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This ultra-wide zoom
lens has a wide angle of view from 102.4 - 63.8
degrees (when Sigma mount is used) and it is exclusive
to digital SLR cameras. SLD glass elements effectively
compensate color aberration. Aspherical lenses provide
maximum correction for distortion and various
aberrations; high image quality is displayed
throughout the entire zoom range. The HSM equipped
models makes fast AF speeds and quiet shooting a
reality, and it is also capable of full-time manual
focus. It has a minimum focusing distance of 9.4"
(24cm) at all focal lengths. It is also equipped with
an integral Petal-type hood to block out extraneous
light. |
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Mitt
omdöme
+
EX motor, snabb och tyst. kvaliteten. |
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APO
(APO Lens)
In order to attain the highest quality images, the
APO lens has been made using special
low-dispersion (SLD) glass and is designed to
minimize color aberration. |
HSM (Hyper-Sonic Motor)
This lens uses a motor driven by ultrasonic waves
to provide a quiet, highspeed AF. |
IF (Inner Focus)
To ensure stability in focusing, this lens moves
the inner lens group or groups without changing
the lens' physical length. |
EX (EX Lens)
The exterior of this lens is EX-finished to denote
the superior build and optical quality, and to
enhance its appearance. |
DG (DG Lens)
These are large-aperture lenses with wide angles
and short minimum focusing distances. With an
abundance of peripheral illumination, they are
ideal lenses for Digital SLR Cameras whilst
retaining suitability for traditional 35mm SLRs. |
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Lens Construction |
14
Elements in 10 Groups |
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Angle of View
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102.4 - 63.8
degrees |
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Number of Diaphragm
Blades |
6 |
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Minimum Aperture |
F22 |
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Minimum Focusing
Distance |
24cm/9.4 in. |
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Maximum
Magnification |
1:6.7 |
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Filter Size
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Diameter 77mm |
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Dimensions
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Diameter 83.5mm X
Length 81mm
3.3 in. X 3.2 in. |
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Weight |
465g |
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BILDER |
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