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Overview: The Sigma AF 18-250mm F3.5-6.3 DC Macro HSM (Model
#883) is a multi-purpose 13x zoom lens that covers wide angle to telephoto to macro
photography. The lens is designed to be used with cameras with APS-C size
sensors. It is a
great lens for travel, landscapes, family, and nature and wildlife, as well as
macro photography. The lens has the Canon EF-mount, and comes with a padded
carrying case, lens hood, and front & rear caps.
Lens Hood: The 18-250mm lens includes a lens hood to help
prevent stray light from entering the lens, causing flare, and to protect the
lens from rain, snow, and dust. When not in use, the lens hood can be inverted
and mounted onto the lens backwards for storage.
Optical Stabilization: The Optical Stabilization lens
effective compensates for image blurring caused by camera shake. Using the
Optical Stabilizer, you can get sharp results at shutter speeds approximately 4
stops slower than you could without the OS function.
Focus Mode Switch: The lens features a two-way switch for
setting the focus mode: AF (auto focus) or MF (manual focus).
Sigma Technology: The lens has the following Sigma
- Thermally Stable Composite (TSC): The lens utilizes a
thermally stable composite material in the lens barrel, which has a high
degree of elasticity, and exhibits little variation in its structure in
extreme temperature conditions.
- Hyper Sonic Motor (HSM): The Hyper Sonic Motor uses
ultrasonic waves to drive the autofocus mechanism. This extremely quiet
operation helps avoid disturbing photographic subjects, and isn't picked up
by the microphone while recording video.
- Super Multi-layer Coating: Sigma's own Super
Multi-layer Coating suppresses lens flare and ghosting by preventing
reflections within the lens.
- Rounded Diaphragm: Using a rounded diaphragm instead of
a polygonal shaped one produces pleasingly rounded out-of-focus light points
when opened to near maximum aperture.
- Lens Construction: 16 Elements in 13 Groups
- Angle of View: 76.5° to 6.5°
- Number of Diaphragm Blades: 7
- Maximum Aperture: f/3.5 (18mm), f/6.3 (250mm)
- Minimum Aperture: f/22
- Minimum Focusing Distance: 13.8"
- Filter Size: 62mm
- Maximum Magnifications: 1:2.9
- Dimensions: Diameter=2.919", Length=3.656"
- Weight: 16.6 ounces