This EF 300mm f/4L IS USM is characterized by outstanding mobility thanks to the outstanding image stabilizing system. The optics include 2 UD glass elements to thoroughly eliminate secondary spectrum.

Excellent optics and superb handling in a compact package with Image Stabilizer. The IS allows safe hand-holding at shutter speeds up to two stops slower than otherwise possible, making it even more useful in low light levels. It’s less than half the weight of the 300mm f/2.8L IS, and it focuses to an incredibly close 4.9 feet (1.5m), filling the frame with a subject the size of a postcard. Like all of Canon’s fixed focal length L-series lenses above 135mm, it’s compatible with Canon’s EF Extenders 1.4x II and 2x II.

• Focal length and maximum aperture: 300 mm 1:4
• Lens construction: 15 elements in 11 groups
• Diagonal angle of view: 8°15'
• Focus adjustment: Rear focusing system with USM
• Closest focusing distance: 1.5m / 4.9ft
• Filter size: 77mm

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