Canon 1257B002 User Manual

EF50mm f/1.2L USM  
ENG  
Instruction  
a Safety Precautions  
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 class B digital device, pursuant to part 15 of the FCC  
Rules. se limits are designed to provide reasonable protection  
st hamful interference in a residential installation. This  
ment generates, uses and can radiate radio frequency  
enrgy and, if not installed and used in accordance with the  
nstructions, 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:  
a Safety 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 in
a warm one, condensation may develop on the  
lens surface and internal parts. To preven
condensation in this case, first put the lens into an  
airtight plastic bag before taking it from a cold to  
warm environment. Then take out the lens after it  
has warmed gradually. Do the same when taking  
the lens from a warm environment into a cold one.  
• Do not leave the lens in excessive heat such as in  
a car in direct sunlight. High temperatures can  
cause the lens to malfunction.  
• 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.  
ENG-2  
Nomenclature  
Distance scale (5, 6)  
Infrared index (6)  
Hood mount (7)  
Depth-of-Field scale (6)  
Filter mounting  
thread (7)  
Focus mode switch (5)  
Contacts (4)  
Focusing ring (5)  
Lens mount index (4)  
For detailed information, reference page numbers are provided in parentheses (**).  
ENG-3  
1. Mounting and Detaching the Lens  
See your camera’s instructions for details on  
mounting and detaching the lens.  
The lens mount has a rubber ring for enhanced  
water- and dust-resistance. The rubber ring may  
cause slight abrasions around the camera's lens  
mount, but this will not cause any problems. If the  
rubber ring becomes worn, it is replaceable by a  
Canon Service Center at cost.  
¡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 ens  
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 with the dust  
cap. To attach it properly, align the lens mount  
index and the  
K
index of the dust cap as shown  
in the diagram, and turn clockwise. To remove it,  
reverse the order.  
ENG-4  
2. Setting the Focus Mode  
3. Infinity Compensation Mark  
Infinity compensation mark  
Distance index  
To shoot in autofocus (AF) mode, set the focus  
mode switch to AF.  
To use only manual focusing (MF), set the focus  
mode switch to MF, and focus by turning the  
focusing ring. The focusing ring always works,  
regardless of the focus mode.  
To compensate for shifting of the infinity focus  
point tt results from changes in temperature.  
infiny position at normal temperature is the  
pint at which the vertical line of the L mark is  
aligned with the distance indicator on the  
distance scale.  
After autofocusing in ONE SHOT AF mode, focus  
manually by pressing the shutter button halfway and  
turning the focusing ring. (Full-time manual focus)  
For accurate manual focusing on subjects at  
infinity distance, look through the viewfinder while  
rotating the focusing ring.  
ENG-5  
4. Infrared Index  
5. Depth-of-Field Scale  
The infrared index corrects the focus setting  
when using monochrome infrared film. Focus on  
the subject manually, then adjust the distance  
setting by moving the focusing ring to the  
corresponding infrared index mark.  
The deth of field is the distance in front of and  
behind he plane of focus on the subject that  
ears harp. The depth of field is indicated by  
tarea 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.  
Some EOS cameras cannot use infrared film. Se  
the instructions for your EOS camera.  
The depth-of-field scale is an approximate  
indicator.  
¡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.  
ENG-6  
6. Hood  
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  
lehood.  
The ES-78 hood can keep unwanted light out of  
the lens, and also protects the lens from rain,  
snow, and dust.  
Attach and align the hood to the hood mount
the front of the lens, and turn the hood as sho
by the arrow to secure it.  
The hood can be reverse-mounted on the lens  
for storage.  
¡Part of the picture may be blocked if the hood is  
not attached properly.  
¡When attaching or detaching the hood, grasp  
the base of the hood to turn it. To prevent  
deformation, do not grasp the rim of the hood to  
turn it.  
ENG-7  
8. Extension Tubes (Sold separately)  
9. Close-up Lenses (Sold separately)  
You can attach Extension Tube EF12 II or EF25  
Attaching a 500D (72mm) Close-up Lens  
II for magnified shots. The shooting distance and enables close-up photography.  
magnification are shown below.  
Magnification will be 0.25× – 0.10×.  
Camera-to-Subject  
Distance (mm)  
¡Close-up Lens 250D cannot be attached  
because there is no size that fits the lens.  
¡Manual focusing is recommended for accurate  
focusing.  
Magnification  
Near  
246  
204  
Far  
322  
218  
Near  
Far  
EF12 II  
EF25 II  
0.39×  
0.67×  
0.24×  
0.53×  
Manual focusing is recommended for accurate  
focusing.  
ENG-8  
Specifications  
Focal Length/Aperture  
Lens Construction  
Minimum Aperture  
Angle of View  
Min. Focusing Distance  
Max. Magnification  
Field of View  
Filter Diameter  
Max. Diameter and Length  
Weight  
50 mm f/1.2  
6 groups, 8 elements  
f/16  
Diagonal: 46°  
0.45 m / 1.5 ft.  
0.15 ×  
Vertical: 27°  
Horizontal: 40°  
164 × 250 mm / 6.5 × 9.8 inch (at 0.45 m)  
72 mm / 2.8 inch  
85.8 × 65.5 mm / 3.4 × 2.6 inh  
590 g / 20.8 oz  
Hood  
ES-78  
Lens Cap  
E-72U/E-72 II  
Case  
LP1214  
¡The lens length is measured from the mount urfce to the front end of the lens. Add 21.5 mm to include the  
E-72U lens cap and dust cap, and 24.2 mm for the E-72 II.  
¡The size and weight listed are for the lens only, except as indicated.  
¡The EF1.4X II/EF2X II extenders cannot be used with this lens.  
¡Aperture settings are specified on the camera.  
¡All data listed is measured according to Canon standards.  
¡Product specifications and appearance are subject to change without notice.  
ENG-9  
CT1-8544-004  
0812Ni  
© CANON INC. 2006  

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