Sigma 28-45mm F1.8 DG DN Art Lens
SIGMA has once again pushed the boundaries of innovation with the introduction of the groundbreaking SIGMA 28-45mm F1.8 DG DN | Art lens. This remarkable optic is a true game-changer, as it marks the first time a full-frame mirrorless zoom lens has been equipped with a constant maximum aperture of F1.8 - a feat that has eluded the industry until now.
The SIGMA 28-45mm F1.8 DG DN | Art lens is a testament to SIGMA's relentless pursuit of optical excellence. By incorporating a constant F1.8 aperture throughout the entire zoom range, this lens shatters the limitations of traditional zoom lenses, which typically sacrifice brightness as the focal length is increased.
The SIGMA 28-45mm F1.8 DG DN | Art is equipped with a high-performance HLA (High-response Linear Actuator) autofocus system, ensuring fast, precise, and reliable focusing performance. This, coupled with the lens's intuitive controls, such as the aperture ring with a de-click function and two customizable AFL buttons, allows users to seamlessly adapt to a wide range of shooting scenarios and creative workflows.
In addition to its impressive stills capabilities, the SIGMA 28-45mm F1.8 DG DN | Art is also a highly capable video lens. Its focus breathing compensation design helps to minimize unwanted focus shifts during recording, ensuring smooth and consistent footage.
The SIGMA 28-45mm F1.8 DG DN | Art features a sophisticated optical construction, consisting of 18 elements in 15 groups, including 5 SLD (Special Low Dispersion) elements and 3 aspherical elements. This advanced lens design not only contributes to the lens's exceptional image quality but also helps to minimize common optical aberrations, such as distortion and chromatic aberration, ensuring consistently sharp and high-contrast results.
Lens Features:
- F1.8 aperture across whole zoom range
- >Close focus 30cm across zoom range
- Minimal focus breathing
- High-speed (HLA) motor
- Light and small, only 960g
- Dust and Splash Resistant Structure
- 2 AFL-buttons
- Aperture ring click switch
- Lock switch
- Focus mode switch
Related Underwater Gear Categories:
- F1.8 aperture across whole zoom range
- Close focus 30cm across zoom range
- Minimal focus breathing
- High-speed (HLA) motor
- Dust and Splash Resistant Structure
- 2 AFL-buttons
- Aperture ring click switch
- Lock switch
- Focus mode switch
- Lens Construction: 18 elements in 15 groups (5 SLD, 3 aspherical elements)
- Angle of View: 75.4-51.3°
- Number of Diaphragm Blades: 11 (rounded diaphragm)
- Filter Size: φ82mm
- Domensions: L-Mount:φ87.8mm x 151.4mm / φ3.5in. x 6.0in.; Sony E-mount:φ87.8mm x 153.4mm / φ3.5in. x 6.0in.
- Weight: L-Mount:960g / 33.9oz; Sony E-mount:950g / 33.5oz.