Art
30mm F1.4 DC HSM

• Camera Type

  DSLR

• Corresponding Mount

  SIGMA SA-mount, Canon EF mount, Nikon F mount, Sony A-mount, Pentax mount

• Sensor Format

  APS-C [DC]

• Lens Construction

  9 elements in 8 groups

• Angle of View

  50.7°

• Number of Diaphragm Blades

  9 (Rounded diaphragm)

• Minimum Aperture

  F16

• Minimum Focusing Distance

  30cm / 11.8in.

• Maximum Magnification Ratio

  1:6.8

• Filter Size

  φ62mm

• Dimensions (Diameter × Length)

  φ74.2mm × 63.3mm / φ2.9in. × 2.5in.

  *The length of a lens is measured from the filter surface to its mount.

• Weight

  435g / 15.3oz.

• Edition Number

  A013

  The three-digit code on the surface of the lens is to indicate the year the lens was first released.
  (Since it is different from the year of manufacture, the release year and edition number may not match depending on the mount.)

• Supplied Accessories

  ・Case
  ・LENS HOOD LH686-01
  ・FRONT CAP LCF-62mm III
  ・REAR CAP LCR II

• Mount / Product Barcode

  SIGMA SA-mount：00-85126-30156-9 (discontinued)

  Nikon F mount：00-85126-30155-2

  Canon EF mount：00-85126-30154-5

  Pentax mount：00-85126-30161-3 (discontinued)

  Sony A-mount：00-85126-30162-0 (discontinued)

• Camera Compatibility

  LINK

• A large-aperture F1.4 standard lens to please any photographer

  A large-aperture lens with minimal optic aberration and superb peripheral resolution.

  In 2005, Sigma introduced the Sigma 30mm F1.4 EX DC HSM large-aperture APS-C format standard lens. Having reorganized its lenses into three product lines, Sigma created the 30mm F1.4 DC HSM large-aperture APS-C format standard digital SLR camera lens for the Art line. Like other Art lenses, it offers exceptional optical performance throughout the image. Highly versatile, it lets the photographer use distance from the subject and aperture to achieve many different styles of photographic expression. For example, the photographer can leverage the shallow depth of field that creates beautiful bokeh for snap shots, portraits, and landscapes, and many different styles of photography.

• Lens construction

  Putting a large-aperture aspheric lens first in the series of lenses makes possible a slim barrel, while optimized power distribution helps correct various types of optical aberration. These features give this F1.4 large-aperture lens truly optimal image quality.

  

• High resolution and outstanding photographic expression

  Minimal aberration combined with beautiful bokeh effects at large-aperture settings.

  Thanks to their easy-to-use angle of view, standard lenses allow photographers to express themselves fully. The 30mm F1.4 DC HSM leverages superior optical performance to offer outstanding expressive power at a wide range of focusing distances. Optimized power distribution minimizes curvature of field, thereby preventing a loss of image quality at the edges of photographs. The use of a double aspheric lens minimizes spherical distortion, astigmatism and coma. Coma of point light sources is minimized near the edge of the image, and an attractive round bokeh effect is produced at large-aperture settings.

  

• Rounded diaphragm

  When photographing with point light sources such as electric lights or reflections on a body of water in the background, the rounded 9-blade diaphragm helps produce an attractive bokeh effect—even at large-aperture settings.

  

• The finest in materials, usability and functionality

  A refined, integrated design made with the photographer in mind.

  All lenses in Sigma’s new Art line come with a hood with a high-quality rubberized connector and feature a newly designed lens cap and AF/MF switch, and are designed for intuitive use and superior functionality. Inside, HSM (hypersonic motor) delivers high AF speed and extremely quiet performance. An enhanced algorithm offers even smoother automatic focusing. Full-time manual focus override is another key feature that leaves the artistic touches in the photographer’s hands. The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens. In both the external and internal parts, the optimized use of
  (*)TSC (Thermally Stable Composite), an excellent match for metal parts, further contributes to the high-precision construction of the lens.

  (*)TSC (Thermally Stable Composite)
  TSC (Thermally Stable Composite) is a type of polycarbonate with a thermal expansion rate similar to that of aluminum. It has high affinity to metal parts which contributes to high quality product manufacturing.

  

• HSM (hypersonic motor)

  HSM (hypersonic motor) delivers high AF speed and extremely quiet performance. An optimized algorithm offers even smoother automatic focusing, and full-time manual focus override is another key feature.

  

• Incorporating a Rear Focus system

  The lens incorporates a rear focus system that prevents focus-dependent variation in aberration, making high-level image quality possible throughout the entire image. With their unchanging barrel length, these lenses also enhance balance and stability for the photographer. Furthermore, since the front of the lens does not rotate, polarizing filters can be used with extra convenience.

  

• TSC (Thermally Stable Composite)

  A first for the industry, the barrel of the lens features a new TSC (Thermally Stable Composite) that offers minimal thermal shrinkage combined with exceptional hardness. It also offers 25% greater elasticity than polycarbonate. Since its thermal shrinkage is low, TSC matches well with metal parts, further contributing to the high-precision construction of the lens. TSC also makes possible slimmer forms for parts like zoom rings and scaling rings.

• Flare and ghosting reduction

  From an early stage in the lens design process, flare and ghosting have been measured to establish an optical design resistant to strong incident light sources such as backlighting. Sigma’s Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions. The included lens hood can be attached to block out extraneous light, which can have a negative effect on rendering performance.

  

• High-precision, rugged brass bayonet mount

  The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.

  

• Spatial frequency

  S:Sagittal Line

  M:Meridional Line

• 10lp/mm

• 30lp/mm

Diffraction MTF

• F1.4

• F2.8

• F5.6