|DC||The lens is designed for APS-C digital cameras.|
|HSM||The lens is equipped with ultrasonic motor to provide very fast and virtually silent autofocus. Learn more|
|| A||Art series lens designed with a focus on sophisticated optical performance and abundant expressive power. Delivers high-level artistic expression.|
|Position in the lineup|
|Sigma 30mm F/1.4 DC HSM | A||Jan 2013||⊗|
|Sigma 30mm F/1.4 EX DC HSM||Feb 2005||⊗|
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|Diagonal angle of view:||48.8° (Canon APS-C)
50.5° (Nikon APS-C)
50.5° (Pentax APS-C)
45° (Sigma APS-C)
50.5° (Sony APS-C)
|Lens construction:||9 elements in 8 groups, including 1 Bi-ASPH|
|Closest focusing distance:||30 cm|
|Number of diaphragm blades:||9|
|Type of autofocus motor:||Ultrasonic (Canon EF)
Ultrasonic (Minolta/Sony A)
Ultrasonic (Nikon F)
Ultrasonic (Pentax K)
Ultrasonic (Sigma SA)
|Full-Time Manual Focus:||Yes|
|Weight:||SA: 435 g|
|Maximum diameter x Length:||SA: Ø74.2 x 63.3 mm|
|Materials:||High-quality plastic barrel, metallic mount|
|Filter size:||62 mm|
Design and Features
For information on history of Sigma and development of Sigma Global Vision line please refer to the article dedicated to Sigma 35mm F/1.4 DG HSM | A.
A replacement for Sigma 30mm F/1.4 EX DC HSM (2005) with redesigned optical formula for better edge sharpness and improved autofocus algorythms.
The lens barrel is of moderate weight, made of high-quality plastic (TSC). The lens mount is metallic. Please refer to the article dedicated to Sigma 35mm F/1.4 DG HSM | A for more information about TSC. In terms of build quality and design Sigma Global Vision line is a new direction for the company: cosmetically the lens differs from the earlier models and looks attractive. The focusing ring is wide, rubberized and finely-ribbed in order to provide a good grip and to prevent slippage of the fingers.
The lens features AF/MF focus mode switch.
|AF||Autofocus mode with Full-Time Manual Focus.|
|MF||Manual focus mode.|
The lens uses front filters with standard size of 62 mm which are easy to find. They are also inexpensive.
The filter thread does not rotate during focusing which allows convenient use of different types of filters (including but not limited to polarizing and gradient).
The lens is equipped with ultrasonic motor, the autofocus is virtually silent and fast.
The lens is compatible with Sigma USB dock, an optional accessory which allows to connect the lens to a computer and customize its operation via Sigma Optimization Pro software. The customization for this lens includes updates of firmware via the Internet and autofocus microadjustments for 4 shooting distances.
Sigma also offers paid Mount Conversion Service (MCS) for this lens. With MCS, the mount of the lens can be converted to Canon EF, Minolta/Sony A, Nikon F, Pentax K or Sigma SA. Teleconverters, USB docks and other accessories for this lens are not eligeable for MCS.
Aspherical elements (ASPH, XA) minimize spherical aberration, astigmatism, coma and ensure excellent sharpness and contrast even at maximum aperture.
The sharpness is very good at the center of the frame wide open and excellent from F/2. The edges are mediocre at F/1.4, good at F/2-2.8 and very good from F/4. The background blur is a bit smoother compared to the predecessor but still slightly nervous.
|Camera||Canon EOS 50D|
|Sensor size||22.3×14.9 mm|
|Vignetting at F/1.4||-1.1 EV|
|User Manual. Multilingual, Adobe PDF, 2 MB|
|Prime lenses for Canon EOS DSLR cameras|
|Pentax lenses: compendium|
Alternatives (AF, 26..34 mm)
|Canon EF 28mm F/1.8 USM||1995||⊗|
|Canon EF 28mm F/2.8||1987||⊗|
|Canon EF 28mm F/2.8 IS USM||2012||⊗|
|Sigma 28mm F/1.8 EX DG Aspherical Macro||2000||⊗|
|Sigma 30mm F/1.4 EX DC HSM||2005||⊗|
|Sony 28mm F/2.8 (SAL28F28)||2006||⊗|