The L-series is Canon’s flagship professional lens range, representing the best in precision-designed EF optics. L-series lenses combine superior performance with superlative handling, and are resistant to dust and moisture.
Lightweight and versatile
The EF 24-105mm f/4L IS USM offers a 4.3x zoom ratio, from wide angle to medium telephoto. It is highly portable, weighing just 670g.
The f/4 maximum aperture of the EF 24-105mm f/4L IS USM is fixed throughout the lens’ focal-length range, so shutter speeds will not change as the lens is zoomed.
The EF 24-105mm f/4L IS USM features Canon’s three-stop Image Stabilizer (IS), making it ideal for handheld work. IS permits the use of shutter speeds up to three stops slower than normal, with no perceptible increase in image blur from camera shake.
Super UD and aspherical lens elements
The lens incorporates a Super UD (ultra-low dispersion) glass element to eliminate secondary chromatic aberrations. Aspherical lens elements correct for spherical aberrations. The result is crisp, high-contrast, undistorted optical performance throughout the zoom range, without colour fringing at high-contrast edges.
A ring-type ultrasonic motor drives autofocus extremely quickly, and in near silence. Excellent holding torque ensures the point of focus is reached accurately, without overshooting. Furthermore, full-time manual override is available, making it possible to adjust focus without leaving AF mode.
Super Spectra coating
Super Spectra coatings ensure accurate colour balance and enhance contrast. They also reduce flare and ghosting – a common problem caused by light bouncing off a camera’s sensor.
Smooth background blur
A virtually circular aperture diaphragm gives out of focus regions a softer, more uniform feel. Sharp foreground objects stand out against a smooth blurred background.
This has quickly become my most used lens. Its my WALKAROUND + lens, used for landscape to street portraiture. It gives excellent results, it suffer from some minor distortion problems at the short end, easily fixed in Adobe Lightroom. Color and bokeh are IMO excellent
I find the lens is really good on my 1D MkIV, maybe it could be wider at the short end but it gets me 98% of the shot I want. Focus in quick and quiet and the IS is a bonus if used correctly. Its great on my 1Ds Mk1 (FF) as 24mm is 24mm.