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Canon 815mm Owners Manual

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    							EF8-15mm f/4L Fisheye USM
    							ENG-1 6. Manual focusing is available after the subject
    comes into focus in autofocus mode (ONE
    SHOT AF).
    7. A truly round aperture hole results in a nicer
    background blur.
    8. Equipped with a zoom limiter function which
    restricts the zoom range.
    9. Tight seal structure ensures excellent dust-
    proof and drip-proof performance.
    • USM stands for Ultrasonic Motor.
    Conventions used in this instruction
    Warning to prevent lens or camera malfunction
    or damage.
    Supplementary notes on using the lens and
    taking pictures.
    Thank you for purchasing a Canon product.
    The Canon EF8-15mm f/4L Fisheye USM lens is
    a high-performance fisheye zoom lens designed
    for use with Canon EOS cameras.
    1. Designed for use with three different image
    sensor sizes.
    2. Aspherical and UD lens elements result in
    outstanding image delineation.
    3. SWC (Subwavelength Structure Coating) is
    utilized to significantly reduce occurrences of
    flare and ghost created by quite large incident
    angles of light.
    4. A fluorine coating has been applied to the
    lens’s front and rear lens elements which
    allows dust to be wiped from the outside of the
    lens more easily compared with previous
    5. Ultrasonic motor (USM) for quick and quiet
    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
    Handling Cautions•If the lens is taken from a cold environment into
    a warm 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.
    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
    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 receiver.
    •Consult the dealer or an experienced radio/TV technician for
    This Class B digital apparatus complies with Canadian ICES-003. 
    Precautions for Shooting with a Fisheye Lens
    •If dirt or dust adheres to the surface of the front lens element, it can easily appear in images due
    to the lens’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.
    •Since this lens has an extremely 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
    •Depending on shooting conditions, flare and ghost will occur when bright light sources appear in
    the image area. In order to prevent flare and ghost, we suggest shooting places such as shaded
    areas so that bright light does not enter the lens.
    •Unintentional photographing of the user’s body can easily occur during handheld shooting.
    Likewise, the legs of a tripod can be unintentionally photographed when a tripod is used.
    In addition, due to the optical characteristics of this lens, unintentional photographing of objects
    can easily occur since the angle of view exceeds 180° in the close-up shooting range.
    Therefore, please use the camera’s viewfinder or LCD display to carefully check the image area.
    •Since this is an interchangeable lens, the center of the image circle of the circular fisheye and the
    center of the image sensor are out of alignment. Also, there are times when vignetting, which
    occurs in the four corners of an image, is not uniform.
    •It is possible to use AE (Auto Exposure) even if vignetting occurs in the four corners of an image
    when using a circular fisheye effect, etc. However, since the angle of view is extremely wide and
    the luminance range of subjects is broad, we suggest changing the exposure manually when
    Also, it is recommended that users check the image area using the LCD display when shooting
    with a digital camera. 
    Distance scale (→ 9)
    Focus mode switch (→ 6)
    “C” / “H” Indicator (→ 7)Zoom Limiter (→ 7)
    Lens mount index (→ 5) Contacts (→ 5) Hood mount (→ 10)Zoom ring (→ 6)
    Focusing ring (→ 6)
    Gelatin filter holder (→ 12)
    For detailed information, reference page numbers are provided in parentheses (→**). 
    							ENG-5 See your camera’s instructions for instructions on
    mounting and detaching the lens.
    •After detaching the lens, please attach the lens
    hood and lens cap and place the lens with the
    rear end up to prevent the electrical contacts
    and lens surface 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 
    Kindex of the dust cap as shown
    in the diagram, and turn clockwise. To remove it,
    reverse the order.
    1. 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 cameras 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.
    aPlease be careful when laying the lens sideways
    while the lens hood and the lens cap are
    The lens may roll and fall, resulting in injury. 
    3. Zooming
    To zoom, turn the zoom ring.
    Be sure to finish zooming before focusing.
    Changing the zoom ring after focusing can affect
    the focus.
    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.
    2. Setting the Focus
    After autofocusing in ONE SHOT AF mode, focus
    manually by pressing the shutter button halfway
    and turning the focusing ring. (Full-time manual
    “C” and “H” Markings
    Adjacent to the zoom ring, the “C” and “H”
    markings serve as guides to indicate the wide-
    angle zoom position where focus is set at infinity
    at which photos can be created without
    vignetting when using EOS digital cameras
    installed with APS-C or APS-H image sensors.
    The “C”/”H” indicator on the zoom ring is aligned
    with either the “C” or “H” marking.
    Zoom Limiter
    The zoom limiter function allows for wide-angle
    photos to be created when focus is set at infinity
    without vignetting when using an EOS digital
    camera installed with an APS-C image sensor by
    limiting the zoom range.
    Activate the zoom limiter by setting the zoom ring
    to between 10mm and 15mm, then slide the
    switch towards “LIMIT.”
    When the “C” / ”H” indicator above the focus ring
    is aligned with either the “C” or “H” marking, there
    are times when vignetting occurs in the corners of
    an image since the size of the image circle
    becomes smaller when the focus position is set at
    close range due to the optical characteristics of
    this lens.The zoom limiter cannot be used if the zoom ring
    is set between 8mm and about 10mm (when the
    “C” / “H” indicators on the zoom ring are set
    between the “C” indicator and the wide-angle
    direction on the ring next to the zoom ring). 
    • Circular FisheyeThe circular fisheye effect refers to the 180 degree circular angle of view which appears within the area of the image sensor. When the
    focusing distance of this particular lens is set to infinity, the circular fisheye effect is achieved by setting the focal length (wide end) to
    8mm and using a camera equipped with a full frame image sensor.
    • Diagonal FisheyeThe diagonal fisheye effect refers to a 180 degree diagonal angle of view which corresponds with the size of the sensor. When the
    focusing distance of this particular lens is set to infinity, the diagonal fisheye effect is achieved by setting the focal length (telephoto
    end) to 15mm when used with full frame image sensors, approximately 12mm when used with APS-H, and approximately 10mm when
    used with APS-C.
    Description of Fisheye Lens Based PhotographyThe various images below show the different relationships between the fisheye lens’s 180 degree angle of view and the size
    of each image sensor related to focal length.
    Focal Length: 8mm
    * The circle corresponding with each focal length indicates a 180 degree angle of view in the imaging area.
    * Vignetting occurs in the area outside of the image circle.
    Full Frame 
    Circular FisheyeApprox. 10mm
    Diagonal Fisheye Approx. 12mm
    Diagonal FisheyeFull Frame 
    Diagonal FisheyeApprox. 15mm
    •Use of the zoom limiter at the lens’s wide end position does not guarantee that a diagonal fisheye effect will be
    created when used with APS-C sensors.
    •When the focusing distance is set to infinity, the angle of view when using the lens set at the telephoto end together
    with full frame format cameras is 175°30’ (diagonal). The 180° diagonal fisheye effect is achieved by slightly turning
    the zoom ring toward the wide end when the lens is set at 15 mm (telephoto end).
    •Due to the optical characteristics of the lens, the size of the image circle becomes smaller when the focus position
    is set at close range. 
    4.Infinity Compensation Mark
    Infinity compensation mark
    Distance index
    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.
    For accurate manual focusing on subjects at
    infinity distance, turn the focus ring while looking
    through the viewfinder or checking the camera’s
    LCD display.
    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 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 also when you take the picture.
    5. Infrared Index
    Some EOS cameras cannot use infrared film. See
    the instructions for your EOS camera. 
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