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28mm F1.4 DG HSM

As low as $799

SKU: #

441

Classic angle of view with the latest lens design
High resolution over the entire sensor area
Distortion is minimized to the fullest
Dust and splash resistant structure
Water and oil-repellent coating
Minimum focus distance of only 28cm / 11 in.
Hyper Sonic Motor (HSM) for silent, fast autofocus
Exclusive low-dispersion glass
Rounded 9-blade diaphragm

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Lens Construction

17 elements in 12 groups

Accessory Camera Wall

Edition Number

A019

Sensor Size

Full Frame

Angle Of View

75.4°

Number of Diaphagm blades

9 (rounded diaphragm)

Minimum Aperture

F16

Minimum Focusing Distance

28cm / 11 in.

Maximum Magnification Ratio

1:5.4

Filter Size

77mm

Dimensions

82.8mm x 107.7mm / 3.3 in. x 4.2 in.

Weight

865g / 30.5 oz.

Best-in-class performance

This lens incorporates two FLD ("F" Low Dispersion) glass elements and three SLD (Special Low Dispersion) glass elements. In addition, it effectively arranges three aspherical lenses, including a large-diameter aspherical lens to provide thorough correction of magnification chromatic aberration — encountered particularly in wide-angle lenses. This offers high resolution over the entire sensor, while sagittal coma flare is thoroughly corrected and distortion is also minimized to the fullest. Excellent performance is delivered in street photography, as well as shooting landscapes and night skies.

Designed to meet all shooting conditions

The water- and oil-repellent coating on the front lens element, together with the dust and splash resistant structure, ensures excellent performance even in the most challenging shooting conditions. The high-speed AF, thanks to the HSM (Hyper Sonic Motor) with an updated algorithm, captures instantaneous photography movement.

Water- and oil-repellent coating

The front lens element incorporates a water and oil-repellent coating that allows water to be wiped away easily and prevents oil and fat from sticking to the surface, even in challenging shooting conditions. At the same time, the maintenance of the lens surface becomes easier.

Dust and Splash Resistant Structure*

This lens features a highly effective dust and splash resistant structure* with special sealing at the mount connection, manual focus ring, and cover connection, allowing photographers to work in all types of weather.

* Although this construction allows the lens to be used in light rain, it is not the same as being waterproof.

High-speed AF

The high-speed AF, thanks to the HSM (Hyper Sonic Motor) with an updated algorithm, captures instantaneous photography movement.

Hood with lock

Features a hood with lock to prevent dropping the hood.

Designed to minimize flare and ghosting

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.

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.

Rounded diaphragm

The 9-blade rounded diaphragm creates an attractive blur in the out-of-focus areas of the image.

LENS CONSTRUCTION

FLD glass
SLD glass
Aspherical lens

MTF CHART

The MTF (Modulation Transfer Function) is one of the measurements for evaluating a lens' performance, and it shows how faithfully the contrast of the subject can be reproduced on the image plane. The horizontal axis shows the image height (distance from the center of the image in mm) and the vertical axis shows the contrast value (maximum value is 1).

The closer the 10 line pairs/mm curve is to 1, the higher the contrast and clarity of the lens is, and similarly, the closer the 30 line pairs/mm curve is to 1, the better the resolution and sharpness of the lens is.

*The MTF chart depicts the result at the wide-open aperture.
*For mirrorless lenses that support distortion correction, the horizontal axis shows the image height equivalent to when an L-Mount lens is attached to a Sigma L-Mount camera with distortion correction applied. (The effect of distortion correction may differ depending on the mount and camera used.)
*The spatial frequency indicates the variation on the image plane before distortion correction is performed.

Spatial Frequency

S: Sagittal Line

M: Meridional Line

10lp/mm

30lp/mm

DIFFRACTION MTF

GEOMETRICAL MTF

Hyper Sonic Motor (HSM)

The Hyper Sonic Motor (HSM) uses ultrasonic waves to drive the autofocus mechanism. It features extremely quiet operation, high torque, and excellent focusing speed.

Exclusive low-dispersion glass

Careful arrangement of exclusive low-dispersion glass elements gives SIGMA lenses superlative image rendition untarnished by residual chromatic aberration.

Water and oil repellent coating

Incorporates a water and oil-repellent coating that allows water to be wiped away easily and prevents oil and grease from sticking to the surface, even in challenging shooting conditions. At the same time, the maintenance of the lens surface becomes easier.

Dust and Splash Resistant Structure

This lens features a highly effective dust and splash resistant structure with special sealing at the mount connection, manual focus ring, zoom ring, and cover connection.

*Although this construction allows the lens to be used in light rain, it is not the same as being waterproof, so please prevent large amounts of water from splashing on the lens. It is often impractical to repair the internal mechanism, lens elements and electric components if they are damaged by water.

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