The Panasonic Lumix G 20mm f/1.7 II ASPH is a Panasonic 20mm wide prime for Micro Four Thirds, released in 2013. It covers 40mm in full-frame terms at f/1.7 in an ultra-compact pancake build.
Best for: Street photography and travel where size matters
Pros
- Fast f/1.7 aperture in a pancake design
- Lightweight at 87g
- Updated AF motor over the original
Cons
- No OIS
- No weather sealing
What this lens is good for
Pancake street and everyday
A compact 87g pancake prime, a 40mm full-frame equivalent at a fast f/1.7, long a favourite for keeping a body small while gaining low-light ability and subject separation. The slightly-wide-of-normal view suits street, travel, and everyday shooting. Full guide →
Low light
The fast f/1.7 aperture gathers far more light than a kit zoom, making it a strong available-light lens for interiors and night street, especially on a stabilised body. The autofocus is slower than newer designs, so it suits deliberate and static shooting more than fast action.
Specifications
| Lens | |
| Brand | Panasonic |
| Type | prime |
| Status | current |
| Released | 2013-06 |
| Mount | mft |
| Optics | |
| Focal length | 20mm |
| FF equivalent | 40mm |
| Max aperture | f/1.7 |
| Min aperture | f/16 |
| Aperture blades | 7 |
| Elements / Groups | 7 / 5 |
| Focus | |
| Autofocus | Stepping Motor |
| MF override | Yes |
| Min focus distance | 0.2m |
| Max magnification | 0.1x |
| Stabilisation | |
| OIS | No |
| Dual IS compatible | No |
| Physical | |
| Weather sealed | No |
| Filter size | 46mm |
| Weight | 87g |
| Dimensions | 25.5mm length x 63mm diameter |
| Pricing | |
| Price (approx.) | $347 USD |