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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
    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
    The tripod collar can be attached to or detached from the lens while the lens \
    is attached to the camera.
    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
    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×
    300mm 604 7594 0.39 ×0.04×
    EF25 II 28mm
    300mm 541 3730 0.50 ×0.09×
    Manual focusing is recommended for accurate
    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.
    							©CANON INC. 2004
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