Canon RF10-20mm F4 L IS STMvsCanon RF20mm F1.4 L VCM
RF10-20mm F4 L IS STM
10-20mm / F4
—
RF20mm F1.4 L VCM
20mm / F1.4
—
Which to choose
When the RF10-20mm F4 L IS STM suits you better
- Zoom rangeCovers 10-20mm in a single lens
- StabilizationHas stabilization
When the RF20mm F1.4 L VCM suits you better
- Brightness3.0 stops brighter — better in low light and blurs the background more
- Close focusFocuses as close as 20cm
These points are derived mechanically from the numbers. How a lens actually renders does not show up in specifications, so look at samples before deciding.
Size compared
- RF10-20mm F4 L IS STM112mm long × 83.7mm diameter
- RF20mm F1.4 L VCM99.3mm long × 76.5mm diameter
Specifications compared
| Specification | Canon RF10-20mm F4 L IS STM | Canon RF20mm F1.4 L VCM | Difference |
|---|---|---|---|
| Focal length (wide) | 10mm | 20mm | −10mm |
| Focal length (tele) | 20mm | 20mm | — |
| Max aperture (wide) | F4 | F1.4 | 3.0 stops darker |
| Max aperture (tele) | F4 | F1.4 | 3.0 stops darker |
| Min aperture | F22 | F16 | +6.0 |
| Min focus distance | 25cm | 20cm | +0.05m |
| Max magnification | 0.12× | 0.19× | −0.07x |
| Aperture blades | 9blades | 11blades | −2blades |
| Weight | 570g | 519g | +51g |
| Length | 112mm | 99.3mm | +12.7mm |
| Diameter | 83.7mm | 76.5mm | +7.2mm |
| Filter size | — | 67mm | No data |
| Released | 2023 | 2025 | −2year |
| Stabilization | Yes | No | Yes |
| Weather sealing | Yes | Yes | — |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as RF10-20mm F4 L IS STM relative to RF20mm F1.4 L VCM.The highlighted cell is the better side for that specification.
Check prices
RF10-20mm F4 L IS STM
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RF20mm F1.4 L VCM
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RF10-20mm F4 L IS STM in detailRF20mm F1.4 L VCM in detailAll RF mount lenses