Overview: The Sigma 50mm F1.4 EX DG HSM is a fast, standard
prime lens, designed to be used with full-frame cameras. It can also be used
with cameras with APS-C size image sensors, and has an equivalent focal length
of 75mm. It is a great lens for taking portraits, as well as for travel,
weddings, and other events. The lens has the Nikon bayonet-mount.
Lens Hood: The Sigma 50mm 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.
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
- Aspherical Lens: Aspherical lenses are used for
outstanding optical performance and to keep the lenses compact.
- 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.
- Inner Focusing System: Sigma uses a focusing system that
only moves elements within the lens barrel to avoid a changing barrel length
as you focus.
- 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.
- Lens Construction: 8 Elements in 6 Groups
- Angle of View: 46.8°
- Number of Diaphragm Blades: 9
- Maximum Aperture: f/1.4
- Minimum Aperture: f/16
- Minimum Focusing Distance: 17.76"
- Filter Size: 77mm
- Maximum Magnifications: 1:7.4
- Dimensions: Diameter=3.325", Length=2.896"
- Weight: 17.8 ounces
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