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LEICA DG VARIO-SUMMILUX 25-50mm / F1.7 ASPH. (H-X2550) Micro Four Thirds Lens

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H-X2550

LEICA DG VARIO-SUMMILUX 25-50mm / F1.7 ASPH.

World’s first* telephoto zoom lens achieving full-range F1.7, for stills and video.
* Among digital interchangeable lenses for mirrorless cameras as of July 8, 2021.
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Features

LEICA DG Lens – ultimate optics

Opt for a LEICA DG lens and get the ultimate in optical quality and performance. They naturally meet the strict quality standards set by Leica Camera AG. Thanks to the sophisticated design of these lenses, you will enjoy brilliant clarity all the way to the edges of your photos. At the same time, distortions of all kind are prevented to enable precise, sharp picture rendering. This means you have the ideal tool for pro-level images in the palm of your hand.
・ Leica is a registered trademark of Leica Microsystems IR GmbH.
LEICA DG Lens – ultimate optics

All round F1.7 quality

This lens is great for everything from snapshots indoors in low light to portraits with a distinctive bokeh effect in the background. Enjoy the quality of F1.7 throughout the 50-100mm zoom range (35mm camera equivalent) along with ease-of-use delivered by a compact, lightweight design. Seamless iris control allows users to shoot video with exceptionally smooth changes in exposure when zooming or panning. And when used with a compatible camera, the rotation angle of the focus ring can be adjusted manually.
All round F1.7 quality

Superb close-up performance

This lens features superb close-up performance, featuring a closest focusing distance of 0.31m (at the telephoto end)* and 0.42x maximum magnification (35mm camera equivalent at the telephoto end). It’s ideal for zooming in on cuisine and other small items as well as small and sensitive subjects such as butterflies. It’s a lens designed to expand the range of creativity.
* Closest focusing distance of 0.28m (at the wide end), 0.31m (at the telephoto end).
Superb close-up performance

Dust, splash and freeze-resistant design

LEICA DG VARIO-SUMMILUX 25-50mm / F1.7 ASPH. is designed to keep shooting in the toughest conditions thanks to its dust- and splash-resistant construction and allows you to shoot in temperatures as low as -10 °C.
・ Dust and Splash Resistant does not guarantee that damage will not occur if this lens is subjected to direct contact with dust and water.
Dust, splash and freeze-resistant design

Ideal for video recording

The lens offers fast, accurate autofocus and smooth aperture changes, critical for the modern content creator, allowing you to record beautiful 4K video and stills without disturbing your subject.
Ideal for video recording

H-X2550 lens construction

The optimized configuration has 16 elements in 11 groups, including 1 ASPH, 3 ED and 1 UHR lenses to minimize aberrations and ensure superb resolution.
H-X2550 lens construction

H-X2550 MTF chart

They meet the strict optical standards set by Leica Camera AG and offer outstanding sharpness and resolution throughout the zoom range. Demonstrates uncompromising expressiveness.
・ For lenses that are capable of compensating distortion, the horizontal axis shows the distance from the centre of the corrected image.
H-X2550 MTF chart

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Specs

Photo of LEICA DG VARIO-SUMMILUX 25-50mm / F1.7 ASPH. (H-X2550) Micro Four Thirds Lens

Size and Weight

Height
87.6mm
Width
87.6mm
Depth
127.6mm
Weight
654g

Approximately. Weight excluding lens cap, lens rear cap and lens hood. Length from the tip of the lens to the base side of the lens mount.

  • Micro Four Thirds System StandardMicro Four Thirds System Standard
  • LEICA DG LensLEICA DG Lens
  • Dust / Splash / Freeze ResistantDust / Splash / Freeze Resistant

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 0.28m (at the wide end) / 0.31m (at the telephoto end) and a maximum magnification of 0.42x (35mm camera equivalent) (at the telephoto end)

General

  • Lens Name

    • LEICA DG VARIO-SUMMILUX 25-50mm / F1.7 ASPH.
  • Lens Construction

    • 16 elements in 11 groups (1 aspherical lens, 3 ED lenses, 1 UHR lens)
  • Mount

    • Micro Four Thirds mount
  • Focal Length

    • f=25-50mm (35mm camera equivalent 50-100mm)
  • Aperture Type

    • 9 diaphragm blades / Circular aperture diaphragm
  • Maximum Aperture

    • F1.7
  • Minimum Aperture

    • F16
  • Closest Focusing Distance

    • 0.28m/0.92ft (at focal length 25mm) / 0.31m/1.02ft (at focal length 50mm)
  • Maximum Magnification

    • 0.21x / 0.42x (35mm camera equivalent) (at focal length 50mm)
  • Diagonal Angle of View

    • 47°(Wide) - 24°(Tele)
  • Dust and Splash Resistant

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

    • -10℃ to 40℃ (14℉ to 104℉)
  • Filter Size

    • φ77mm
  • Max. Diameter

    • φ87.6mm / 3.45inch
  • Overall Length

    • Approx. 127.6mm / 5.02inch (from the tip of the lens to the base side of the lens mount)
  • Weight

    • Approx. 654g / 1.44lb (excluding lens cap, lens rear cap and lens hood)
  • Standard Accessories

    • Lens cap, Lens rear cap, Lens hood, Lens storage bag

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