The Leica DG Vario-Summilux 25-50mm f/1.7 ASPH is a Panasonic 25–50mm zoom for Micro Four Thirds, released in 2021. It covers 50–100mm in full-frame terms at a maximum aperture of f/1.7. It offers weather sealing and a 654g build.
Best for: Travel and everyday shooting with a standard zoom
Pros
- Constant f/2.8 aperture throughout the zoom range
- Weather sealed for outdoor and adverse conditions
Cons
- Bulkier than compact alternatives
- No optical stabilisation
- High price point
What this lens is good for
Video and portraits
A constant f/1.7 zoom covering 50-100mm full-frame equivalent, the telephoto partner to the 10-25mm. Together they cover 20-100mm equivalent at an aperture primes usually own, ideal for run-and-gun video and for portraits where you want zoom flexibility with strong separation.
Low-light events
The bright constant f/1.7 aperture across a short telephoto range suits dim event and indoor work, holding exposure as you zoom and giving subject separation throughout. Weather sealing supports use in poor conditions.
Specifications
| Lens | |
| Brand | Panasonic |
| Type | zoom |
| Status | current |
| Released | 2021-10 |
| Mount | mft |
| Optics | |
| Focal length | 25-50mm |
| FF equivalent | 50-100mm |
| Max aperture | f/1.7 |
| Min aperture | f/22 |
| Aperture blades | 9 |
| Elements / Groups | 23 / 16 |
| Focus | |
| Autofocus | Linear Motor |
| MF override | Yes |
| Min focus distance | 0.28m |
| Max magnification | 0.21x |
| Stabilisation | |
| OIS | No |
| Dual IS compatible | No |
| Physical | |
| Weather sealed | Yes |
| Filter size | 77mm |
| Weight | 654g |
| Dimensions | 100mm length x 80mm diameter |
| Pricing | |
| Price (approx.) | $1,497 USD |