Announcing the EF16-35mm f/2.8L III USM Ultra-wide Angle Zoom Lens: Coated with Both SWC & ASC

Canon announced the ultra-wide angle zoom lens EF16-35mm f/2.8L III USM, compatible with 35mm full-frame DSLRs, on 25 August. Here is a quick report on this lens’ specifications. (Reported by: Osamu Takeishi (Digital Camera Watch))


Even higher image quality with this third generation of a staple pro lens

On 25 August 2016, Canon announced their interchangeable lens, the EF16-35mm f/2.8L III USM. Estimated sales start date has yet to be announced.

This ultra-wide angle zoom lens is compatible with 35mm full-frame DSLRs and is the latest addition to the lineup of Canon's L-series (Luxury) lenses. It is the third successive generation after the EF16-35mm f/2.8L USM (released 2001) and the EF16-35mm f/2.8L II USM (released 2007).

Other ultra-wide angle zoom lenses with similar focal ranges in Canon’s current lineup include the EF16-35mm f/4L IS USM (released 2014) and the EF17-40mm f/4L USM (released 2004).

The optical composition of this lens consists of 16 elements in 11 groups. It features two large-diameter double-aspheric GMo (glass-moulded) lenses, a ground aspheric lens, and two UD (Ultra Low Dispersion) lenses. This lens provides higher image quality from the center of the screen to its periphery.

Similar to the EF11-24mm f/4L USM, both SWC (Subwavelength Structure Coating) and ASC (Air Sphere Coating) have been used as lens coatings, in order to suppress flaring and ghosting. The body features a dust-proof, drip-proof structure, and a fluorine coating has been applied to the lens surfaces to allow stains to be easily wiped off.

The closest focusing distance throughout the focal range is 0.28m, with a maximum magnification of 0.25x (telephoto end). It is equipped with 9 circular aperture blades, and takes 82mm filters. Its dimensions measure ø88.5 x 127.5mm, and it weighs approximately 790g.


A: Aspherical Lens
B: UD Lens


Modular Transfer Function (MTF) Graphs



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EF16-35mm f/2.8L III USM

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Delivers daily news related to topics such as digital cameras and peripheral devices, and imaging software. Also publishes articles such as reviews on the use of actual digital camera models and photo samples taken using new models.


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