Canon RF100-400mm F5.6-8 IS USMvsSigma 16-300mm F3.5-6.7 DC OS
RF100-400mm F5.6-8 IS USM
100-400mm / F5.6-8
—
16-300mm F3.5-6.7 DC OS
16-300mm / F3.5-6.7
24-450mm equiv.
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Which to choose
When the RF100-400mm F5.6-8 IS USM suits you better
No standout advantage in this comparison.
When the 16-300mm F3.5-6.7 DC OS suits you better
- Brightness1.4 stops brighter — better in low light and blurs the background more
- Zoom rangeCovers 16-300mm in a single lens
- Weather sealingHas weather sealing
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
- RF100-400mm F5.6-8 IS USM164.7mm long × 79.5mm diameter
- 16-300mm F3.5-6.7 DC OS121.4mm long × 73.8mm diameter
Specifications compared
| Specification | Canon RF100-400mm F5.6-8 IS USM | Sigma 16-300mm F3.5-6.7 DC OS | Difference |
|---|---|---|---|
| Focal length (wide) | 100mm | 16mm | +84mm |
| Focal length (tele) | 400mm | 300mm | +100mm |
| Max aperture (wide) | F5.6 | F3.5 | 1.4 stops darker |
| Max aperture (tele) | F8 | F6.7 | 0.5 stops darker |
| Min aperture | F32 | — | No data |
| Min focus distance | 88cm | — | No data |
| Max magnification | 0.41× | — | No data |
| Aperture blades | 9blades | — | No data |
| Weight | 635g | 625g | +10g |
| Length | 164.7mm | 121.4mm | +43.3mm |
| Diameter | 79.5mm | 73.8mm | +5.7mm |
| Filter size | 67mm | 67mm | — |
| Released | 2021 | 2025 | −4year |
| Stabilization | Yes | Yes | — |
| Weather sealing | No | Yes | No |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as RF100-400mm F5.6-8 IS USM relative to 16-300mm F3.5-6.7 DC OS.The highlighted cell is the better side for that specification.
Check prices
RF100-400mm F5.6-8 IS USM
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16-300mm F3.5-6.7 DC OS
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RF100-400mm F5.6-8 IS USM in detail16-300mm F3.5-6.7 DC OS in detailAll RF mount lenses