Canon today announced the launch of the EF11-24mm f/4L USM – a wide angle zoom lens starting at 11mm1 in its professional L-series range of lenses. Harnessing cutting-edge EF lens technology of high quality components, the EF11-24mm f/4L USM aims to inspire professionals in achieving a new range of photographic expressions.

EF11-24mm f4L USM (Slant without cap)

“The EF11-24mm f/4L USM wide angle lens completes our extensive line-up of fast and affordable f/4 L series lenses, ranging from wide-angle lenses to telephoto lenses,” said Edwin Teoh, Assistant Director, Consumer Business Marketing, Canon Singapore. “Continued lens development will continue to be an integral part of our strategy to grow our photographic offerings, beyond just innovations in camera bodies.”
Seeing the world anew through widest horizons
With a maximum wide-angle of 11mm, the class-leading EF11-24mm f/4L USM covers a horizontal angle of view of 117° and a diagonal angle of view of 126°. Shooting at 11mm also provides a shooting area more than twice that of the 16mm focal length. Hence, where there are space constraints for the photographer, the EF11-24mm f/4L USM can easily capture large subjects such as the façade of buildings or high ceilings.

1 Excluding fisheye lenses

The EF11-24mm f/4L USM is ideal for time-lapse video recording as it allows the photographer to capture wide visual fields in one shot. In time-lapse video recording mode, superior quality frames captured with the lens will deliver a cinematographic recount of an event.
The EF11-24mm f/4L USM is Canon’s widest angle lens and its broad range provides flexibility for shooting close-up shots while encompassing more of the surroundings. The versatility of the EF11-24mm f/4L USM will be a distinct advantage for photographers, allowing them to explore different photographic compositions with a single lens.
Offering a minimum focusing distance of 0.28m (at 24mm) for small subjects like flowers or pets, the EF11-24mm f/4L USM will offer fresh perspectives in still life photography. Photographers will be able to swoop in close to their subject while still capturing its surroundings. Creative photographers will also be able to capitalise on the lens’ full spectrum to capture artistic angles and surreal images vastly different from reality, for fashion or art photography purposes.

New optical system crafted from precision engineering
The optical system of the EF11-24mm f/4L USM was developed to ensure a consistently high image quality throughout the zoom range. The optical system comprises the assembly of four aspherical lenses, a UD lens, and a super UD lens to create the 11-24mm ultra-wide zoom lens.
The 87mm front element aspherical lens plays a pivotal role in the formation of the durable 11-24mm ultra-wide zoom lens. Besides minimising the reflection, another advantage of the large diameter lens is the reduction of the vignette effect. The new optical design, UD lenses, and super UD lenses, significantly reduce the magnification-type chromatic aberration – a common phenomenon that occurs with ultra-wide angle lenses. Additionally, the intricate arrangement of these lenses significantly minimises distortion even at extreme focal lengths.
For the first time in the history of Canon EF lenses, two lens elements in the EF11-24mm f/4L USM have been specially coated with the Subwavelength Structure Coating (SWC) technology, minimising ghosting and flaring caused by reflection. In further reducing visible ghosting and flare, the fourth lens in the lens group has an Air Sphere Coating (ASC); an advanced anti-reflection coating constructed by tiny nano particles of trapped air which
creates an ultra-low refractive index. Beyond its anti-reflection capabilities, overall optimization of ASC has also led to strong colour balance.

Designed for resilience
L-series lenses are manufactured to be reliable, durable, and able to withstand extreme conditions and rough handling. Having been improved from previous lenses, the EF11-24mm f/4L USM’s zoom function and lens barrel are less susceptible to shock and
The entire body of the EF11-24mm f/4L USM is dust and water resistant to protect it from harsh environmental elements. Additionally, both front and rear lenses are glazed with a protective fluorine coating to repel water and oil. Oil that adheres to the lens can be wiped with a dry cloth.
The lens barrel also comes with a built-in petal type hood, which protects the large front lens from the glare of extreme light sources like the sun.

Pricing and Availability
Pricing and availability of the EF11-24mm f/4L USM will be announced at a later date.


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By Harry