Canon ef 135mm f-2.8 用户手册

CT1-7541-004 

© CANON INC. 1987 

2008.5

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The infrared index corrects the focus setting when using 

monochrome infrared film. 

Focus on the subject in MF, then adjust the distance setting by 

moving the focusing ring to the corresponding infrared index mark 

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•  The infrared index position is based on a wavelength of 800 nm.

•  Be sure to observe the manufacturer’s instructions when using 

infrared film.

•  Use a red filter also when you take the picture.

You can attach filters to the filter mounting thread on the front of 

the lens.

•  Use a polarizing Canon filter (52 mm).

(1)  Lighting

In general, soft focus gives better results in backlit or semi-backlit 

shots. It is also a good idea to use a lens hood to avoid unwanted 

effects from extraneous light in the shot.

(2)  Subject foreground and background

In normal soft focus shots, you get a better result if you select 

something relatively dark as the background for your subject. 

Also, shot compositions that involve defocusing the foreground 

are not a good idea as the defocusing effect is poor.

(3)  Shooting distance

This lens gives its best soft focus effect at distances between 3 

and 5 meters.

(4)  Exposure

In general, exposures that are slightly higher than the correct 

exposure produce a better soft-focus effect.

Focal Length/Aperture

135 mm, f/2.8

Lens Construction

6 groups, 7 elements

Minimum Aperture

f/32

Angle of View

Diagonal

18°

Vertical

10°

Horizontal

15°

Min. Focusing Distance

1.3 m (4.3 ft.)

Max. Magnification 

0.12×

Field of View

188 × 282 mm (7.4 ×11.1 inch)

Filter Diameter

52 mm

Max. Diameter and Length

69.2 × 98.4 mm (2.8 × 3.9 inch)

Weight

390 g (13.6 oz.)

Hood

ET-65III

Lens Cap

E-52

Case

LP1016

Q

  The lens length is measured from the mount surface to the front 

end of the lens. Add 21.5 mm when including the lens cap and 

dust cap.

Q

  The size and weight listed are for the lens only, except as 

indicated.

Q

  Aperture settings are specified on the camera.

Q  All data listed is measured according to Canon standards.

Q

  Product specifications and appearance are subject to change 

without notice.

This device complies with Part 15 of the FCC Rules. Operation 

is subject to the following two conditions: (1) This device may 

not cause harmful interference, and (2) this device must accept 

any interference received, including interference that may cause 

undesired operation.

Do not make any changes or modifications to the equipment 

unless otherwise specified in the instructions. If such changes 

or modifications should be made, you could be required to stop 

operation of the equipment.

This equipment has been tested and found to comply with the 

limits for a class B digital device, pursuant to part 15 of the FCC 

Rules.

These limits are designed to provide reasonable protection against 

harmful interference in a residential installation. This equipment 

generates, uses and can radiate radio frequency energy and, if 

not installed and used in accordance with the instructions, may 

cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur 

in a particular installation. If this equipment does cause harmful 

interference to radio or television reception, which can be 

determined by turning the equipment off and on, the user is 

encouraged to try to correct the interference by one or more of the 

following measures:

•  Reorient or relocate the receiving antenna.

•  Increase the separation between the equipment and receiver.

•  Consult the dealer or an experienced radio/TV technician for 

help.

This Class B digital apparatus complies with Canadian ICES-003.

COP

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