Canon RF24-105mm F4 L IS USMvsCanon RF45mm F1.2 STM
RF24-105mm F4 L IS USM
24-105mm / F4
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RF45mm F1.2 STM
45mm / F1.2
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Which to choose
When the RF24-105mm F4 L IS USM suits you better
- Zoom rangeCovers 24-105mm in a single lens
- StabilizationHas stabilization
- Weather sealingHas weather sealing
When the RF45mm F1.2 STM suits you better
- Brightness3.5 stops brighter — better in low light and blurs the background more
- Weight354g lighter, so easier to carry
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
- RF24-105mm F4 L IS USM107.3mm long × 83.5mm diameter
- RF45mm F1.2 STM75mm long × 78mm diameter
Specifications compared
| Specification | Canon RF24-105mm F4 L IS USM | Canon RF45mm F1.2 STM | Difference |
|---|---|---|---|
| Focal length (wide) | 24mm | 45mm | −21mm |
| Focal length (tele) | 105mm | 45mm | +60mm |
| Max aperture (wide) | F4 | F1.2 | 3.5 stops darker |
| Max aperture (tele) | F4 | F1.2 | 3.5 stops darker |
| Min aperture | F22 | F16 | +6.0 |
| Min focus distance | 45cm | 45cm | — |
| Max magnification | 0.24× | 0.13× | +0.11x |
| Aperture blades | 9blades | 9blades | — |
| Weight | 700g | 346g | +354g |
| Length | 107.3mm | 75mm | +32.3mm |
| Diameter | 83.5mm | 78mm | +5.5mm |
| Filter size | 77mm | 67mm | +10mm |
| Released | 2018 | 2025 | −7year |
| Stabilization | Yes | No | Yes |
| Weather sealing | Yes | No | Yes |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as RF24-105mm F4 L IS USM relative to RF45mm F1.2 STM.The highlighted cell is the better side for that specification.
Check prices
RF24-105mm F4 L IS USM
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RF45mm F1.2 STM
ADLinks to Amazon, B&H Photo, Adorama, KEH Camera, MPB, eBay are affiliate links. We may earn a commission if you buy through them, at no extra cost to you.Links marked “Search results” go to that retailer’s search page for this lens name.Check price and availability on the retailer’s own site.
RF24-105mm F4 L IS USM in detailRF45mm F1.2 STM in detailAll RF mount lenses