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Canon EF 400mm f/5.6L USM

Canon EF 400mm f/5.6L USM lens
Canon EF 400mm f/5.6L USM lens
 

Full frame sized image

Lenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either.

 

Ultrasonic AF

Lenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses.

 

No stepping motor AF

Lenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses.

 

One or more Low Dispersion lens element is used

Low Dispersion lens elements help to reduce chromatic aberration.

 

Not stabilized

Image stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule.

 

Metal mount

Cheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important.

 

Internal Focusing

Internally focusing lenses don't change their size while setting focus.

 

The front lens is fixed

The fixed front lens is not rotating during zoom and/or focusing. This allows the photographer to use petal shaped lens hood. Fixed front lenses also make the use of polarization filters a lot easier.

This high-performance lens was designed with portability and handling ease in mind. One super UD-glass element, whose characteristics are similar to fluorite, and one UD-glass element result in sharp pictures from corner-to corner. The lens also has a built-in hood and a detachable tripod mount.

Canon EF 400mm f/5.6L USM Specification

Available mount(s) Canon EF
Application(s) Wildlife
Category(s) Super telephoto
Multiplier
Stabilizer no
Focal length 400 mm (prime)
Lens construction 7 elements in 6 groups
Angle of view 35mm: 6.16°
digital: N/A
Number of blades 8
Maximum aperture f/5.6
Minimum aperture f/32
Minimum focusing distance 350 cm
Magnification 0.12×
Filter size 77 mm
Size ∅ 90 × 256.5 mm
Weight 1250 g
Notes Mechanical full-time manual focusing built-in. Built-in hood.
AF speed N/A
AF sound
Internal focusing yes
Internal zoom N/A
Fix front lens yes
Mount type metal
Weather sealed N/A
Drop in filter N/A
Ultrasonic AF yes
Stepping motor AF no
APS-C sized circle no
Low dispersion lens element yes
Hard case LH-D29 (not included)
Soft case LZ1132 (not included)
Lens hood N/A
Tripod adapter included
Canon EF 400mm f/5.6L USM Specification

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