Sigma introduces the Leica L-mount 28-45mm f/1.8 DG DN Art Lens, the world's first zoom lens for full-frame mirrorless cameras with an f/1.8 aperture throughout the entire zoom range. Featuring prime-like optical performance and video-friendly design and functionality, its wide-to-normal focal range means a lighter kit bag without surrendering image quality.

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

Sigma introduces the Leica L-mount 28-45mm f/1.8 DG DN Art Lens, the world's first zoom lens for full-frame mirrorless cameras with an f/1.8 aperture throughout the entire zoom range. Featuring prime-like optical performance and video-friendly design and functionality, its wide-to-normal focal range means a lighter kit bag without surrendering image quality.

The lens features a total of 18 elements in 15 groups, with three aspherical and five Special Low Dispersion elements to minimize flare and ghosting and suppress various aberrations. This results in an optical performance that meets or exceeds that of other Sigma Art lenses, including the primes. Along with its 11-blade, rounded diaphragm, the design promotes sharpness and a large, smooth bokeh when used wide open.

In addition to the f/1.8 maximum aperture, the lens also maintains an 11.9" minimum focusing distance across the entire zoom range. It achieves a maximum magnification ratio of 1:4 at its longest focal length, increasing depth of field and versatility in tight spaces.

Designed with video creation in mind, the lens' bright f/1.8 aperture and wide-to-normal zoom range make it a versatile tool ideal for single-shooter, run-and-gun setups. An internal zoom design maintains the overall length during use, making it easy to balance on gimbals. The design also suppresses focus breathing for smooth movement across the focal range. Sigma's high-speed, high-response linear actuator autofocus remains both quiet and accurate, while manual focusing is improved with click and lock mechanisms.

The L-mount lens also supports switching between linear and non-linear focus ring settings. With a rotation angle of 90 to 720° and a constant minimum focusing distance, operators will benefit from intuitive manual focusing at any focal length.

• Two AFL buttons
• Focus mode switch
• Super multilayer and nano porous coatings
• Water- and oil-repellent coating on front element
• Dust- and splash-resistant design
• Durable brass bayonet mount

  Related Questions and Answers

  Q: 1. Is this lens parfocal?

  A: The Sigma 28-45mm f/1.8 DG DN Art Lens (Leica L) is not a parfocal lens.

  Q: 2. Is this lens constant volume when zooming and/or focusing , or does the front extend?

  A: The Sigma 28-45mm f/1.8 DG DN Art Lens (Sony E) has an internal zoom, it maintains the overall length while zooming and focusing.

  Q: 3. Are there dust issues like with the 24-70 DGDN?

  A: As of the date/time of this reply, I have not heard of any major issues or complaints concerning dust with the Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E. However, if you have issues with the above lens, you may contact Sigma Photo directly by calling them at 1.800.896.6858 or by e-mailing them at info@sigmaphoto.com.

  Q: 4. Can this lens be configured to adapt to a Nikon Z mount? What will it require?

  A: The Sigma 28-45mm f/1.8 DG DN Art Lens (Sony E) is very new and has not been tested with lens adapters. However, one of these may work: https://bhpho.to/3Xbf5D5.

  Q: 5. Is this compatible for a canon r5?

  A: The Sigma 28-45mm f/1.8 DG DN Art Lens (Sony E) is not compatible with the Canon EOS R5 Mirrorless Camera (B&H # CAER5).

  Q: 6. Can this fit on the DJI ronin s4 with a Sony fx3?

  A: We think that the DJI RS4 would work with the SONY FX3 and the 2lb Sigma 28-45mm f/1.8 DG DN Art Lens. However, the DJI RS4 Pro would handle longer lenses with it's powerful motors and 10lb weight limit. The DJI RS4 has a 6lb weight limit. However, both offer the following feature for longer lenses that strengthens the gimbals motors to handle longer lenses.

  Q: 7. Will this lens balance on the DJI Ronin 4D 8K (BH #DJRONIN4D8K)?

  A: The Sigma 28-45mm f/1.8 DG DN Art Lens (Sony E) is likely too heavy for the DJI Ronin 4D.

  Q: 8. What is the minimum apreture?

  A: The smallest aperture on the Sigma 28-45mm f/1.8 DG DN Art Lens (Leica L) is f/1.8. And it can close down to f/16

  Q: 9. How does it compare to the SONY FE 35mm f/1.4 GM from an image quality standpoint?

  A: The Sony FE 35mm f/1.4 GM Lens is slightly sharper than the Sigma 35mm f/1.4 DG DN Art Lens for Sony E.

  Q: 10. Is it likely for an 82mm Variable ND to vignette on this lens?

  A: As long as you do not have an overly thick 82mm Variable ND, it should not vignette on the Sigma 20mm f/1.4 DG DN Art Lens for Sony E.