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Sigma 105mm F2.8 EX DG Macro
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SPECIFICATIONS:
MACRO 105mm F2.8 EX DG allows greater
working distance between the lens and subject. High contrast and excellent image
quality are made possible in all shooting ranges. This macro lens is ideal for
digital SLR cameras as well as film SLR cameras.
- Reduces flare and ghosting
This new medium telephoto macro lens employs a new design concept for digital
SLR cameras. Its new lens power layout produces an excellent optical performance
and also reduces flare and ghosting. This new lens is designed to reduce the
influence of harmful light caused by reflections from the digital image sensor.
- An easy to use 105mm medium telephoto
lens
MACRO 105mm F2.8 EX DG lens is very suitable for taking pictures of nature
and it enables to use of natural light conditions or flash.
The greater working distance of this lens is very advantageous when taking
the picture of an insect or a flower among branches.
- The narrow angle of view is a
great aid for simplifying backgrounds and shallow depth of field makes it
easier to handle the composition. This lens would have an equivalent field
of view of a 178mm telephoto macro lens on a digital SLR camera (when used
with the SD10).
- Minimum aperture of F45
Depth of field of medium telephoto macro lenses is generally very shallow;
however, Sigma, Canon and Konica Minolta mounts of this lens have a minimum
aperture of F45 (or F32 for Nikon and Pentax mounts) for incredible depth
of field.
- Screw-in lens hood
A screw-in hood is included, for convenient use of circular polarizing filters.
It is possible to attach an 77mm filter in front of the lens hood.
- Dual Focus (DF) system
This lens also incorporates a Dual Focus (DF) system that is designed to make
the lens easy to hold during auto focusing. The large focus ring offers smooth
and positive action whilst focusing manually
- Lens Construction 11 Elements
in 10 Groups
- Angle of View 23.3 degrees
- Number of Diaphragm Blades 8 Blades
- Minimum Aperture F45
- Minimum Focusing Distance 31.3cm
- Maximum Magnification 1:1
- Filter Size 58mm
- Dimensions Diameter 74mm X Length
97.5mm
- Weight 460g
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