Cameras Ranked

20–50 Canon RF 20-50mm F4L IS USM PZ

The Canon RF 20-50mm F4L IS USM PZ is a zoom lens for Canon RF (Full frame) that covers 20-50 mm at f/4, weighs 420 g and focuses as close as 0.24 m. Widest view (20 mm) of the 3 full frame Canon RF zoom lenses in its focal range. Among them, it suits you if you carry it all day or travel light, you shoot in low light or want a blurrier background, or you want a wider view at the short end. If you want more reach at the long end, every other one that does better on reach gives up weight and width.

  • f/4widest aperture
  • 420 gweight
  • 17bodies it fits
To one scale. Canon RF 20-50mm F4L IS USM PZ: length 98.4 mm, diameter 79.9 mm, filter thread 67 mm.98.4 mmø79.9
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 20-50mm F4L IS USM PZ: length 98.4 mm, diameter 79.9 mm, filter thread 67 mm.98.4 mmø79.9
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

3 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
20-50 mm1
Widest aperture
f/41
Closest focus
0.24 m2
Maximum magnification
0.14x at 20 mm, 0.33x at 50 mm2
Stabilization
6 stops (in-lens)2
Mount
Canon RF2
Covers
Full frame
Type
Zoom
Weight
420 g2
Length
98.4 mm2
Diameter
79.9 mm2
Filter thread
67 mm2
On sale from
Jun 24, 20263
Elements
132
Groups
112
Aperture blades
92
Weather sealed
Yes2
Focus motor
2x Nano USM2
Hood
EW-73H (included)2

Sources

  1. Wikidata, checked Oct 9, 2026 (CC0 1.0)
  2. Canon product specifications, checked Oct 6, 2026
  3. www.usa.canon.com, cited by Wikidata for On sale from (Wikidata checked Oct 9, 2026; we didn't read this page)

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 17 rows
Full specificationsCanon RF 20-50mm F4L IS USM PZ2
Diagonal angle of view94°00′ to 46°00′ (Diagonal)
Horizontal angle of view84°00′ to 40°00′ (Horizontal)
Vertical angle of view62°00′ to 27°00′ (Vertical)
Closest focusing distance0.24/0.79
Lens construction11,13
Diameter and length79.9 × 98.4 (Approx.)
Drive system2x Nano USM
Filter size67
Max magnification at 20mm0.14x (f=20mm)
Max magnification at 50mm0.33x (f=50mm)
Minimum aperture22
Diaphragm blades9
Anti-dust and moistureAvailable
Weight420 (Approx.)
Included lens capLens Cap E-67 II & Lens Dust Cap RF (included)
Included lens hoodEW-73H (included)
Included lens bagLP1219 (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