EF 400mm f/2.8L IS II USM Lens

EF 400MM F/2.8L IS II USM LENS

EF 400mm f/2.8L IS II USM Lens

High performance, L-series super-telephoto lens, for sports and wildlife photography

Ultra-high-performance L-series super-telephoto lens, featuring a 4 stop Image Stabilizer with 3 modes, ideal for sports and wildlife photography. The EF 400mm f/2.8L IS II USM allows for easy panning and delivers outstanding image quality in a robust design is ideally positioned for professional action photography. With a new security slot for wire-type security locks, buttons and switches are redesigned for intuitive, deliberate operation, and dust and water sealing keeps the lens functioning flawlessly in even the most challenging environments.

fluorite-lens-elements_b image-stabilizer_b ring-usm inner-focusing full-time-manual-focusing_b dust-and-drip-resistant-fluorine-coating_b swc_Special Coating circular-aperture-diaphragm_b

Highlights

  • 400mm f/2.8 ultra-high-performance super-telephoto lens
  • Part of Canon’s acclaimed L series
  • 4 stop Image Stabilizer
  • 3 IS modes
  • Durable, rugged design
  • Enhanced image quality
  • Quiet and fast autofocus

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Overview

The stellar combination of superlative optics, astonishing performance and brilliant construction, the EF 400mm f/2.8L IS II USM super telephoto is the professional’s choice for a long lens, and perfect for nature and wildlife photography. Over 28% lighter than its predecessor and now the lightest lens in its class, the EF 400mm f/2.8L IS II USM features Fluorite optics that deliver sharper images with less chromatic aberration, a completely redesigned Image Stabilization system that offers up to four extra stops of performance, a newly-developed Fluorine coating that keeps soiling, smears and fingerprints to a minimum, plus new construction in line with only the best that Canon has to offer. With a third Image Stabilization mode (Mode 3) that activates IS only when the shutter button is fully pressed, and giving the equivalent effect of a shutter speed four stops faster, the EF 400mm f/2.8L IS II USM allows for easy panning and is ideally positioned for professional action photography. With a new security slot for wire-type security locks, buttons and switches are redesigned for intuitive, deliberate operation, and dust and water sealing keeps the lens functioning flawlessly in even the most challenging environments.

Ultra-High performance super-telephoto lens

With a large aperture of f/2.8, the EF 400mm f/2.8L IS II USM is an ultra-high-performance super-telephoto lens delivering exceptional image quality in a durable design using magnesium alloy and titanium to reduce weight.

L-series quality

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 highly resistant to dust and moisture.

4-stop Image Stabilizer

A 4-stop optical Image Stabilizer – specially designed for the lens’ specific focal length range – works to counteract image blur, which can occur during handheld shooting, or at slow shutter speeds. Automatic panning detection ensures effective performance when tracking moving subjects and, as the IS system is based in the lens, results are visible through the viewfinder during framing.

3 IS Modes

Ideally suited for all types of action photography especially those disciplines that require the utilization of panning, the new IS mode 3 only activates the image stabilizer element during exposure.

Enhanced image quality with SWC coating

Designed for use in digital photography, Canon’s patented Subwavelength structure coating helps minimise the ghosting and flare caused by internal reflections. By eliminating the cause, the coating reduces reflections and helps to deliver crisp, clear images.

Fast, quiet auto focus

A ring USM (Ultrasonic motor) uses ultrasonic frequency vibrations to drive extremely rapid auto focus with near-silent operation. A high-speed CPU and optimised AF algorithms contribute further to AF speed. Full time electronic manual focus override is available without having to switch out of AF.

 

Features

Fluorite Lens Elements

Substantially corrects chromatic aberrations in the telephoto range

Fluorite is a type of mineral that is the crystallised form of calcium fluoride. It possesses optical properties such as a low refractive index and a low dispersion. Natural fluorites are small in size, and cannot be used in DSLR camera lenses. In 1969, Canon established a technology for creating artificial crystal fluorite and developed a special technology with a polishing process that takes four times longer than usual, the first in the world to succeed in commercialising the use of fluorite in photographic lenses. By utilising the low-dispersion characteristics of fluorite, the occurrence of secondary spectrum, which is unavoidable in conventional optical glass, can be eliminated almost entirely. Image quality is significantly enhanced as a result, enabling vivid, sharp, and yet detailed image expression.

fluorite-lens-elements1

 

IS (Image Stabilizer)

In-lens correction of camera shake

Canon was the first in the world to develop the IS (Image Stabilizer), an in-lens system to correct camera shake in DSLR cameras. Compared to the in-camera Image Stabilizer feature, not only is the IS capable of stabilising the viewfinder image, it also helps to improve AF accuracy.
The underlying principle is that the amount of misalignment between the image of the subject and the optical axis of the lens is detected by two vibration-detecting gyro sensors. The corrective optical system inside the lens is then moved accordingly in the vertical or horizontal direction to stabilise the image of the subject on the imaging plane.
Most blurry pictures occur as the result of camera shake, which inevitably happens when you take handheld shots. Such blurring is more obvious at slow shutter speeds, which usually occur at low light settings such as during indoor portrait or night street photography because the low amount of light requires the sensor to be exposed for longer. For that reason, photographers usually make up for that by setting a higher ISO speed or using a tripod and remote shutter release. Both have their merits, but also some demerits.

For instance, while increasing the ISO speed also increases the shutter speed, noise occurs at high ISO speeds. There is therefore a limit to how high you can set the latter without compromising on image quality. Similarly, while using a tripod and remote shutter release keeps camera shake to a minimum, they are practical only for certain shooting scenes as prior setup is required.

IS, on the other hand, is able to suppress camera shake to a certain degree even for such scenes, increasing the range of scenes for which you can take handheld shots. Depending on the lens, the image stabilization effect may allow you to shoot at 2-5 shutter speed stops slower than without IS.

image-stabilizer1

With IS function

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Without IS function

 

Ring USM, Micro USM, Nano USM

Enables silent and high-speed focusing

USM (Ultrasonic Motor) was first put into practical application in the world by Canon. USM drives the lens by transforming ultrasonic vibrations into rotation energy. Not only does it consume little power, it has high efficiency, torque and response, enabling high-speed focusing with almost no operating sound emitted.

There are three types of USM . The round-shaped Ring USM is simple in structure, and is best suited for use in a circular lens tube. It is especially useful for driving lenses such as large-diameter or super telephoto ones due to its high torque, and it also allows for full-time manual focusing. Meanwhile, the Micro USM can be employed on many types of lenses because it is low in cost and not subject to restrictions on the lens diameter. In 2002, Canon contributed further to the downsizing of lenses with the development of the Micro USM II, which is about half the size and weight of the Micro USM . And in 2016, Canon introduced Nano USM, which not only realizes a high speed AF that rivals that achieved by Ring USM, but also is able to operate quietly and seamlessly. It’s not an exaggeration to describe Nano USM as the most ideal motor for normal-use lenses that are meant to handle both still photography and movie shooting.

 Rung USM

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Micor USM (Left), Micro USM II (Right)

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Nano USM—The thin and tiny USM motor that achieves fast and smooth AF

Thin and compact, this USM, the latest to be developed by Canon, made its debut in 2016 on the EF-S18-135mm f/3.5-5.6mm IS USM. Computer chip-shaped (a factor that allows a more compact lens design) with power sources in the form of transducers, it connects directly to the AF actuating mechanism. It possesses a speediness and responsiveness that rivals that of the Ring USM, combined with a control that equals that of STM (lead screw-type). Its main benefit lies in enabling quiet, smooth AF operation in compactly-sized lenses such as standard zoom lenses. Also very suitable for movie-shooting, its high speed AF is able to handle scenes with subjects that are moving at a fast speed as well as those with unpredictable movements.

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The Nano USM is shaped like a computer chip, and has 2 transducers in its center.

Ef 16-35mm f2.8L III USM Cross Section Ef 16-35mm f2.8L III USM Cross Section 2

A cross section of the EF-S18-135mm f/3.5-5.6 IS USM, released in 2016 and the first lens to carry the Nano USM. Moving along the top of the slider, the Nano USM directly drives the main AF power source. As this motor not only allows for fast and smooth AF but is also small in size, it makes it possible for the lens that utilize it to be around the same size as lenses with STM.

 

Inner Focusing, Rear Focusing

Enables high-speed and precise AF

The inner focusing and rear focusing systems adjust the focus by moving only some of the lens elements inside the lens. Inner focusing refers to the type where the focusing lens group is located in front of the aperture diaphragm, while this group is positioned behind the aperture diaphragm in the case of the rear focusing type. As a smaller number of lens elements need to be moved, AF speed can be increased, and the size and weight of the entire lens can also be reduced. Besides, the front of the lens does not extend out during focusing, thus making it easy to achieve an integral lens structure, which in turn contributes to the enhanced robustness of the design. Yet another advantage of this system is that it enhances the operability of polarising filters as the filter mount does not rotate during focusing.

 inner-rear-focusing1

EF24-70mm f/2.8L USM Rear System

 inner-rear-focusing2

EF400mm f/5.6L USM Rear System

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EF70-200mm f/2.8L IS II USM Inner System

Full-time Manual Focusing

Enables MF immediately after AF

Many of Canon’s EF lenses are equipped with “full-time manual focusing”, which allows manual focus right after auto focus is complete, just by turning the focusing ring and without the need to switch to MF mode. All Ring USM and STM lenses support full-time manual focusing.

full-time-manual-focusing1

Dust- and Drip-Resistant, Fluorine Coating

Dust- and drip-proof for shooting under harsh conditions

Many of Canon’s L lenses come with a dust- and drip-proof structure, with rubber sealing applied to the interface area between the joint of the mount and the camera, as well as sealing at the movable parts such as the focusing ring and the lens extension tube. Rubber materials are also employed even at the smallest parts, such as the switch panel and the insertion slot of the drop-in filter compartments. The excellent dust- and drip-resistance enhances the usability of lenses under adverse weather, and helps to address the needs of professional photographers who are required to perform shoots under harsh shooting conditions. Fluorine-coated lenses allow dirt attached to the lens to be wiped off easily.

dust-and-drip-resistant-fluorine-coating1

 

Special Coating – SWC

Minimises flare and ghosting substantially

SWC is the abbreviation of Subwavelength Structure Coating, a special coating technology developed by Canon to prevent the reflection of light rays. Reflection occurs due to the drastic change in refractive index when light passes through the boundary between the air and the glass surface. Reflection causes flare and ghosting, which in turn deteriorates the image quality. SWC removes the boundary plane that is subject to drastic changes in the refractive index by arraying on the lens surface countless wedge-shaped nanostructures smaller than the wavelength of visible light to change the refractive index gradually. It offers excellent anti-reflection effects for light coming in from different angles, ranging from those entering at an almost perpendicular angle to those with a large angle of incidence.

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Anti-reflection theory of SWC

 

Circular Aperture Diaphragm

Expresses point light sources in beautiful round bokeh

The aperture is made up of several blades, the number of which determines the shape of the bokeh effect, such as in the case of illumination, light seeping through the leaves of a tree, and light reflection from the water surface. Light normally appears round when seen through our eyes, thus expressing light in a circular shape adds a more natural and soft touch to the resulting image. Almost all EF lenses employ a circular aperture diaphragm.

 

 

Specifications

PHYSICAL SPECIFICATIONS

Specification Details
PRODUCT WEIGHT INPUT-1 3850 g
FILTER DIAMETER (MM) 52 Drop in
MAXIMUM DIAMETER X LENGTH (MM) 163 x 343
WATER/DUST RESISTANCE Yes


OPTICAL CHARACTERISTICS

Specification Details
AF ACTUATOR Ring USM
DISTANCE INFORMATION Yes
LENS CONSTRUCTION (ELEMENTS/GROUPS) 16/12
MINIMUM APERTURE 32
AF ACTUATOR AF FOOTNOTE Full time Manual focus
MAGNIFICATION WITH EXTENSION TUBE EF12 II 0.21-0.03
MAGNIFICATION WITH EXTENSION TUBE EF25 II 0.26-0.07
ANGLE OF VIEW 5°10′, 3°60′, 6°10′
MAGNIFICATION 0.17


ACCESSORIES

Specification Details
EXTENDER COMPATIBLITY  Compatible

 

SPECIFICATIONS WITH EXTENDER 2x III

Specification Details
IS Yes
AF POSSIBLE Yes

 

SPECIFICATIONS WITH EXTENDER 1.4x III

Specification Details
IS Yes
AF POSSIBLE Yes

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EF 400mm f/2.8L IS II USM Lens

Price:₨
  • Mount : EF

  • Aperture : f/2.8

  • Lens Type : Fixed/Prime Lens

  • Category : Super Telephoto

  • Focal Length Range : 400mm

  • Photography Genre : Sport & Wildlife

  • Technology : USM

  • Dust/Moisture resistance : Yes

  • Weight : 4200 g

  • Luxury Lens : Yes

  • IS System : Yes

  • Lens Construction (Elements/Groups) : 16 elements in 12 groups

  • Filter Diameter (mm) : 52 DI

  • Closest Focusing Distance (m) : 2.7

  • Length (mm) : 343

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