Premium imaging quality

Its large, aspherical GMo (bare pressed glass) lenses and UD lenses significantly reduce distortion and chromatic aberration. ASC (Air Sphere Coating) and SWC (Subwavelength Structure Coating) technology counteract reflections and flare, so you can work smoothly even in low-light conditions.

High constant luminous intensity

The high constant speed of 1:2.8 lets you make the most of the available light. The 9-blade iris diaphragm lets you shoot with attractive background blur.

Advanced autofocus

The EF 16-35mm f/2.8L III USM's ring-type USM and powerful CPU enable faster focusing.

Optical system

Newly developed optics deliver impressive sharpness from center to edge. The new 5-group zoom mechanism is even better protected against vibration and shock.

9-blade iris diaphragm

Compared to its predecessor, EF 16-35mm f/2.8L II USM, whose aperture consisted of 7 blades, the EF 16-35mm f/2.8L III USM now features a 9-blade iris diaphragm that enables beautiful background blur effects.

Lens Coatings

SWC (Subwavelength Structure Coating) and ASC (Air Sphere Coating) coatings protect against lens reflections and flare.