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Canon lens EF 1124mm f4L USM User Manual

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    							EF11-24mm f/4L USM
    Thank you for purchasing a Canon product.
    Canon’s EF11-24mm f/4L USM is a high-
    performance ultra-wide angle zoom lens, for use 
    with EOS cameras.
     ●“USM” stands for Ultrasonic Motor.
    1. Use of super UD lens elements, UD lens 
    and two types of aspherical lens 
    elements giving superior definition.
     SWC (Subwavele
    ngth Structure Coating) 
    and ASC (Air Sphere Coating) are utilized to 
    significantly reduce occurrences of flare and 
    ghost created by quite large incident angles of 
     Using a 
    fluorine coating on the foremost and 
    rearmost lens surfaces allows adhered dirt to be 
    removed more easily than before.
     Ultrasonic motor 
    (USM) for fast, quiet autofocus.
    focusing is available after the subject 
    comes into focus in autofocus mode (ONE 
    SHOT AF).
    aperture for producing beautiful 
    softfocus images.
    seal structure provides excellent dustproof 
    and drip-proof performance. However, it is 
    unable to provide complete protection from dust 
    and moisture.
     Safety Precautions
     Safety Precautions
     ●Do not look at the sun or a bright light source 
    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.
     ● The EF1
    1-24mm f/4L USM features a large diameter 
    front lens element. Please be careful because this 
    large front section will extend past the bottom of some 
    Conventions used in this instruction
     Warning to prevent lens or camera malfunction 
     Supplementary notes  on using the lens and 
    taking pictures.
    Handling Cautions
     ● If the lens is taken from a cold environment into a 
    one, condensation may develop on the lens 
    surface and internal parts. To prevent 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.
    Usage Precautions
     ● When using this lens, please check the Canon website 
    the latest camera firmware. If the camera’s firmware 
    is not the latest version, be sure to update to the latest 
     ● For details 
    on updating firmware, please check the 
    Canon website.
    Precautions for Shooting
     ●If dirt or dust adheres to the surface of the front lens element, it can easily appear in images due to the 
    ens’s short focal length. In order to avoid this, please remove dirt or dust from the surface of the front lens 
    element by using a commercially available air dust blower.
     ● Si
    nce this lens has a wide angle of view, light from bright light sources, such as the sun, can easily enter 
    the image area. Please do not look at bright light sources using the camera’s viewfinder.
     ● Si
    milarly, flare and ghost will occur when bright light sources appear in the image area, depending on 
    shooting conditions. In order to prevent flare and ghost, we suggest shooting places such as shaded are 
    as so that bright light does not enter the lens.
    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 
     Connect the 
    equipment into an outlet on a circuit different 
    from that to which the receiver is connected.
     Consult the 
    dealer or an experienced radio/TV technician 
    for help.
     Safety Precautions
    CAN ICES-3 (B) / NMB-3 (B)
     ● For detailed information, reference page numbers are provided in parentheses (→  **).
    Focus mode switch (→ 7)
    Distance scale (→ 8)Zoom ring (→ 7)
    Rubber ring (→ 6)
    Gelatin filter holder (→ 9)
    Contacts (→ 6)
    Lens mount index (→ 6)
    Focusing ring (→ 7)Built-in lens hood
    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 dust- and water-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 
    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 with the dust 
    cap. To attach it properly, align the lens mount 
    index and the   index of the dust cap as shown 
    in the diagram, and turn clockwise. To remove it, 
    reverse the order.
    Please be careful when laying the lens 
    sideways. The lens may roll and fall, resulting 
    in injury.
    2. Setting the Focus Mode3.  Zooming
    After autofocusing in ONE SHOT AF mode, focus manually by pressing the shutter button halfway 
    and turning the focusing ring. (Full-time manual 
    To shoot in autofocus (AF) mode, set the focus 
    mode switch to AF.
    To shoot in manual focus (MF) mode, 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 zoom, rotate the zoom ring.
    Also, the minimum focusing distance of the lens 
    changes depending on focal length.
    Focal Length 
    (mm) Min. Focusing 
    Distance (m/ft) Magnification (×)
    11 0.32 / 1.05 0.06
    16 0.29 / 0.95 0.10
    24 0.28 / 0.92 0.16
     ●Be sure to finish zooming before focusing. 
    after focusing can affect the focus. 
     ●Zooming in 
    causes the front lens assembly to 
    extend along the lens’s optical axis. This adds 
    to the weight of the lens assembly, so pointing 
    it up or down when zooming in may increase or 
    decrease the torque felt in the zoom ring.
    4. InfinityCompensation
    For accurate manual focusing of subjects at infinity, 
    look through the viewfinder or look at the magnified 
    image* on the LCD screen while rotating the 
    focusing ring.
    To compensate for shifting of the infinity focus 
    point that results from changes in temperature, 
    there is a margin at the infinity (∞) position.
    The infinity position at normal temperature is the 
    point at which the vertical line of the distance 
    scale L mark is aligned with the distance index.
    Distance indexInfinity compensation 
    * For cameras with Live View shooting capability.
    5. Infrared Index
    The infrared index position is based on a 
    wavelength  of 800 nm.
     ●The compensation 
    amount differs depending on 
    the focal length. Use the indicated focal length 
    as a guide when setting the compensation 
     ● 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.
    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.
    6. Lens Cap
    The lens cap can be attached by pinching the 
    lock knobs and vertically aligning the lens cap 
    with the lens hood as shown in the diagram.There is a gelatin filter holder at the rear of the 
    lens. Cut the gelatin filter to fit within the white 
    frames. Then insert the gelatin filter into the filter 
    7. Filter (Sold separately)
    The recessed sections of the lens hood that the 
    cap locks on to are located at the front inside edge 
    of the top and bottom petals.
    Lock knobs
    The lens’s rear lens group moves back toward the rear of the lens (camera side) the most when the 
    lens is set to the wide end. Therefore, in order to 
    prevent the rear lens element from making contact 
    with a filter (when installed), we recommend using 
    a filter only if the zoom ring is not set to the wide 
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