The Sigma 12-24mm F4 DG HSM Features, Performance And Specification Review

The Sigma 12-24mm F4 DG HSM Art was first declared Sept Sixteenth, 2016. This is Sigma’s largest contact providing to time frame and connects Sigma’s increasing record of Art contacts. The lens is costing just under $1600, that make it a intense opponent to The canon eos EF 11-24mm F4L USM lens which is costing just under $3,000.

Sigma 12-24mm F4 DG HSM
Sigma 12-24mm F4 DG HSM

The Sigma is available in Canon, Nikon F (FX) and Sigma SA Bayonet installs and will most likely entice scenery and structure photography lovers that are looking for a very extensive field-of-view (12mm gives around a 122° angled area of view).

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Sigma 12-24mm F4 DG HSM Key Features

  • 12-24mm central length
  • F4 highest possible aperture
  • Ring-type Ultrasound Focusing
  • Available in Cannon EF, Nikon F (FX) and Sigma mounts

Sigma 12-24mm F4 DG HSM Images Quality

Sharpness

The Sigma 12-24mm works very well start up at 12mm and even better once the lens is ceased down to F8. Sharpness is generally best from 12mm-16mm when the lens is ceased down to F5.6. As you focus from 16mm to 24mm overall sharpness start up reduces an excellent deal. In this variety we see the best efficiency when the lens is ceased down to F8. Area sharpness is excellent on the extensive end, but falls off as you zoom capability.

Chromatic Aberration

The Sigma does a really excellent job of managing chromatic aberration throughout the central variety, even when taken start up. As you quit the lens down or focus you even see a small enhancement in the managing of CA.

Vignetting

With regard to vignetting the Sigma does an outstanding job throughout the central variety, even when taken start up. When the lens is ceased down to F8 the vignetting completely vanishes across the entire central variety.

Distortion

The Sigma is affected with minor gun barrel distortions at 12mm, but that is to be predicted at that extensive of a central duration. By 16mm it all but vanishes. The distortions at 12mm seems to be pretty complicated, likely making it difficult to fix, but it’s so simple you’re unlikely to be worried by it.

Transmission (T-Stop)

The lens’ F-number is a theoretical value, and the actual mild transmitting value, known as the T-stop, is always fractionally lower due to mild failures within the lens. The calculated T-stop for this lens is around T4.6-4.8, which means the lens is allowing through a bit less mild than the F4 ranking indicates.

Sigma 12-24mm F4 DG HSM Performance

The Sigma 12-24mm F4 provides some very nice visual efficiency at the short end of its main range and excellent AF efficiency as well. The lens features an ‘HSM’ Ultrasound concentrating motor that provides extremely silent and precise concentrating with rates of speed that carefully coordinate the Canon 11-24mm F4L lens.

Sigma 12-24mm F4 DG HSM Sigma 12-24mm F4 Sunstar
Sigma 12-24mm F4 DG HSM Sigma 12-24mm F4 Sunstar

Unfortunately, the main sharpness in the Sigma experiences a lot at and beyond 20mm. You can work around this by concentrating in film stay perspective method, or personally concentrating in amplified stay perspective while pushing the DOF Review key, but even results won’t be perfect: while center sharpness recognizes an impressive enhancement, area sharpness then experiences.

Sigma 12-24mm F4 DG HSM 12mm, 1-60, F11, ISO 100
Sigma 12-24mm F4 DG HSM 12mm, 1-60, F11, ISO 100

It is important to note that at 12mm the Sigma works extremely well in conditions of sharpness, nearly related the efficiency of the Canon lens across much of the structure, at the same time never related its main sharpness. Beyond 18mm the efficiency begins to really fall off due to the effects described in the written written text above, demanding you to focus and capture at F8. Throughout the main range the Sigma does a much better job with regards to the managing of distortions, horizontal chromatic aberration and vignetting when as opposed to Canon lens. In comparison to the first, varying aperture form of the 12-24mm Sigma lens, variation is an enhancement for Sigma, although not as great of one as we had expected.

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Specifications

Lens Construction 16 Elements in 11 Groups
Angle of View 122.0°-84.1°
Number of Diaphragm Blades 9 (Rounded Diaphragm)
Mininum Aperture F22
Minimum Focusing Distance 24cm* / 9.4in. *At 24mm end of the zoom range
Filter Size (mm) n/a
Maximum Magnifications 1:4.9
Dimensions
(Diameter x Length)
4.0in. × 5.2in.
Weight 40.6oz
Corresponding Mounts
Sigma DG
HSM
Nikon DG
HSM
Canon DG
HSM