Panasonic Leica DG Vario-Summilux 25-50mm f/1.7 Asph.

Panasonic Leica DG Vario-Summilux 25-50mm f/1.7 Asph. – Full-range F1.7 telephoto zoom for stills and video

Choose a LEICA DG lens to get optical performance that follows Leica Camera AG’s strict quality standards. This Panasonic Leica DG Vario-Summilux 25-50mm f/1.7 Asph. delivers consistent F1.7 brightness across the entire zoom range. Consequently, it suits both low-light stills and smooth, cinematic video recording.

Consistent brightness and versatile use

The lens maintains a constant f/1.7 aperture throughout the zoom range, which corresponds to 50–100mm in 35mm camera equivalent terms. As a result, you can shoot indoors in low light, capture portraits with distinctive background bokeh, and record video with stable exposure. In short, you get a single lens that covers many common shooting scenarios.

Video-friendly controls and handling

The lens features seamless iris control to produce exceptionally smooth exposure changes while zooming or panning. Moreover, it offers fast and accurate autofocus plus smooth aperture changes—features that matter to modern content creators who record 4K video and stills without disturbing subjects. When paired with a compatible camera, you can also adjust the rotation angle of the focus ring manually for precise control.

Close-up performance to expand creative options

This lens gives superb close-up capability. At the telephoto end it reaches a closest focusing distance of 0.31 m and a maximum magnification of 0.42x (35mm camera equivalent). At the wide end the closest focusing distance is 0.28 m. These figures enable tighter framing and more dramatic subject separation when you need it.

Optical design and image quality

The lens uses an optimized optical configuration to reduce aberrations and deliver high resolution. It comprises 16 elements in 11 groups, including 1 aspherical (ASPH) element, 3 extra-low dispersion (ED) elements, and 1 ultra-high refractive (UHR) element. These components help preserve sharpness and clarity throughout the zoom range and minimise distortion.

Durability and operating conditions

Panasonic Leica DG Vario-Summilux 25-50mm f/1.7 Asph. is built with dust- and splash-resistant construction and is rated to operate in temperatures down to -10°C. Please note that dust- and splash-resistance does not guarantee protection against all contact with dust or water.

Key specifications

• Based on Leica Camera AG's strict quality standards
• Full-range F1.7 telephoto zoom lens for photography and videography
• Excellent close-up performance with a closest focusing distance of 0.28 m (wide) / 0.31 m (tele) and maximum magnification of 0.42x (35mm camera equivalent) at the telephoto end

*Among digital interchangeable lenses for mirrorless cameras as of July 8, 2021.

**Dust and Splash Resistant does not guarantee that damage will not occur if this lens is subjected to direct contact with dust and water.

Leica is a registered trademark of Leica Microsystems IR GmbH.

FAQ

Question: Is this lens suitable for both still photography and video?

Answer: Yes. The constant F1.7 aperture, seamless iris control and smooth aperture changes make it well suited to low-light stills and to recording video with stable exposure and smooth transitions.

Question: How close can I focus with this lens and what magnification can I achieve?

Answer: You can focus to 0.28 m at the wide end and 0.31 m at the telephoto end. At the telephoto end the lens reaches a maximum magnification of 0.42x (35mm camera equivalent), which helps when you want tighter framing or more pronounced background separation.

Question: Is the lens durable enough for outdoor use?

Answer: The lens features dust- and splash-resistant construction and is rated for use in temperatures down to -10°C. However, this does not guarantee protection against all dust or water exposure, so take normal precautions in harsh environments.

Question: What optical features help ensure sharp images across the zoom range?

Answer: The optimized design includes 16 elements in 11 groups, with 1 ASPH, 3 ED and 1 UHR elements. These components minimise aberrations and support high sharpness and resolution across the zoom range.

Question: Are there any special considerations for focus control when shooting video?

Answer: When used with a compatible camera, you can adjust the rotation angle of the focus ring manually for more precise and comfortable focus pulls. Combined with fast, accurate autofocus and smooth aperture control, the lens offers practical tools for video production.