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Sigma Telephoto 105mm f/2.8 EX DG Macro Autofocus Lens for Nikon AF

Item # SG105F28NA (Part # 257306)
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Reduces flare and ghost
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 ghost. 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 in 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 a flower among the branches or an insect. You do not shake your subject when you want to take its precise details without blurring by using a tripod. 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 F35 (Nikon and Pentax mounts only)
Depth of field of medium telephoto macro lenses is generally very shallow; however, this lens has a minimum aperture of F35 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 a 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.


  • Compact and lightweight medium telephoto macro lens.
  • Optimized image quality for Digital SLR cameras. Super Multi Layer (SML) coating reduces the ghost caused by reflections from thesurface of digital image sensors
  • Maximum magnification of 1:1
  • Focus Limiter Switch that limits the AF range so improving the speed and accuracy of auto focus
  • Dual Focus (DF) system that is designed to make the lens easy to hold during auto focusing

Lens Technology Explained:

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.

Lens Construction: 11 Elements in 10 Groups
Angle of View: 23.3 degrees
Number of Diaphragm Blades: 8 Blades
Minimum Aperture: F35
Minimum Focusing Distance: 31.3cm/12.3 in.
Maximum Magnification: 1:1
Filter Size Diameter: 58mm
Dimensions Diameter: 74mm X Length 97.5mm / 2.9 in. X 3.8 in.
Weight: 457g/16.1 oz.
Mounts to: Nikon SLRs

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