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"It looks like Sigma has another sure-fire winner on its hands." - Amateur Photographer Review 09/03/15
• Excellent correction of sagittal coma flare
• Excellent correction of chromatic aberration
• Minimised distortion
• High peripheral brightness.
• Designed to minimize flare and ghosting
•Hyper Sonic Motor ensures High AF Speed
•Brass made bayonet mount
Excellent correction of sagittal coma flare
The SIGMA 24mm F1.4 DG HSM | Art has an optimized power layout, positioning aspherical lens elements at the rear and adjusting the incidence angle of the light source, enabling high rendering performance even from the widest aperture. It is perfect for astronomical photography and shooting illuminations because of the reduced blur on the point light sources near the edge of the image.
Excellent correction of chromatic aberration
The SIGMA 24mm F1.4 DG HSM | Art incorporates FLD (“F” Low Dispersion)* glass and SLD (Special Low Dispersion) glass elements to minimize chromatic aberration of magnification which is mainly visible around the edge of the image. Moreover the power layout ensures the correction of axial chromatic aberration. Without any color blur, it achieves high image quality throughout the entire focusing range, thus achieving sharp and high contrast image rendering.
It is not possible to compensate for distortion that is often observed with wide-angle lenses just by changing the aperture value. Therefore, the lens development stage was vital in ensuring minimized distortion. The SIGMA 24mm F1.4 DG HSM | Art adjusted the incidence angle of the light source from the surface of the first lens and positioned each aspherical glass element to optimize the power layout at respective positions. This has helped it succeed in minimizing distortion throughout the entire image.
High peripheral brightness
By improving the efficiency at large apertures and minimizing vignetting, it secures very good brightness. Without considering the lack of light even at the open aperture, it ensures high contrast images for indoor photography, astronomical photography and when photographing blue sky.
Designed to minimize flare and ghosting
Flare and ghosting were thoroughly measured and monitored from the lens development stage to establish an optical design which is resistant to strong incidental light such as backlight. The Super Multi-Layer Coating reduces flare and ghosting and provides sharp and high contrast images even in backlit conditions.
The 9 blade-rounded diaphragm creates an attractive blur to the out-of-focus areas of the image.
Hyper Sonic Motor ensures High AF Speed
The HSM (Hyper Sonic Motor) ensures a silent, high-speed AF function. By optimizing the AF algorithm, smoother AF is achieved. It incorporates a new full-time manual focusing mechanism that switches to manual focusing, simply by rotating the focus ring, even when AF is being used. This allows the photographer to make focus adjustments quickly and easily.
Brass made bayonet mount
This lens incorporates a brass made bayonet mount which has both high accuracy and durability. A special treatment to reinforce its strength is applied to the surface giving it greater strength and making it highly resistant to long-term use.
Made in Japan” with the best craftsmanship
All SIGMA's manufacturing – right down to the molds and parts – is carried out under an integrated production system, entirely in Japan.
Lens Construction 15 elements in 11 groups Minimum aperture (W) F16 Filter size 77mm Angle of view (35mm equivalent) 84.1° Minimum focusing distance 25cm Dimensions (Diameter x Length) ø85.0mm x 90.2mm Number of diaphragm blades 9 (rounded diaphragm) Maximum magnification ratio 1 : 5.3 Weight 665g
|Box Contents:||Lens, Case, Petal-Type Hood|