The LEICA DG SUMMILUX 9mm F1.7 ASPH. H-X09 is a high-performance, large-aperture ultra-wide prime lens for the Micro Four Thirds system. Perfect for capturing the sweeping scale of Japanese cities and landscapes, this lens offers an 18mm equivalent focal length with a remarkably bright F1.7 maximum aperture.
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Contact Jasumo Now →Unique for an ultra-wide lens, it also boasts a superb close-focusing ability, achieving half-macro photography (0.5x equivalent magnification) with a minimum focusing distance of just 0.095m. This combination of speed, wide angle, and close focus capability makes it an exceptionally versatile and creative tool for tourists.
This LEICA DG SUMMILUX lens is an ideal choice for photographers in Japan who want a fast, sharp, and highly portable lens capable of dramatic perspectives and intimate close-ups. The F1.7 aperture is particularly useful for astrophotography or capturing well-exposed, atmospheric shots of Japanese nightlife without a tripod.
The lens features an advanced construction of 12 elements in 9 groups, including specialized elements (2 Aspherical, 2 ED, and 1 UHR lens) to correct aberrations effectively and ensure high image clarity right into the corners. The metal mount guarantees durability and precision.
Its wide angle of view (100°) is perfect for grand architecture and landscapes. What sets it apart is its ability to focus down to just 0.095m, achieving a 0.5x equivalent maximum magnification. This allows the photographer to get extremely close to small subjects while still capturing a wide view of the background, creating a unique, exaggerated perspective effect. The 7-blade circular aperture produces attractive, smooth bokeh.
| Feature | Specification |
| Lens Mount | Micro Four Thirds mount (Metal) |
| Focal Length (Actual) | 9mm |
| Focal Length (35mm Equiv.) | 18mm |
| Maximum Aperture | F1.7 |
| Minimum Focusing Distance | 0.095 meters |
| Maximum Magnification | 0.25x (0.50x equivalent) |
| Filter Diameter | Ø55mm |
| Mass | Approx. 130g |
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The F1.7 aperture on an 18mm equivalent lens is extremely fast. It allows for significantly better performance in low-light conditions, reducing the need for high ISOs or long exposures. It also offers the ability to isolate subjects even at wide angles by creating a shallow depth-of-field, which is rare for an ultra-wide lens.
This means you can focus extremely close to your subject (0.095m) and the subject will be projected onto the sensor at half its actual size (0.5x life-size). This is highly unusual for an 18mm equivalent lens and provides unique creative options for detailed close-up shots.
Yes, despite the wide 18mm equivalent angle of view, this lens accepts standard Ø55mm filters. This is important for landscape photographers who rely on polarizers or neutral density filters to control light and reflections without introducing dark corners (vignetting).
As a modern MFT lens, it is fully compatible with the high-speed contrast-detect and DFD (Depth From Defocus) autofocus systems of Panasonic and Olympus cameras. The AF performance is typically fast, quiet, and precise for stills and video.
The Micro Four Thirds mount is a standard shared by Panasonic (Lumix G series) and Olympus/OM SYSTEM (OM-D and PEN series). This lens will work seamlessly on all cameras from both brands.
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