Canon RF50mm F1.4 L VCMvsTamron 17-70mm F/2.8 Di III-A VC RXD
RF50mm F1.4 L VCM
50mm / F1.4
—
17-70mm F/2.8 Di III-A VC RXD
17-70mm / F2.8
26-105mm equiv.
—
Which to choose
When the RF50mm F1.4 L VCM suits you better
- Brightness2.0 stops brighter — better in low light and blurs the background more
When the 17-70mm F/2.8 Di III-A VC RXD suits you better
- Close focusFocuses as close as 19cm
- Zoom rangeCovers 17-70mm in a single lens
- StabilizationHas stabilization
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
- RF50mm F1.4 L VCM99.3mm long × 76.5mm diameter
- 17-70mm F/2.8 Di III-A VC RXD117.3mm long × 74.6mm diameter
Specifications compared
| Specification | Canon RF50mm F1.4 L VCM | Tamron 17-70mm F/2.8 Di III-A VC RXD | Difference |
|---|---|---|---|
| Focal length (wide) | 50mm | 17mm | +33mm |
| Focal length (tele) | 50mm | 70mm | −20mm |
| Max aperture (wide) | F1.4 | F2.8 | 2.0 stops brighter |
| Max aperture (tele) | F1.4 | F2.8 | 2.0 stops brighter |
| Min aperture | F16 | — | No data |
| Min focus distance | 40cm | 19cm | +0.21m |
| Max magnification | 0.15× | — | No data |
| Aperture blades | 11blades | — | No data |
| Weight | 580g | 530g | +50g |
| Length | 99.3mm | 117.3mm | −18mm |
| Diameter | 76.5mm | 74.6mm | +1.9mm |
| Filter size | 67mm | 67mm | — |
| Released | 2024 | 2026 | −2year |
| Stabilization | No | Yes | No |
| Weather sealing | Yes | Yes | — |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as RF50mm F1.4 L VCM relative to 17-70mm F/2.8 Di III-A VC RXD.The highlighted cell is the better side for that specification.
Check prices
RF50mm F1.4 L VCM
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17-70mm F/2.8 Di III-A VC RXD
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RF50mm F1.4 L VCM in detail17-70mm F/2.8 Di III-A VC RXD in detailAll RF mount lenses