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Panasonic G X1025 10-25mm F1.7 ASPH Leica Vario-Summilux Lens (Micro Four-Thirds)

MFR# HX1025
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$1,799.99
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  • Leica DG vario-summilux: Leica camera ag's strict quality standards optimized for photo/video has been developed into this ruggedized Mirrorless micro Four Thirds mount lens.
  • F1. 7 full range: F. 17 high-speed aperture brightness is available across the entire zoom range of 10-25mm
  • Stepless aperture: A stepless De-Clicked aperture ring and micro-step Drive aperture system provide smooth transitions when scene brightness changes rapidly.
  • Reduced brightness shifts - The optical design achieves exceptional barycentric stability to minimize image shifts during zooming.
  • Clutch focus: A focus Clutch Mechanism enables instant AF/MF switching and accurate manual focusing Plus an inner focus Drive system provides near silent operation.

The World's First* Standard Zoom Lens Achieving Full-range F1.7 LEICA DG VARIO-SUMMILUX 10-25mm / F1.7 ASPH. (H-X1025)

The Leica DG VARIO-SUMMILUX 10-25mm/ F1. 7 ASPH. H-x1025 lens is built for mirrorless Micro Four Thirds mount cameras and enables F1.7 aperture brightness throughout the entire 20-50mm (35mm camera equivalent) zoom range with exceptionally high optical performance clearing the stringent Leica standards. Suitable not only for photo shooting but also for video recording to satisfy both professional photographers and videographers.

The LEICA DG VARIO-SUMMILUX 10-25mm / F1.7 ASPH. (H-X1025) boasts a large F1.7 aperture throughout the entire 20-50mm (35mm camera equivalent) zoom range and exceptionally high optical performance, clearing the stringent LEICA standards. The full-range F1.7 ASPH. high-speed aperture provides beautiful bokeh and high descriptiveness. Covering a focusing distance from wide angle to standard zoom range, the LEICA DG VARIO-SUMMILUX 10-25mm / F1.7 ASPH. functions as a multiple fixed focal-length lens, providing the same or higher level of descriptiveness than a fixed focal-length lens can offer. It is suitable for a variety of daily shooting situations, from dynamic landscapes to portraits--even in low-lit scenes-- eliminating the need to change lenses between variations in environment.

Comprising 17 elements in 12 groups, the lens system features three aspherical lenses and four ED (Extra-low Dispersion) lenses that effectively suppress the axial chromatic aberration and chromatic aberration of magnification. Spherical aberration and distortion are also corrected by the aspherical lenses for stunningly high resolution. The use of aspherical lenses coupled with the optimum design of the lens system, results in a compact size and light weight, while maintaining its outstanding optical performance.

Compatibility with a maximum 240-fps high-speed sensor drive realizes high-speed and high-precision auto focusing. Notably, the new lens excels in video recording performance. In addition to the silent operation achieved by the inner focus drive system, the stepless aperture ring and micro-step drive system in the aperture control section help the camera smoothly catch up to brightness changes when zooming or panning. The optical design achieves exceptional barycentric stability to minimize image shifts during zooming. Adoption of a focus clutch mechanism enables instant AF/MF switching and accurate manual focusing. The LEICA DG VARIO-SUMMILUX 10-25mm / F1.7 ASPH. also excels in video recording performance with a mechanism that suppresses focus breathing, which was previously a fatal problem of all interchangeable lenses designed for still image photography.

The rugged dust/splash-resistant* design withstands use under harsh conditions even at -10 degrees Centigrade for high mobility. Nine blades give the aperture a rounded shape that produces an attractively smooth defocus effect in out-of-focus areas when shooting at larger aperture settings. Filter diameter is in 77mm. A highly reliable metal mount endures long time use.

*As a digital interchangeable lens for a mirrorless camera, as of May 31, 2019

Lens type Zoom lens
Max Format size FourThirds
Focal length 10–25 mm
Image stabilization No
Lens mount Micro Four Thirds
Aperture
Maximum aperture F1.7
Minimum aperture F16
Aperture ring Yes
Number of diaphragm blades 9
Optics
Elements 17
Groups 12
Special elements / coatings 1 UHR, 3 aspherical, 4 ED elements
Focus
Minimum focus 0.28 m (11.02)
Maximum magnification 0.14×
Autofocus Yes
Motor type Stepper motor
Full time manual Yes
Focus method Internal
Distance scale Yes
DoF scale No
Physical
Weight 690 g (1.52 lb)
Diameter 88 mm (3.46)
Length 128 mm (5.04)
Materials Magnesium alloy
Sealing Yes
Colour Black
Zoom method Rotary (extending)
Power zoom No
Zoom lock No
Filter thread 77 mm
Hood supplied Yes
Tripod collar No
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