The Leica Summilux 9mm f/1.7 ASPH is a Panasonic 9mm prime for Micro Four Thirds, released in 2023. It covers 18mm in full-frame terms at a maximum aperture of f/1.7. It offers weather sealing and a 130g build.
Best for: Street, architecture, and environmental photography
Pros
- Fast f/1.8 aperture for handheld low-light shooting
- Compact and light build
- Weather sealed for outdoor and adverse conditions
Cons
- Higher price than entry-level alternatives
What this lens is good for
Vlogging and interiors
At just 130g with an 18mm full-frame equivalent field of view, this is an easy lens to hold at arm’s length for vlogging, and wide enough to capture cramped interiors. The fast f/1.7 aperture and weather sealing add flexibility for indoor and low-light creator work.
Astrophotography
An 18mm equivalent at f/1.7 captures a generous swathe of sky, enough for the arch of the Milky Way, in a tiny weather-sealed package. The close 0.095m focus distance also lets you place a foreground element near the camera for dramatic nightscapes. Full guide →
Landscapes
The wide angle suits sweeping landscapes and architecture, and the light weight makes it effortless to carry on long hikes. Weather sealing means it keeps working when the conditions turn, which wide-angle landscape work often invites.
Specifications
| Lens | |
| Brand | Panasonic |
| Type | prime |
| Status | current |
| Released | 2023-09 |
| Mount | mft |
| Optics | |
| Focal length | 9mm |
| FF equivalent | 18mm |
| Max aperture | f/1.7 |
| Min aperture | f/16 |
| Aperture blades | 9 |
| Elements / Groups | 11 / 9 |
| Focus | |
| Autofocus | Stepping Motor |
| MF override | Yes |
| Min focus distance | 0.095m |
| Max magnification | 0.25x |
| Stabilisation | |
| OIS | No |
| Dual IS compatible | No |
| Physical | |
| Weather sealed | Yes |
| Filter size | 55mm |
| Weight | 130g |
| Dimensions | 40mm length x 60mm diameter |
| Pricing | |
| Price (approx.) | $799 USD |