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Canon EF 17-40mm F4 L USM

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Canon EF 17-40mm F4 L USM

This excellent zoom lens designed for Canon digital SLR and film cameras offers a wide angle view and focus from as low as 28cm. Its high moisture and dust resistance makes it suitable for everyday use.The lens combines three aspheric elements along with super UD. Another perk is the possibility to attach a filter with a diameter of 77mm that can be screwed on or attached by a drop-in gelatine-filter holder that can be found at the back of the lens. The Canon EMD (electromagnetic aperture control) comes as another advantage of the lens. The focusing process of the lens is extremely quick and quiet due the USM actuator.This actuator uses the piezoelectric principle and is formed by two rings placed against each other, one of which acts as a stator, the second (actuating the focusing mechanism) as the rotor.
Specifications:
Focus actuator:
USM
Angle of view (diagonally):
104°-57°30 '
Number of lens elements/groups:
12/9
Maximum aperture:
22
Number of diaphragm blades:
7
Closest focusing distance:
0.28m
Length:
97mm
Filter diameter:
77mm/gelatin
Weight:
500g
Compatible Lens Hood:
EW-83E

Specifications

Suitable for

Brand Canon
Model EOS 250D, EOS 90D

Bayonet

Bayonet Canon EF
Camera type SLR camera

Features

For sensor Full Frame, APS-C
Lens type Zoom
Min. focal length 17 mm
Max. focal length 40 mm
Max. focal length (35mm conversion) 70 mm
Minimum focal length (35mm conversion) 28 mm
Minimum focal length aperature f/4
Maximum focal length aperature f/4
Maximum aperture 22
Filter diameter 77 mm
Min. focusing distance 28 cm
Filter diameter 77 mm

Functions

Function Strong brightness
Focusing type Automatic
Focus technology USM
Optical Lens Stabilisation No

Dimensions

Length 96.8 mm
Diameter 83.5 mm

Weight

Weight 500 g
Code:  OC302
Product Number:  8806A011AA
Links: Producer's Website:

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