full frame) that covers 28-70 mm at f/2, weighs 1430 g and focuses as close as 0.39 m. Brightest (f/2) of the 7 full frame Canon RF zoom lenses in its focal range. Among them, it suits you if you shoot in low light or want a blurrier background. If you carry it all day or travel light, you want more reach at the long end, you want a wider view at the short end, or your body has no in-body stabilization or you shoot handheld video, every other one that does better on weight, reach, width, or stabilization gives up brightness.

  • f/2widest aperture
  • 1430 gweight
  • 17bodies it fits
To one scale. Canon RF 28-70mm F2.0 L USM: length 139.8 mm, diameter 103.8 mm, filter thread 95 mm.139.8 mmø103.8
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 28-70mm F2.0 L USM: length 139.8 mm, diameter 103.8 mm, filter thread 95 mm.139.8 mmø103.8
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.

Where it sits

7 lenses

Full frame Canon RF zoom lenses in its focal range that state each value, this one included. Each tick is one; the thick one is this one.

Bodies it fits

17 bodies

All cameras, by maker and mount

Specifications

Focal length
28-70 mm1
Widest aperture
f/21
Closest focus
0.39 m2
Maximum magnification
0.18x2
Stabilization
No
Mount
Canon RF2
Covers
Full frame
Type
Zoom
Weight
1430 g2
Length
139.8 mm2
Diameter
103.8 mm2
Filter thread
95 mm2
Elements
192
Groups
132
Aperture blades
92
Weather sealed
Yes2
Focus motor
Ring-type USM2
Hood
EW-103 (included)2

Sources

  1. Wikidata, checked Oct 9, 2026 (CC0 1.0)
  2. 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.
  • Read from the lens name: Sony marks optically stabilized lenses OSS, Canon IS, Nikon VR, Fujifilm OIS, Panasonic O.I.S., Tamron VC and Sigma OS; a lens from these makers without the mark has no optical stabilization.
  • 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 28-70mm F2.0 L USM2
Diagonal angle of view75°00′– 34°00′ (Diagonal)
Horizontal angle of view65°00′– 29°00′ (Horizontal)
Vertical angle of view46°00′– 19°30′ (Vertical)
Closest focusing distance0.39 m / 1.28 ft
Lens construction13-19 (Groups Elements)
Diameter and length103.8 x 139.8 mm (Approx.)
Drive systemRing-type USM
Filter size95 mm
Maximum magnification0.18 x
Minimum aperture22
Diaphragm blades9
Anti-dust and moistureSupported
Weight1430 g (Approx.)
Included lens capLens Cap E-95 & Lens Dust Cap RF (included)
Included lens hoodLens Hood EW-103 (included)
Included lens caseLens Case LP1424 (included)

How the pick works

  1. Widest aperture3

    Lower wins once they are 0.3 apart.

  2. Weight2

    Lower wins from a 12% gap.

  3. Focal length (longest)2

    Higher wins from a 15% gap.

  4. Focal length (widest)2

    Lower wins once they are 2 mm apart.

  5. Optical stabilization1

    Having it wins.

  6. Closest focus, wide end1

    Lower wins from a 15% gap. Compared only between lenses of the same focal length (widest).

  7. Filter thread0.5

    Lower wins once they are 5 mm apart.

  8. Lead for a pick1

Our pick or our take adds up the importance of each real difference, with these importances and thresholds: a gap smaller than its row's threshold is too close to call and counts as the same. They are our editorial choice, not a measurement, the same on every page, and they never read prices, sales or who sells it.

Paid placements0

How we rank, in full