Canon lens EF 28300mm f3556L IS USM User Manual

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8.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. 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 intermediate markers between 300 and 100
are 200mm and 135mm, and the marker
between 100 and 50 is 70mm.
9. Infrared Index
•
The infrared index position is based on a
wav elength of 800 nm.
• The compensation amount differs depending on
the focal length. Use the indicated focal length as
a guide when setting the compensation amount.
• Be sure to observe the manufacturer’s
instructions when using infrared film.
• Use a red filter when you take the picture.
Some EOS cameras cannot use infrared film. See
the instructions for your EOS camera.For accurate manual focusing on subjects at infinity
distance, look through the viewfinder while rotating
the focusing ring.
Infinity Compensation Mark
Distance index
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10. Using the Tripod Mount
Adjusting the Revolving MountYou can loosen the orientation lock-knob on the tripod mount to allow it to rotate as needed to fit a
particular camera model for switching between vertical and horizontal positions.
DetachingUse the following procedures to remove and attach the tripod mount.
Turn  the locking knob
counterclockwise until it
becomes loose (about 3
turns), and pull the knob in
the direction of the arrow to
release the collar.
With the collar open,
remove the tripod mount.To   install, while pulling the
locking knob, bring the collar
to the original position, and
tighten the locking knob
securely.
The tripod collar can be attached to or detached from the lens while the lens \
is attached to the camera.
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11. Hood
The EW-83G hood can keep unwanted light out
of the lens, and also protects the lens from rain,
snow, and dust.
To  attach the hood, align the hood’s attachment
position mark with the red dot on the front of the
lens, then turn the hood as shown by the arrow
until the lens red dot is aligned with the hoods
stop position mark.
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.
Y ou can attach filters to the filter mounting thread
on the front of the lens.
12. Filters (Sold Separately)
• Only one filter may be attached.
• If you need a polarizing filter, use the Canon
Circular Polarizing Filter (77mm).
•T o adjust the polarizing filter, first remove the lens
hood.
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13.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 28mm 265 277 0.50×
0.43×
300mm 604 7594 0.39 ×0.04×
EF25 II 28mm
Incompatible
300mm 541 3730 0.50 ×0.09×
Manual focusing is recommended for accurate
focusing.
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Specifications
Focal Length/Aperture28 – 300 mm f/3.5 – 5.6Lens Construction16 groups, 23 elementsMinimum Aperturef/22 – 40 *Angle of ViewDiagonal: 75° – 8° 15’ Vertical: 46° – 4° 35’ Horizontal: 65° – 6° 50’Min. Focusing Distance0.7 m/2.3 ft.Max. Magnification 0.3 × (at 300 mm)Field of View approx. 436 ×651 – 81  ×121 mm/17.2 × 25.6 – 3.2 ×4.8 inch (at 0.7 m )Filter Diameter 77 mm/2.8 inchMax. Diameter and Length92 ×184 mm/3.6  ×7.2 inchW eight 1670 g/58.9 ozHood EW-83GLens CapE-77U/E-77 II
Case LZ1324
*Applies to 1/3-stop increments. With 1/2-stop increments, it will be f/22-38.
• The lens length is measured from the mount surface to the front end of the lens. Add 21.5 mm to include the
E-77U lens cap and dust cap, and 24.2 mm for the E-77 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.
Attaching a 500D (77 mm: Sold separately) Close-up Lens enables close-up photography. Magnification will be
0.06x – 0.58x. Close-up Lens 250D cannot be attached because there is no size that fits the lens. Manual
focusing is recommended for accurate focusing.
• Aperture settings are specified on the camera. The camera automatically compensates for variations in the
aperture setting when the camera is zoomed in or out.
• All data listed is measured according to Canon standards.
• Product specifications and appearance are subject to change without notice.
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							©CANON INC. 2004
CT1-8515-0040812Ni
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