Canon EF 24–105 mm f/3.5–5.6 IS STM
Overview:
A budget-friendly, full-frame capable standard zoom introduced as an affordable alternative to Canon's L-series lenses
Key Specs:
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Focal Length: 24–105 mm
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Aperture: f/3.5–5.6 (variable)
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Autofocus: STM stepping motor—quiet and smooth for video
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Weight: ~525 g (18.5 oz)
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Closest Focus: ~0.45 m; Max magnification ~0.12–0.46×
Performance:
Delivers solid image quality—sharp at mid-range apertures with reliable stabilization—at a modest price. A good everyday walk-around lens
Urban Cameras and Accessories
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Canon RF 24–105 mm f/4–7.1 IS STM
Overview:
A compact, lightweight zoom for full-frame EOS R mirrorless cameras, launched in early 2020 .
Key Specs:
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Aperture: f/4–7.1 (variable)
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Weight: ~395 g (0.87 lb)
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Minimum Focus:
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Standard AF: ~0.20 m (0.66 ft), 0.4× magnification
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Center Macro mode: ~0.13 m (0.43 ft), up to 0.5× mag
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Image Stabilization: Up to 5 stops
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Autofocus: Leadscrew-type STM—smooth and quiet
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Optics: 13 elements in 11 groups; 7-blade rounded aperture
Performance:
Praised for being sharp, compact, and versatile, with effective stabilization and macro capability
Comparison & Use Cases
Feature | EF STM (f/3.5–5.6) | RF STM (f/4–7.1) |
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Mount | EF (DSLR) | RF Mirrorless (EOS R) |
Aperture Range | f/3.5–5.6 | f/4–7.1 |
Weight | ~525 g | ~395 g |
Closest Focus (Macro) | ~0.45 m, ~0.46× | 0.13 m (centre), 0.5× |
Image Stabilization | 3 stops | 5 stops |
Autofocus | STM | Leadscrew STM |
Size/Portability | Moderate size | Compact and light |
Why choose STM?
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The EF STM provides a budget option for DSLR users seeking stabilized zoom at a useful focal range.
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The RF STM is ultra-light, stabilized, and adds close-focusing macro—ideal for travel and hybrid stills/video shooters on EOS R bodies.
Recommendation
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Use the EF STM if you shoot with Canon DSLRs and want a cost-effective, stabilized everyday zoom.