Full Frame Glass
FESony E278ZNikon Z141RFCanon RF96

Sony E-mount lenses

  • 7Artisans
  • Laowa
  • Samyang (Rokinon)
  • Sigma
  • Sirui
  • Sony
  • Tamron
  • Viltrox
  • Voigtländer
  • Zeiss
  • Ultra-Wide
  • Wide
  • Standard
  • Short Telephoto
  • Telephoto
  • Super-Telephoto
  • Macro

Nikon Z-mount lenses

  • 7Artisans
  • Laowa
  • Nikon
  • Samyang (Rokinon)
  • Sirui
  • Tamron
  • Viltrox
  • Voigtländer
  • Ultra-Wide
  • Wide
  • Standard
  • Short Telephoto
  • Telephoto
  • Super-Telephoto
  • Macro

Canon RF-mount lenses

  • 7Artisans
  • Canon
  • Laowa
  • Samyang (Rokinon)
  • Viltrox
  • Voigtländer
  • Ultra-Wide
  • Wide
  • Standard
  • Short Telephoto
  • Telephoto
  • Super-Telephoto
  • Macro

Full Frame Glass

Native full-frame mirrorless lenses only: no crop lenses, no adapted glass. Specifications, MTF charts and product images come from manufacturer publications and are credited on each page.

  • About & methodology
  • Affiliate disclosure
  • Privacy
  • Terms
  • Contact
  • © Full Frame Glass
Register/Compare

Canon RF 16-28mm F2.8 IS STM vs Canon RF 20mm F1.4 L VCM

Key differences

  • —The RF 16-28mm F2.8 IS STM is 74g lighter (445g vs 519g).
  • —The RF 20mm F1.4 L VCM is faster: f/1.4 vs f/2.8 (≈2.0 stops more light).
  • —At launch the RF 16-28mm F2.8 IS STM cost $550 less ($1,149 vs $1,699).
  • —For close-ups the RF 16-28mm F2.8 IS STM reaches 0.26× vs 0.19×.
Canon
RF 16-28mm F2.8 IS STM
Canon RF 16-28mm F2.8 IS STM
Canon
RF 20mm F1.4 L VCM
Canon RF 20mm F1.4 L VCM
16842L
Mount
Canon RF
Canon RF
Focal length
16–28mm
20mm
Max aperture
F2.8
F1.4◆
Weight
445g◆
519g
Dimensions ⌀ × L
76.5 × 91.0mm
76.5 × 99.3mm
Volume
418 cm³◆
456 cm³
Density
1.06 g/cm³
1.14 g/cm³
Filter thread
⌀67mm
⌀67mm
Min focus
0.20m
0.20m
Max magnification
0.26×◆
0.19×
Elements / groups
16 / 13
15 / 11
Aperture blades
9
11◆
Focus drive
Lead-screw STM
VCM
Stabilisation
Yes
—
Weather sealed
Yes
Yes
Aperture ring
—
Yes · de-click
Released
2025
2025
MSRP (USD)
$1,149◆
$1,699
Sharpness
8.2
9.1◆
Bokeh Rendering
7.4
8.4◆
Autofocus Speed
8.4
8.9◆
Flare Resistance
7.5
7.8◆
Build / Sealing
7.6
9.0◆
Value / Size
8.0◆
7.2
SHARPBOKEHAFFLAREBUILDVALUE

Performance overlay

  • RF 16-28mm F2.8 IS STM
  • RF 20mm F1.4 L VCM

◆ marks the best value in a row. Scores are 0–10 editorial ratings.