Canon RF 20-50mm F4 L IS USM PZ vs Laowa Argus 28mm f/1.2 FF (Canon RF)
Key differences
- —The RF 20-50mm F4 L IS USM PZ is 142g lighter (420g vs 562g).
- —The Argus 28mm f/1.2 FF (Canon RF) is faster: f/1.2 vs f/4 (≈3.5 stops more light).
- —At launch the Argus 28mm f/1.2 FF (Canon RF) cost $800 less ($599 vs $1,399).
- —The Argus 28mm f/1.2 FF (Canon RF) is manual focus only.
- —For close-ups the RF 20-50mm F4 L IS USM PZ reaches 0.33× vs 0.07×.
- Mount
- Canon RF
- Canon RF
- Focal length
- 20–50mm
- 28mm
- Max aperture
- F4
- F1.2◆
- Weight
- 420g◆
- 562g
- Dimensions ⌀ × L
- 79.9 × 98.4mm
- 68.5 × 106.0mm
- Volume
- 493 cm³
- 391 cm³◆
- Density
- 0.85 g/cm³
- 1.44 g/cm³
- Filter thread
- ⌀67mm
- ⌀62mm
- Min focus
- 0.24m◆
- 0.50m
- Max magnification
- 0.33×◆
- 0.07×
- Elements / groups
- 13 / 11
- 13 / 7
- Aperture blades
- 9
- 13◆
- Focus drive
- Nano USM (x3)
- Manual Helicoid
- Stabilisation
- Yes
- —
- Weather sealed
- Yes
- —
- Aperture ring
- —
- Yes · de-click
- Released
- 2026
- 2023
- MSRP (USD)
- $1,399
- $599◆
- Sharpness
- 8.4◆
- 7.7
- Bokeh Rendering
- 6.8
- 7.6◆
- Autofocus Speed
- 8.8
- MF
- Flare Resistance
- 7.0◆
- 6.0
- Build / Sealing
- 9.0◆
- 8.2
- Value / Size
- 7.4
- 8.3◆
Performance overlay
- RF 20-50mm F4 L IS USM PZ
- Argus 28mm f/1.2 FF (Canon RF)
◆ marks the best value in a row. Scores are 0–10 editorial ratings.