Sigma 50mm f2.8 EX DC 18

Sigma 50mm f2.8 EX DC 18 manual

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  • Thank you very much for purchasing a Sigma Lens. In order to get the maximum
    performance and enjoyment out of your Sigma lens, please read this instruction
    booklet thoroughly before you start to use the lens.
    DESCRIPTION OF THE PARTS (fig.1)
    DC LENS
    These are special lenses that are designated for digital cameras because the lens image
    circle is designated to correspond to the size of the image sensors of most digital SLR
    cameras. The specialized design gives these lenses the ideal properties for digital cameras.
    An image sensor element larger than those corresponding to APS-C cannot be used in
    digital cameras or 35mm SLR cameras. If such an element is used vignetting will occur
    on the picture surface.
    If you use SD14 / SD10 / SD9 digital cameras, corresponding angle of view will be
    30-85mm.
    ATTACHING TO CAMERA BODY
    When this lens is attached to the camera body it will automatically function in the same way
    as your normal lens. Please refer to the instruction booklet for your camera body.
    On the lens mount surface, there are a number of couplers and electrical contacts.
    Please keep them clean to ensure proper connection. To avoid damaging the lens, be
    especially sure to place the lens with its front end down while changing the lens.
    Many accessories such as rear mounted teleconverters, extension tubes, etc., are
    specially made for designated lenses. Before you purchase such accessories, please
    check your Sigma lens to determine that it is compatible and that the accessories will
    function properly with it.
    SETTING THE EXPOSURE MODE
    The sigma lens functions automatically after mounting to your camera. Please, refer to the
    camera instruction book.
    FOCUSING AND ZOOMING
    SIGMA AF and CANON AF
    For autofocus operation, set the focus mode switch on the lens to the AF” position (fig.2). If
    you wish to focus manually, set the focus mode switch on the lens to the Mposition. You
    can adjust the focus by turning the focus ring.
    NIKON AF and FOUR THIRDS
    For autofocus operation, set the camera to AF mode and set the focus mode switch on the
    lens to the AF position (fig.2). If you wish to focus manually, set the focus mode switch on
    the lens to the Mposition. You can adjust the focus by turning the focus ring. (In the case
    of Four-Thirds cameras it is necessary to switch the camera to MF mode as well)
    SONY AF and PENTAX AF
    For autofocus operation, set the cameras focus mode to AF. If you wish to focus manually,
    set the camera’s focus mode to “M” and adjust the focus by turning the focus ring.
    Please refer to cameras instruction manual for details on changing the camera’s
    focusing mode.
    The viewfinder of some Nikon AF cameras have indicators to display the focus status.
    The “ symbol indicates that correct focus has been set,
    indicates that focus is
    set in front of the subject, and “
    indicates that focus is set behind the subject. When
    this AF lens is used with Nikon AF cameras in MF mode, please adjust the lens’ focus
    until the symbol is visible.
    To avoid damaging AF mechanism, please do not turn the focus ring manually while in
    the autofocus mode.
    When operating this lens in manual focus mode, it is recommended that correct focus be
    confirmed visually in the viewfinder rather than relying on the distance scale. This is
    due to possible focus shift resulting from extreme changes in temperature which cause
    various components in the lens to expand and contact. Special allowance is made for
    this at the infinity setting.
    In the case of Four Thirds lenses, the function of AF-S mode with MF override is not
    available.
    Zooming
    Rotate the Rubber grip on the zoom ring to the desired position.
    Zoom Lock Switch
    This lens is also equipped with Zoom Lock Switch to eliminate the zoom creep when the
    lens is tilted down. Please set zooming ring to 18mm and set the zoom lock switch to the
    “LOCK” position. (fig.3)
    MAGNIFICATION
    The indication of the lens as 1:xxon a focusing distance scale represent the magnification
    (commonly called the reproduction ratio). For example when you are in focus at the 1:3”
    position on the scale, a subject with an actual size of 3cm will have an image size of 1cm
    on the firm. (fig.4)
    LENS HOOD
    A bayonet type detachable hood is provided with the lens. This lens hood helps to prevent
    flare and ghosted images caused by bright illumination from outside the picture area.
    Attach the hood and turn clockwise until it stops rotation. (fig.5)
    When taking photographs using the built-in flash, it is advisable to remove the lens hood so
    as to avoid cutting off any of the flash output, which could cause a shadow in the picture.
    In order to place the lens and hood into the storage case, you must first remove the
    hood, then replace it on the lens in the reverse position. (fig.6)
    FILTER
    Only one filter should be used at the time. Two or more filters and/or special thicker
    filters, like a polarizing filter, may cause vignetting.
    When using a polarizing filter with AF camera, use the “circulartype.
    BASIC CARE AND STORAGE
    Avoid any shocks or exposure to extreme high or low temperatures or to humidity.
    For extended storage, choose a cool and dry place, preferably with good ventilation. To
    avoid damage to the lens coating, keep away from mothballs or naphthalene gas.
    Do not use thinner, benzine or other organic cleaning agents to remove dirt or finger prints
    from the lens elements. Clean by using a soft, moistened lens cloth or lens tissue.
    This lens is not waterproof. When you use the lens in the rain or near water, keep it
    from getting wet. It is often impractical to repair the internal mechanism, lens elements
    and electric components damaged by water.
    Sudden temperature changes may cause condensation or fog to appear on the surface
    of the lens. When entering a warm room from the cold outdoors, it is advisable to keep
    the lens in the case until the temperature of the lens approaches room temperature.
    TECHNICAL SPECIFICATIONS
    Lens construction
    13 – 15
    Angle of View
    69.327.9°
    Minimum Aperture
    22
    Minimum Focusing Distance
    0.2m (0.65 ft)
    Magnification
    1:3
    Filter Size
    72mm
    Dimensions Dia.×Length
    79×85.7mm (3.11×3.37 in)
    Weight
    450g (15.9 oz)
    Dimensions and weight include the SIGMA mount.
    The CE Mark is a Directive conformity mark of the European
    Community (EC).
    SIGMA (Deutschland) GmbH Carl-Zeiss-Str. 10/2, D-63322 Rödermark, F.R.GERMANY
    Verkauf: 01805-90 90 85-0 Service: 01805-90 90 85-85 Fax: 01805-90 90 85-35
    Filter Attachment Thread
    Focus Ring
    Distance Scale
    Focus Index Line
    Zoom Ring
    Focus Mode Switch
    (SIGMA SA / CANON AF / NIKON / FOUR THIRDS)
    Mount
    Lens Hood
    Zoom Lock Switch
    ENGLISH

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Sigma 50mm f2.8 EX DC 18 specifikationer

Mærke Sigma
Model 50mm f2.8 EX DC 18
Produkt Linse
Sprog Engelsk
Filtype PDF

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