Panasonic Leica DG Vario-Summilux 10-25mm f/1.7 ASPH Lens

Professional Grade Optics for Micro Four Thirds

The Panasonic Leica DG Vario-Summilux 10-25mm f/1.7 ASPH Lens (H-X1025GC) delivers exceptional optical performance for Micro Four Thirds mirrorless cameras. Offering a versatile 20-50mm full-frame equivalent focal range, this lens maintains a remarkably fast, constant f/1.7 aperture from edge to edge. Engineered to clear stringent LEICA standards, it provides stunning resolution and precise control for both professional photographers and videographers. Whether you are capturing expansive landscapes, intimate portraits, or cinematic video sequences, this lens offers the reliability and image quality demanded by working creatives.

Key Features

• Constant f/1.7 aperture across the entire zoom range (20-50mm equivalent).
• Micro Four Thirds mount compatibility.
• Focus clutch mechanism for instant AF/MF switching.
• Stepless "de-clicked" aperture ring for smooth video exposure adjustments.
• Silent inner focus drive system optimised for video recording.
• Exceptional barycentric stability to minimise image shifts during zooming.

Benefits

* Cinematic Video Production: The stepless aperture ring, micro-step drive system, and suppressed focus breathing make this lens a powerhouse for seamless, professional video capture.

* Low-Light Mastery: The bright f/1.7 constant aperture allows for exceptional low-light performance and beautiful depth-of-field control throughout the zoom range.

* Flawless Image Quality: Three aspherical lenses and four ED elements effectively suppress chromatic and spherical aberrations, ensuring edge-to-edge sharpness.

* Rapid Autofocus: Compatibility with high-speed 240-fps sensor drives ensures fast, precise autofocusing for tracking moving subjects.

Specifications

* Lens Mount: Micro Four Thirds

* Focal Length: 10-25mm (20-50mm 35mm equivalent)

* Maximum Aperture: f/1.7 (Constant)

* Optical Construction: 17 elements in 12 groups

* Special Elements: 3 Aspherical lenses, 4 ED (Extra-low Dispersion) lenses

* Autofocus Compatibility: Up to 240-fps high-speed sensor drive

* Aperture Control: Stepless "de-clicked" ring with micro-step drive

* Focusing System: Inner focus drive with focus clutch mechanism

FAQs

1. Is the aperture ring clicked or de-clicked?

The aperture ring on the Panasonic Leica 10-25mm f/1.7 is stepless and "de-clicked," allowing for smooth and silent exposure transitions during video recording.

2. Does this lens suffer from focus breathing?

No, the lens features a specialised mechanism designed to suppress focus breathing, making it highly suitable for professional video applications.

3. What is the 35mm equivalent focal length?

On a Micro Four Thirds camera, the 10-25mm focal length provides a 35mm full-frame equivalent field of view of 20-50mm.

4. How do I switch between autofocus and manual focus?

The lens features a built-in focus clutch mechanism. Simply pull the focus ring back to instantly switch from autofocus to accurate manual focus.

5. Is this lens suitable for low-light photography?

Absolutely. The constant f/1.7 maximum aperture allows excellent light gathering capability, making it ideal for low-light environments and achieving shallow depth of field.

How to Use / Care Instructions

To engage manual focus, pull the focus ring towards the camera body using the focus clutch mechanism. For video recording, utilise the stepless aperture ring for smooth exposure adjustments without introducing clicking noises into your audio. Keep the front and rear elements clean using a high-quality blower and a microfibre cloth. When changing lenses, do so in a clean, dust-free environment to protect your camera's sensor and the rear lens element.

The Panasonic Leica DG Vario-Summilux 10-25mm f/1.7 ASPH Lens (H-X1025GC) is a premium Micro Four Thirds optic offering a versatile 20-50mm equivalent range. Combining a fast constant f/1.7 aperture, suppressed focus breathing, and a de-clicked aperture ring, it delivers exceptional optical performance and precise control for both professional photographers and videographers.