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One-line verdict

The Canon RF 24-105mm f/4 L IS USM is a sharp, weather-sealed standard zoom that trades brighter aperture for everyday travel versatility and consistent image quality across its range.

How it compares

vs Canon RF 24-70mm F2.8 L IS USM ($2400–$2700): RF 24-105mm wins on zoom range and price; RF 24-70mm f/2.8 wins on maximum aperture and low-light performance
vs Sony FE 24-70mm f/2.8 GM II ($2300–$2500): RF 24-105mm wins on reach (105mm vs 70mm) and affordability; GM II wins on aperture speed and overall optical sharpness
vs Sony E 16-55mm f/2.8 G ($1300–$1400): RF 24-105mm wins on longer telephoto end and full-frame coverage; Sony 16-55mm wins on wider field of view and faster aperture on APS-C
vs Sigma 14mm f/1.4 DG DN Art ($1599–$1699): RF 24-105mm wins on zoom versatility and travel usability; Sigma wins on maximum aperture and ultra-wide angle for night/astro work

AI-summarized review themes

Frequently Praised

Sharpness remains high across the frame, even at f/4 corners
Autofocus is fast and accurate for stills and casual video
Image stabilization works well for handheld low-light shots
Compact size suits all-day travel without fatigue
Fixed f/4 aperture holds exposure constant when zooming
Weather sealing protects against light rain and dust
Build quality feels solid and professional in daily use
Focal range covers most vacation and walk-around needs

Frequently Criticized

f/4 maximum aperture limits subject separation versus f/2.8 zooms
Lens extends when zooming and can creep without lock engaged
Edge softness noticeable at f/4 on high-resolution bodies
Autofocus struggles in low-contrast scenes such as overcast skies

Best for

Travel photography, event coverage, full-frame Canon R-series users

Not for

Low-light event work, shallow depth-of-field portraiture, extreme telephoto needs

Specifications

Spec	Value
Focal Length	24-105 mm
Maximum Aperture	f/4 constant
Image Stabilization	Optical IS, ~5 stops
Autofocus Motor	Nano USM
Filter Thread	77 mm
Weather Sealing	Yes
Weight	700 g
Dimensions	84 × 107 mm

Data sources

Estimated ~8 purchase reviews via Amazon, Amazon aggregated review insights (8 attributes, 174 review mentions)
Review period: 2023–2026
Sentiment confidence: high

Canon RF 24-105mm f/4 L IS USM Lens

Where to buy