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Canon Fit Lenses
Canon EF 400mm f/4 DO IS USM Lens

Canon EF 400mm f/4 DO IS USM Lens

£5,495.95
Special Order

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A pioneering super-telephoto lens that uses multi-layer Diffractive Optical (DO) technology. The result is a combination of high performance with small, lightweight physical design.

  • One DO (Diffractive Optic) lens element
  • One Fluorite lens element
  • L-series construction and optics
  • Fast, quiet autofocus
  • Super Spectra coatings
  • 52mm Rear drop-in filter holder
  • Hard case and lens hood

 

Diffractive Optics technology
A unique approach to lens design. The EF 400mm f/4 DO IS USM incorporates a multi-layer Diffractive Optical (DO) element, meaning it is smaller and lighter than lenses of conventional equivalent design. The DO element – developed by Canon – is a milestone in optical design, combining the properties of fluorite and aspherical elements in one.

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 resistant to dust and moisture.

Image stabilization
The EF 400mm f/4 DO IS USM features Image Stabilisation technology that permits the use of shutter speeds two stops lower than normal without blur from camera shake.

Ultrasonic focusing
A ring-type ultrasonic motor drives autofocus extremely quickly, and in near silence. Excellent holding torque ensures the point of focus is reached accurately, without overshooting. Furthermore, full-time manual override is available, making it possible to adjust focus without leaving AF mode.

Super Spectra coating
Super Spectra coatings ensure accurate colour balance and enhance contrast. They also reduce flare and ghosting – a common problem caused by light bouncing off a camera's sensor.

Accessories
The lens comes supplied with a lens hood and a hard case.

Angle of view (horzntl, vertl, diagnl)
5°10', 3°30, 6°10'
Lens construction (elements/groups)
17/13
No. of diaphragm blades
8
Minimum aperture
32
Closest focusing distance (m)
3.5
Maximum magnification (x)
0.12
AF actuator
USM¹
Filter diameter (mm)
52 Drop-in
Max. diameter x length (mm)
128 x 232.7
Weight (g)
1,940
Magnification - Extension Tube EF12 II
0.16 - 0.03
Magnification - Extension Tube EF25 II
0.20 -0.07
Lens hood
ET-120
Hard case
Lens Case 400
Soft case
-
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