Canon lens EF 50mm f12L USM User Manual

EF50mm f/1.2L USM
Instruction
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Thank you for purchasing a Canon product.
The Canon EF50mm f/1.2L USM lens is a
high-performance, large-aperture standard
lens with a large-diameter, high-precision,
aspherical lens element designed for EOS
cameras.
The lens is suitable for portraits and other
types of photographs making full use of the
large-diameter lens feature for nice
background blur.
¡“USM” stands for Ultrasonic Motor.Features
1. Large-diameter, high-precision aspheric lenselement for excellent imaging performance
even at the...

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aSafety Precautions
aSafety Precautions•Do not look at the sun or a bright light source
through the lens or camera. Doing so could result
in loss of vision. Looking at the sun directly through
the lens is especially hazardous.
• Whether it is attached to the camera or not, do
not leave the lens under the sun without the
lens cap attached. This is to prevent the lens from
concentrating the sun’s rays, which could cause a
fire.
Handling Cautions• If the lens is taken from a cold environment into
a...

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Distance scale  (→ 5, 6)Depth-of-Field scale  ( → 6)
Contacts (→ 4) Focus mode switch (→ 5)
Hood mount (→ 7)
Lens mount index  (→ 4)
Filter mounting 
thread (→ 7)
Infrared index  (→ 6)
Focusing ring (→ 5)
Nomenclature
F or detailed information, reference page numbers are provided in parentheses (→  **).
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See your camera’s instructions for details on
mounting and detaching the lens.
¡After detaching the lens, place the lens with the
rear end up to prevent the lens surface and
electrical contacts from getting scratched.
¡ If the contacts get soiled, scratched, or have
fingerprints on them, corrosion or faulty
connections can result. The camera and lens
may not operate properly.
¡ If the contacts get soiled or have fingerprints on
them, clean them with a soft cloth.
¡ If you remove the lens, cover it...

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3.Infinity Compensation Mark
To  compensate for shifting of the infinity focus
point that results from changes in temperature.
The infinity position at normal temperature is the
point at which the vertical line of the L mark is
aligned with the distance indicator on the
distance scale.
F or accurate manual focusing on subjects at
infinity distance, look through the viewfinder while
rotating the focusing ring.
2.Setting the Focus Mode
After autofocusing in ONE SHOT AF mode, focus
manually by...

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5. Depth-of-Field Scale
The depth of field is the distance in front of and
behind the plane of focus on the subject that
appears sharp. The depth of field is indicated by
the area between the depth-of-field scale lines
below the distance scale. Numbers in the scale
are in F values, and for example, if the shooting
distance is 3m and the aperture is f/11, the
sharp area will extend from about 2m to 5m.
The depth-of-field scale is an approximate
indicator.
The infrared index corrects the focus...

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7. Filters (Sold separately)
You can attach filters to the filter mounting thread
on the front of the lens.
¡To   ensure dust- and water-resistant
performance, attach a Canon PROTECT filter
(72mm).
¡Only one filter may be attached.
¡If you need a polarizing filter, use the Canon Circular Polarizing Filter (72mm).
¡To   adjust the polarizing filter, first remove the
lens hood.
6. Hood
The ES-78 hood can keep unwanted light out of
the lens, and also protects the lens from rain,
snow, and dust.
Attach...

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8.Extension Tubes (Sold separately)
You can attach Extension Tube EF12 II or EF25
II for magnified shots. The shooting distance and
magnification are shown below.
Camera-to-SubjectMagnificationDistance (mm)Near Far Near Far
EF12 II 246 322 0.39× 0.24×
EF25 II 204 218 0.67× 0.53×
9.Close-up Lenses (Sold separately)
Attaching a 500D (72mm) Close-up Lens
enables close-up photography.
Magnification will be 0.25
×– 0.10×.
Manual focusing is recommended for accurate
focusing.
¡Close-up Lens 250D cannot...

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Specifications
Focal Length/Aperture50 mm f/1.2Lens Construction6 groups, 8 elementsMinimum Aperturef/16Angle of ViewDiagonal: 46° Vertical: 27° Horizontal: 40°Min. Focusing Distance0.45 m / 1.5 ft.Max. Magnification 0.15 ×  Field of View 164 ×250 mm / 6.5  ×9.8 inch (at 0.45 m)Filter Diameter 72 mm / 2.8 inchMax. Diameter and Length85.8 ×65.5 mm / 3.4  ×2.6 inchW eight  590 g / 20.8 oz Hood ES-78Lens CapE-72U/E-72 II
Case LP1214
¡The lens length is measured from the mount surface to the front end...