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Canon lens EF 2470mm f4L IS USM User Manual

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    ●●The magnification of this lens is determined by 
    the combination of the following three factors: 
    the focusing ring position, zoom ring position, 
    and focusing distance. Therefore, the number 
    of combinations for achieving a certain level 
    of magnification is countless. The method for 
    close-up shooting described here involves trying 
    as much as possible to keep the focus position 
    within the range indicated by the yellow line on 
    the distance scale. However, please keep in 
    mind that this is just one method of many.
    ●● To check depth of field, please use the camera’s 
    depth of field function.
    ●● For information on taking hand-held close-ups, 
    please refer to page 15.●●Please focus carefully since the depth of field 
    with close-ups is shallow. 
    ●● The focusing ring distance scale is designed to 
    display distances during normal shooting. As a 
    result, it does not display distances during close-
    up shooting.
    ●● When the zoom ring is set to the macro range, 
    there are cameras that will record the focal 
    length information into the image at a value 
    between the range from above 70 mm to 80 mm 
    due to system issues.* However, the actually 
    focal length will never exceed 70 mm.
    Close-up Shooting
    * Depending on cameras.
    7. Exposure during Close-up Shooting
    ●●The correct exposure for a close-up shot largely 
    depends on the subject. Therefore, try to bracket 
    the exposure for the same subject.
    ●● Using aperture-priority AE (Av) or Manual (M) 
    picture-taking modes are recommended for 
    macro photography as it is easy to adjust depth 
    of field and exposure in these modes.
    Setting the Exposure
    When taking photographs using TTL metering, 
    no exposure compensation is necessary to 
    meter the light coming through the lens.  
    With TTL metering, AE (autoexposure) is 
    possible at all focusing distances. Just set the 
    desired picture-taking mode, then check the 
    shutter speed and aperture before taking the 
    Magnification and Effective 
    The aperture displayed by the camera assumes 
    that the focus is set to infinity. The actual 
    aperture (effective f-number) becomes darker 
    (effective f-number increases) at closer focusing 
    distances (magnification increases). This does 
    not cause exposure problems for normal picture-
    taking. However, for closeup photography, 
    you cannot ignore the change in the effective 
    f-number. When you use a handheld exposure meter to 
    set the exposure, you must take into account the 
    exposure factor shown in the following table.
    Magnification 1 : 5 1 : 3 1 : 2 1 : 1.5
    Effective f/No. 4.71 5.06 5.66 5.66
    Exposure Factor 
    +1/3 +2/3 +1 +1
    +1/2 +1/2 +1 +1
    * Upper values: 1/3 stops. Lower values: 1/2 stops.
    8.  Infinity Compensation 
    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. 
    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 mark
    * For cameras with Live View shooting capability.
    9. 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.
    10. Image Stabilizer
    You can use the image stabilizer in AF or MF mode.This function provides optimal image stabilization depending on 
    shooting conditions (such as shooting still subjects, following 
    shots, and close-up shooting).
    The image stabilizer in this lens is 
    effective for hand-held shots under the 
    following conditions.
    ●●Close-up shooting.
    ●● In semi-darkened areas such as 
    indoors or outdoors at night.
    ●● In locations where flash 
    photography is prohibited, such as 
    art museums and theater stages.
    ●● In situations where your footing is 
    ●● When panning subjects in motion.
    ●● In situations where fast shutter 
    settings cannot be used. 
    2 When you press the 
    shutter button halfway, the 
    Image Stabilizer will start 
    ●●Make sure the image in the 
    viewfinder is stable, then 
    press the shutter button the 
    rest of the way down to take 
    the picture.
    1 Set the STABILIZER 
    to ON.
    ●●The Hybrid IS is activated 
    during close-up shooting (see 
    page 8) which provides highly 
    effective image stabilization.
    ●● If you are not going to use the 
    image stabilizer function, set 
    the switch to OFF. 
    ●●When shooting a still subject, it compensates for 
    camera shake in all directions.
    ●● It compensates for vertical camera shake during 
    following shots in a horizontal direction, and 
    compensates for horizontal camera shake during 
    following shots in a vertical direction.
    ●● When you use a tripod, the Image Stabilizer 
    should be turned off to save battery power.
    ●● The stabilizer is equally effective for hand-
    held photography and photography with a 
    monopod. The Image Stabilizer effect may be 
    reduced, however, depending on the shooting 
    ●● The image stabilizer function also operates when 
    the lens is used with an Extension Tube EF12 ll 
    or EF25 ll.
    ●● Pictures may look distorted after being taken 
    depending on the camera, but this doesn’t affect 
    ●● If you set the camera’s Custom Function to 
    change the assigned button to operate the AF, 
    the Image Stabilizer will operate when you press 
    the newly assigned AF button.●●The shorter the subject distance from the 
    camera, the lesser the Image Stabilizer effect 
    will be.
    ●● The Image Stabilizer cannot compensate for a 
    blurred shot caused by a subject that moved.
    ●● Set the STABILIZER switch to OFF when you 
    are taking pictures using the Bulb setting (long 
    exposures). If the STABILIZER switch is set to 
    ON, the image stabilizer function may introduce 
    ●● The Image Stabilizer may not be fully effective 
    if you shoot from a violently shaking vehicle or 
    other transportation.
    ●● The Image Stabilizer consumes more power than 
    normal shooting, so fewer shots can be taken if 
    you use the function.
    ●● The image stabilizer operates for about two 
    seconds even when your finger is off the 
    shutter button. Do not remove the lens while 
    the stabilizer is in operation. This will cause a 
    ●● With the EOS-1V/HS, 3, ELAN 7E/ELAN 
    7/30/33, ELAN 7NE/ELAN 7N/30V/33V, ELAN 
    II/ELAN IIE/50/50E, REBEL 2000/300, IX, and 
    D30, the Image Stabilizer will not work during 
    self-timer operation.
    Image Stabilizer
    The magnification refers to the ratio between the 
    subject’s size and the corresponding image size on 
    the focal plane.
    11.  Image Stabilization during Close-up Shooting
    For normal close-up shooting, the higher the 
    magnification, the faster the shutter speed must 
    be to prevent blur caused by camera shake. 
    Although it depends on the shooting conditions, 
    usually the shutter speed must be at least one 
    or two stops faster than normal. 
    The EF24-70mm f/4L IS USM is installed with 
    an Image Stabilizer that gives the equivalent 
    effect of a shutter speed approximately 3 steps 
    faster when shooting at a magnification of 
    0.5x, and approximately 2.5 steps faster when 
    shooting at 0.7x.*
    * Depending on shooting conditions.
    12.  Taking Hand-held Close-ups
    Close-up shots are more prone to be affected by 
    camera shake than with normal shooting. The 
    Image Stabilizer’s corrective effect is therefore 
    less during close-ups than during normal 
    shooting even with the same degree of camera 
    The depth of field also becomes very shallow 
    with close-ups, and moving forward or back 
    even slightly will throw off the focus.
    When hand-holding the camera for close-up 
    shooting, minimize camera shake and blurred 
    focus with the following techniques:
    Hold the camera firmly
    As shown on the right, hold the camera firmly so 
    it does not move while shooting.
    Use AI Servo AF
    For close-up shots, set the camera’s AF mode to 
    AI Servo AF. Using autofocus is recommended.
    The AI Servo AF mode can minimize blurred 
    focus during close-up shooting.
    For details, see the camera’s instruction manual.
    Place both elbows on a steady surface such as a table.Use your knee to support 
    an arm holding the 
    camera. Lean against a steady 
    object like a wall.
    13. Hood
    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 hood’s 
    stop position mark.●Removing
    To remove the hood, hold down the button on 
    the side and turn the hood in the direction of the 
    arrow until the position mark on the hood aligns 
    with the red dot. The hood can be reverse-
    mounted on the lens for storage.
    If the hood is not attached properly, vignetting (darkening of the perimeter of the picture) may occur. 
    ●● 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.
    The EW-83L hood cuts out unwanted light and protects the front of the lens from rain, snow, and 
    16.  Extension Tubes 
    (Sold separately)14.  Filters 
    (Sold separately)
    You can attach extension tube EF12 II or EF25 
    II for magnified shots. The shooting distance 
    and magnification are shown below.
    An extension tube cannot be used when the zoom 
    ring is set to macro.
    MF mode is recommended for accurate focusing.
    Focusing Distance Range (mm)Magnification (×)Close distance Long distance Close distance Long distance
    EF12 II 24mm163 174 0.63 0.5070mm258 523 0.44 0.18
    EF25 II24mm
    70mm226 332 0.72 0.4
    You can attach filters to the filter mounting 
    thread on the front of the lens.
    ●● If you need a polarizing filter, use the Canon 
    Circular Polarizing Filter PL-C B (77 mm).
    ●● To adjust the polarizing filter, first remove the 
    lens hood.
    15.  Close-up Lenses 
    Attaching a 500D (77mm) Close-up Lens 
    enables close-up photography.
    Magnification will be 0.05x – 0.29x.
    Magnification will be 0.16x – 0.74x within the 
    macro range.
    ●●Close-up Lens 250D cannot be attached 
    because there is no size that fits the lens.
    ●● MF mode is recommended for accurate focusing.
    ●●The lens length is measured from the mount surface to the front end of the lens. Add 24.2 mm 
    when including the lens cap and dust cap.
    ●● The size and weight listed are for the lens only, except as indicated.
    ●● 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.
    Focal Length/Aperture 24-70mm f/4
    Lens Construction 12 groups, 15 elements
    Minimum Aperture f/22
    Angle of View Diagonal: 84° – 34°, Vertical: 53° – 19° 30′, Horizontal: 74° – 29°
    Min. Focusing Distance
    0.38 m/1.25 ft. (0.2 m/0.66 ft. in the macro range; working distance of approx. 3 cm/1.18 in.)
    Max. Magnification 0.21x (at 70mm); 0.7x in the macro range 
    Field of View
    Approx. 287 x 439 – 115 x 172.5 mm/
    11.30 x 17.28 – 4.53 x 6.79 inch (at 0.38 m/1.25 ft.)
    Filter Diameter 77 mm/3.03 inch
    Max. Diameter and Length 83.4 x 93 mm/3.28 x 3.66 inch
    Weight Approx. 600 g/21.2 oz
    Hood EW-83L
    Lens Cap E-77 II
    Case LP1219
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