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)
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 or SD10 or SD9 digital camera, corresponding angle of view
will be 30-425mm.
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.
This lens is powered from the camera. The stabilizer unit will be placed to a specific
in the lens body and then shooting will be possible (stabilizer unit will
switch to active
status) regardless of the OS Switch position. The active status will
take approximately a
minute from turning the camera on or depressing the shutter
◆The image in the viewfinder looks like it is vibrating after the camera is turned
on or turned off. This is not a malfunction.
◆If you fix the camera with the tripod or another method, please determine the
composition when the stabilize unit is in the active status. The composition
seen through the viewfinder will be different depending on the power status of
the camera. If the active status is cancelled, please press the shutter button
SETTING THE EXPOSURE MODE
The sigma lens functions automatically after mounting to your camera. Please,
refer to the camera instruction book.
FOCUSING AND ZOOMING
For autofocus operation, set the focus mode switch on the lens to “AF” position.
If you wish to focus manually, set the focus mode switch on the lens to the “MF”
position. You can adjust the focus by turning the focus ring.
◆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.
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.2)
The indication of the lens as “1:xx” on a focusing distance scale represent the
magnification (commonly called the reproduction ratio). For example when you
are in focus at the “1:3.4” position on the scale, a subject with an actual size of
3.4cm will have an image size of 1cm on the firm. (fig.3)
ABOUT OS (OPTICAL STABILIZER) FEATURES
This OS lens effectively compensates for image blurring caused by camera
shake. Using the Optical Stabilizer function it is possible to get sharp results at
shutter speeds approximately 4 stops slower than you could without using the
Set the OS switch to ON (fig.4). Press the shutter button halfway down, confirm
the image in the viewfinder is stable then take the picture. (It takes
approximately 1 second to produce a stable image from the time of depressing
the shutter button halfway).
◆Do not use the Optical Stabilizer in the following situations:
▪ When the lens is mounted on a tripod. ▪ When using the camera in Bulb
The Optical Stabilizer function is powered from the camera. If the OS lens is
attached to your camera and activated, shooting capacity of your camera will
be lower than with conventional lenses used with the same camera. If you are
not using OS, please turn
switch, in order to prevent unnecessary
◆Be sure to turn the OS switch to the OFF position before attaching or
detaching the lens to the camera.
◆The OS continues to operate after you release your finger from the shutter
button, as long as the exposure meter displays the exposure value. Never
remove the lens or remove the camera’s battery while the image stabilizer is
operating as this could damage the lens.
◆Although the viewfinder image may appear to shake immediately after
shooting and/or at the start of the flash charge cycle of the camera’s built-in
flash, it will not cause any effect to the pictures.
◆If the lens is detached from camera or the camera power is turned off while
the OS function is in operation, the lens may emit a chattering noise, but this
is not a malfunction.
◆For Sony and Pentax mounts, it is only possible to use the OS function,
incorporated in this lens, with camera bodies which support motors driven by
ultrasonic waves such as HSM. When using the OS function, please turn off
the optical stabilizer function of the camera body and set the OS switch of the
lens to ON. When using the camera’s optical stabilizer function, please set
the OS switch of the lens to OFF and turn the camera’s optical stabilizer
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)
◆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 “circular” type.
BASIC CARE AND STORAGE
◆Avoid any shocks or exposure to extreme high or low temperatures or to
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
Do not use thinner, benzine or other organic cleaning agents to remove dirt or
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.
Lens construction 14 – 18 Magnification 1:3.4
Angle of View 69.3 – 5.7° Filter Size 72mm
Minimum Aperture 22
Minimum Focusing Distance
0.45m (1.48 ft) Weight 630g (22.2 oz)
Dimensions and weight include the SIGMA mount.
Filter Attachment Thread
Focus Index Line
⑥Focus Mode Switch
⑧Zoom Lock Switch
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