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Members News Monthly Image Competition April 2012 |
17/01/12
The Sigma Corporation is pleased to announce the new Sigma APO Macro 180mm F2.8 EX DG OS HSM.
This is the world’s first 180mm macro lens incorporating a
magnification ratio of 1:1 and a large maximum aperture of F2.8. It
benefits from Sigma’s original Optical Stabiliser function and the wide
F2.8 aperture allows faster shutter speeds for narrow depth of field,
enabling photographers to emphasize the subject. Three FLD (“F” Low
Dispersion) glass elements provide excellent correction for colour
aberrations. This lens incorporates Sigma’s floating inner focusing
system which minimises aberrations that occur as shooting distances
change and enables stable rendering of the image from infinity to 1:1
magnification. The Super Multi-Layer Coating reduces flare and ghosting
and provides sharp and high contrast images even at the maximum
aperture.
Equipped with Sigma’s own propriety OS (Optical Stabiliser) system, this
lens offers the use of shutter speeds approximately 4 stops slower than
would otherwise be possible*, enabling handheld close-up photography.
The incorporation of HSM (Hyper Sonic Motor) ensures quiet and high
speed autofocus as well as full-time manual focus capability. This lens
has a rounded 9 blade diaphragm creating an attractive blur to the out
of focus areas of the image. At 1:1 magnification, this lens has a
focusing distance of 47cm/18.5in which is a greater working distance
than shorter focal length macro lenses. This is advantageous when taking
pictures of highly sensitive subjects such as butterflies and insects.
Attaching Sigma’s optional Tele Converter’s allows photographers to
shoot with an even greater working distance or with a magnification
ratio larger than 1:1.
Supplied with fitted case, bayonet type hood (LH927-01), hood adapter
(HA927-01) and tripod socket (TS-21)
*The effectiveness of the OS system will gradually decrease as
the shooting distance becomes shorter.
THE SPECIFICATIONS
Minimum Aperture F22
Minimum Focusing Distance 47cm
Lens Construction 19 Elements in 14 Groups
Maximum Magnification 1:1
Angle of View 13.7°
Filter Size 86mm
No. of Diaphragm Blades 9 pcs
SRP TBA
Weight TBA
Dimensions Diameter 95mm x Length 203.9mm
Available fittings Sigma, Canon and Nikon
The appearance and specification are subject to change without notice.
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