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Sigma 30mm f/2.8 EX DN

Sigma 30mm f/2.8 EX DN
Sigma 30mm f/2.8 EX DN
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Initial Price: 
$280
  • Linear AF motor
  • Two glass mold aspherical lenses
  • One double-sided aspherical lens
  • Inner focusing system
  • Super Multi-Layer Coating
  • Telecentric optical design
  • 7 blades (Circular aperture)
  • Metal mount

 

Sigma 30mm f/2.8 EX DN

Overview

Description by Sigma:

  • Sigma DN ( Digital Neo) lens: High performance lenses, designed exclusively for mirrorless interchangeable lens cameras.
  • Ultra compact construction weighing only 4.8 oz and measuring 1.5 inches in length
  • Newly developed linear AF motor ensures accurate and quiet autofocuing, making the lens ideal for video recording as well as still photos.

This high-performance standard lens is designed exclusively for mirrorless interchangeable lens cameras and has the equivalent angle of view as a 60mm lens (35mm equivalent focal length) on the Micro Four Thirds systems and 45mm (35mm equivalent focal length) on the E-mount system.
Two glass mold aspherical lenses, including a double-sided aspherical lens, provide excellent correction for all types of aberration. The inner focusing system corrects the fluctuation of aberration to maintain image quality regardless of the focal distance. Sigma’s Super Multi-Layer Coating reduces flare and ghosting as well as provides sharp and high contrast images even at the maximum aperture. The superior telecentric optical design improves the image quality throughout the frame. The optical design also allows the lens to be compact and lightweight. This lens benefits from a newly developed linear AF motor which moves the lens elements directly without the need for gears or the drive of other mechanical parts. This system ensures accurate and quiet autofocusing, making the lens suitable for video recording as well as still photos. The lens features a rounded 7 blade diaphragm creating an attractive blur to the out of focus areas of the image. This Sigma 30mm F2.8 EX DN has a minimum focusing distance of 30cm/11.8in and a maximum magnification ratio of 1:8.1.

Reviews

I learned something today: Photozone.de now sells lenses...in Australia? Anyway, the Sigma lens seems to be an excellent performer, to the point of outresolving the NEX-7. I wonder how much better the new 'Art" series 30mm DN lens will be:

"The Sigma AF 30mm f/2.8 EX DN is capable of delivering an outstanding center performance straight from f/2.8 - it even broke the existing record for the Sony NEX 7 as of the time of this review. The lens is basically "diffraction-limited" in the image center so stopping down has no effect on the center performance anymore. The outer image regions reach a good level at f/2.8 and improve to very good (just) figures at f/4 to f/8. The overall performance diminishes from f/11 onward - this is a typical diffraction effect and no problem of the lens.

Post date: 05/02/2013 - 20:36

Specifications

Initial Price: 
$280
Release Date: 
01/2012
DXO Mark Score
Distortion: 
0.00%
Vignetting: 
0.0 EV
Specifications
Lens type: 
Fixed Focal Length
Lens Mount: 
Micro Four Thirds Mount
Sony E mount
AF Motor type: 
Linear AF motor
Optical characteristics
Focal Length: 
30mm
Max Magnification: 
0.12x
Lens construction: 
7 Elements in 5 Groups
Diaphragm Blades: 
7 aperture blades circular opening
Maximum Aperture: 
f/2.8
Minimum Aperture: 
f/22
Minimum Focusing Distance: 
30.00cm
Stabilization system : 
No
Physical characteristics
Diameter: 
60.0mm
Length: 
38.0mm
Weight: 
135g / 4.8oz.
Body material: 
Plastic with metal mount
Weather sealing: 
No
Filter Diameter: 
46mm

Compatible Cameras

A notice Our vast database is currently being re-constructed. Estimated finishing date is sometime in June/July 2012. Bookmark us and check back again for the grand opening of the ultimate Lens database. The Estiasis.com team

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