SIGMA AF 28-45MM F/1.8 DG DN (A) - SONY E

The world's first full-frame, F1.8 maximum aperture zoom lens SIGMA has successfully developed the world's first full-frame zoom lens with a maximum aperture of F1.8.

The SIGMA 28-45mm F1.8 DG DN | Art incorporates an inner zoom mechanism, a minimum focusing distance of 30cm across the entire zoom range, and a filter size of φ82mm. Despite its advanced feature-set, the lens weighs less than 1kg, making it a portable and versatile option for either hand-held shooting or a gimbal setup. 

As of June 2024 by SIGMA Constant maximum aperture of F1.8 Once a privilege reserved only for prime lenses, the maximum F1.8 aperture allows full-frame camera users to expose hand-held in low light and produce beautiful bokeh, while enjoying the flexibility of a zoom.

This unique optical achievement has been created through SIGMA's accumulated optical design experience and advanced production technology at the company’s sole production base in Aizu, Japan. Practical and stable inner zoom Employing an inner zoom mechanism, the overall length of the lens remains constant when the focal length or focus distance changes.

This means the lens is easy to use when shooting hand-held, highly stable when mounted on a tripod or gimbal, and more resistant to dust and water contamination.

 Consistent close focus The minimum focusing distance is a constant 30cm across the entire zoom range, with a maximum magnification ratio of 1:4 at the telephoto end, providing excellent close-up shooting capabilities.

 As well as offering precise focus in confined spaces, the lens can therefore be used close to a subject without affecting sharpness when using the zoom.

Premium build at a lighter weight By rights, such a fast zoom should be big and heavy, but while the lens’s rigidity and durability protect its sophisticated optical design, this is achieved at a weight of less than 1kg.

What’s more, this reliable photographic tool uses a versatile filter size of φ82mm, meaning no compromise in portability or convenience.

Excellent optical performance comparable to that of a prime lens With each optical aberration meticulously corrected throughout the zoom range, the SIGMA 28-45mm F1.8 DG DN | Art rivals prime lenses for clarity and definition.

Thanks to its advanced coatings, the lens produces clear images, even in backlit environments, while focus breathing is thoroughly suppressed, bringing expressive power to film-makers and photographers.

The pinnacle of optical quality in a zoom Through the effective arrangement of 5 SLD elements and 3 aspherical elements, aberrations are rigorously corrected.

 Axial chromatic aberration, which is particularly noticeable with large-aperture lenses, has been thoroughly suppressed, and the lens delivers clear images with minimal coloration, from sharply focused details to large, smooth bokeh.

Suppression of focus breathing When using regular lenses, the angle-of-view can change as focus moves from near to far, affecting precise composition.

With the SIGMA 28-45mm F1.8 DG DN | Art this focus breathing is suppressed, enabling natural focus pulls when shooting video. 

• Full Frame | f/1.8 to f/16
• Superfast Wide-to-Normal Zoom
• HLA Autofocus
• 11.9" Minimum Focus Distance
• Aperture Ring with Click & Lock Switches
• SLD and Aspherical Elements
• Nano Porous & Super Multilayer Coatings
• Dust & Splash Resistant