Panasonic Lumix G 20mm f/1.7 II ASPH. Lens
The Panasonic 20mm f/1.7 II ASPH. is a 20mm f/1.7 lens designed for Micro Four Thirds mount cameras. Used copies start from $125 on GearFocus, with buyer protection on every purchase.

Panasonic Lumix G 20mm f/1.7 II ASPH. Lens
Own One Like This?
Make room for more gear in minutes!
Sell your Panasonic 20mm f/1.7 II ASPH. on GearFocusUsed Panasonic 20mm f/1.7 II ASPH. Listings on GearFocus
Lens Overview — Panasonic 20mm f/1.7 II ASPH.
Key Features — Panasonic 20mm f/1.7 II ASPH.
20mm f/1.7 Prime: Equivalent to a 40mm field of view on Micro Four Thirds, making it a natural everyday and street photography focal length.
Fast f/1.7 Maximum Aperture: Allows for low-light shooting and selective focus with visible background separation even on a smaller sensor.
ASPH. Optical Design: Aspherical lens elements help minimize distortion and aberrations for cleaner, sharper images across the frame.
Native MFT Mount: Designed exclusively for Micro Four Thirds, ensuring full electronic communication with compatible Panasonic and Olympus bodies.
Autofocus Support: Built-in AF motor enables autofocus operation alongside manual focus for flexibility across different shooting situations.
87g Compact Build: One of the lightest pancake-style primes available for MFT, keeping the overall camera kit small and easy to carry.
Lens Specifications — Panasonic 20mm f/1.7 II ASPH.
| Spec | Detail |
|---|---|
| Use Cases | Street, Travel, Portrait, Product, Creative Effects |
| Lens Type | Pancake |
| Format | Micro Four Thirds (MFT) |
| Zoom/Prime | Prime |
| Focal Length | 20mm |
| Maximum Aperture | f/1.7 |
| Camera System | Mirrorless |
| Lens Mount | Micro Four Thirds |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 46mm |
Description — Panasonic 20mm f/1.7 II ASPH.
The Panasonic Lumix G 20mm f/1.7 II ASPH. is a prime lens designed for the Micro Four Thirds mirrorless system. It features a fixed 20mm focal length that falls within the standard focal length range, paired with a fast f/1.7 maximum aperture that gives photographers meaningful control over depth of field and the ability to shoot in challenging lighting conditions. Weighing only 87g, it is an exceptionally lightweight option that complements the compact nature of MFT mirrorless bodies.
The lens uses a Micro Four Thirds mount for native system compatibility and supports both autofocus and manual focus operation. A 46mm filter thread keeps the lens compact and makes it easy to use with smaller, affordable filter sets. It is worth noting that no image stabilization is present in this lens, so body-based stabilization would be required if that feature is needed.
Pros — Panasonic 20mm f/1.7 II ASPH.
- ✓Fast f/1.7 maximum aperture supports shooting in lower light and offers depth-of-field control
- ✓Extremely lightweight at just 87g, ideal for compact mirrorless setups
- ✓Native Micro Four Thirds mount ensures full compatibility with MFT mirrorless cameras
Cons — Panasonic 20mm f/1.7 II ASPH.
- ✗No image stabilization built into the lens
- ✗Fixed 20mm focal length offers no zoom flexibility
- ✗46mm filter thread, while convenient, limits accessory crossover with larger lenses in a kit
Reviews — Panasonic 20mm f/1.7 II ASPH.
Videos — Panasonic 20mm f/1.7 II ASPH.
Panasonic 20mm F1.7 II ASPH Review with Panasonic G9 — The Hybrid Shooter
Frequently Asked Questions — Panasonic 20mm f/1.7 II ASPH.
What camera mount does this lens use?+
The Panasonic Lumix G 20mm f/1.7 II ASPH. uses the Micro Four Thirds mount. It is designed specifically for Micro Four Thirds mirrorless cameras.
Does this lens have image stabilization?+
No, this lens does not include built-in image stabilization. Shooters who require stabilization will need to rely on in-body stabilization if their camera supports it.
Does the lens support autofocus?+
Yes, the lens supports both autofocus and manual focus. This gives users flexibility depending on the shooting scenario.
How heavy is this lens?+
The lens weighs 87g, making it one of the lighter options for the Micro Four Thirds system and well-suited to compact mirrorless setups.
What filter size does this lens take?+
The lens has a 46mm filter thread, which is a compact size commonly found on small prime lenses in the Micro Four Thirds system.




