Sigma-bits

Sigma keeps redefining it’s lens line up. On july 10th they introduced a 70mm Macro. The 70mm gives a similar field of view as a 105mm when used with an APS-C size sensor.

From the press release:

The Sigma Corporation is pleased to announce the launch of the new MACRO 70mm F2.8 EX DG lens. This medium telephoto macro lens is ideal for both digital SLR cameras and 35mm film SLR cameras. The 70mm focal length gives an equivalent field of view as our popular 105mm macro lens when used on digital SLR cameras with an APS-C size image sensor. The design of this lens makes it suitable for taking pictures in all situations from infinity to 1:1 macro, both with natural light conditions or flash. A Special Low Dispersion (SLD) lens and two high refractive index SLD lenses provide excellent correction for all types of aberrations and produce an exceptional level of optical performance. Sigma’s super multi-layer lens coating reduces flare and ghosting, and helps create a natural color balance. The floating focus system provides extremely high optical performance from infinity to 1:1 Macro. A ‘Focus Limiter Switch’ in incorporated on the lens, improving the speed and accuracy of autofocus by limiting the focus range. A screw-in lens hood is included for convenient use of circular polarizing filters.

FEATURES

• Special Low Dispersion (SLD) lens and two high refractive index SLD lenses provide excellent correction for all types of aberrations
• Super multi-layer lens coating reduces flare and ghosting
• Floating focus system provides extremely high optical performance from infinity to 1:1 Macro
• Equivalent field of view to 105mm macro lens when used on a digital SLR camera with an APS-C size image sensor

THE SPECIFICATIONS

• Focal Length: 70mm
• Minimum Aperture: F22
• Lens Construction: 10 Elements in 9 Groups
• Angle of View: 34.3°
• Number of Diaphragm Blades: 9 pcs
• Minimum Focusing Distance: 25.7cm (10.1”)
• Maximum Magnification: 1:1
• Filter Size: 62mm
• Lens Hood: Screw-in Type
• Dimensions: Diameter 76mm (3.0in”) x Length 95mm (3.7”)
• Weight: 525g/18.5oz

* The appearance and specifications are subject to change without notice.
* Nikon and Pentax mount do not have an aperture ring, therefore depending on Camera model some functions may not work.