Leica DG Summilux 25 mm f/1.4 II ASPH vs YN 25 mm f/1.7 STM ASPH
Panasonic
Leica DG Summilux 25 mm f/1.4 II ASPH
Yongnuo
YN 25 mm f/1.7 STM ASPH
Here we are comparing the Panasonic Leica DG Summilux 25 mm f/1.4 II ASPH and the Yongnuo YN 25 mm f/1.7 STM ASPH. The Panasonic Leica DG Summilux 25 mm f/1.4 II ASPH is a 25mm standard prime lens with a maximum aperture of f/1.4, released in 2019. The Yongnuo YN 25 mm f/1.7 STM ASPH is a 25mm standard prime lens with a maximum aperture of f/1.7, released in 2021.
There is a 2 years difference between the Panasonic Leica DG Summilux 25 mm f/1.4 II ASPH and the Yongnuo YN 25 mm f/1.7 STM ASPH — the newer design may benefit from more recent optical engineering and coatings.
Below you will find a detailed side-by-side comparison of their specifications, features, and key differences.
Shopping links may contain affiliate codes that support this site at no extra cost to you.
| Compare | Fastest Aperture | Lightest |
|---|---|---|
| Mount | ||
| Sensor Size | MFT | MFT |
| Best For | Landscape Street | Landscape Street |
Price & Availability | ||
| Shop | ||
Optical Specifications | ||
| Focal Length | 25 mm | 25 mm |
| Aperture | f/1.4 | f/1.7 |
| Aperture Blades | 7 | 7 |
Features | ||
| Autofocus | Yes | Yes |
| Image Stabilization | No | No |
| Weather Sealed | No | No |
Close-up Performance | ||
| Min. Focus Distance | 0.3 m | 0.2 m |
| Max. Magnification | - | 0.2x |
Physical Specifications | ||
| Weight | 205 g | 150 g |
| Length | 63 mm | 66.6 mm |
| Diameter | 54.5 mm | 60.8 mm |
| Filter Thread | 46 mm | 52 mm |
Price & Availability | ||
| Release Year | 2019 | 2021 |
| Shop | ||
Shopping links may contain affiliate codes that support this site at no extra cost to you.
Comparing Panasonic Leica DG Summilux 25 mm f/1.4 II ASPH (25 mm, f/1.4) and Yongnuo YN 25 mm f/1.7 STM ASPH (25 mm, f/1.7).
Yongnuo YN 25 mm f/1.7 STM ASPH is the lightest at 150 g, Panasonic Leica DG Summilux 25 mm f/1.4 II ASPH weighs 205 g.
Panasonic Leica DG Summilux 25 mm f/1.4 II ASPH offers the fastest maximum aperture at f/1.4, allowing for better low-light performance and shallower depth of field.
Yongnuo YN 25 mm f/1.7 STM ASPH can focus closest at 0.2 m minimum focus distance.
Use the detailed comparison table below to see all specifications side-by-side and find the perfect lens for your photography needs.
Discover the best lenses for your camera mount and photography style
Top-rated Micro Four Thirds lenses optimized for Landscape Photography
Top-rated Micro Four Thirds lenses optimized for Portrait Photography
Top-rated Micro Four Thirds lenses optimized for Astrophotography
Explore all curated lens recommendations by mount and photography type
