Panasonic LUMIX G 20mm f/1.7 ASPH. vs TTArtisan 25mm f/2 C (Micro Four Thirds)
The bottom line
These cover different focal lengths — the Panasonic LUMIX G 20mm f/1.7 ASPH. is 20mm, the TTArtisan 25mm f/2 C (Micro Four Thirds) is 25mm — so they're not really substitutes. Pick by the field of view you actually need: the Panasonic LUMIX G 20mm f/1.7 ASPH. for standard, the TTArtisan 25mm f/2 C (Micro Four Thirds) for standard.
Choose the Panasonic LUMIX G 20mm f/1.7 ASPH. if…
- ✓You want more light and background blur — f/1.7 is faster than f/2, better for low light and subject separation.
Choose the TTArtisan 25mm f/2 C (Micro Four Thirds) if…
- ✓You're on a budget — $99 vs $299 leaves more for other gear.
- ✓You value portability — at 66g (2.3 oz) it's lighter than the 100g (3.5 oz) alternative for travel and all-day carry.
Where they differ
- ›Aperture: the Panasonic LUMIX G 20mm f/1.7 ASPH. opens to f/1.7 vs the TTArtisan 25mm f/2 C (Micro Four Thirds)'s f/2 — more light and shallower depth-of-field.
- ›Focal range: Panasonic LUMIX G 20mm f/1.7 ASPH. is 20mm, TTArtisan 25mm f/2 C (Micro Four Thirds) is 25mm — different framing and reach.
- ›Price: the TTArtisan 25mm f/2 C (Micro Four Thirds) is $99, $200 under the Panasonic LUMIX G 20mm f/1.7 ASPH..
Frequently asked
Is the Panasonic LUMIX G 20mm f/1.7 ASPH. or the TTArtisan 25mm f/2 C (Micro Four Thirds) better?
These cover different focal lengths — the Panasonic LUMIX G 20mm f/1.7 ASPH. is 20mm, the TTArtisan 25mm f/2 C (Micro Four Thirds) is 25mm — so they're not really substitutes. Pick by the field of view you actually need: the Panasonic LUMIX G 20mm f/1.7 ASPH. for standard, the TTArtisan 25mm f/2 C (Micro Four Thirds) for standard.
Who should choose the Panasonic LUMIX G 20mm f/1.7 ASPH.?
Choose the Panasonic LUMIX G 20mm f/1.7 ASPH. if you want more light and background blur — f/1.7 is faster than f/2, better for low light and subject separation.
Who should choose the TTArtisan 25mm f/2 C (Micro Four Thirds)?
Choose the TTArtisan 25mm f/2 C (Micro Four Thirds) if you're on a budget — $99 vs $299 leaves more for other gear. Choose it if you value portability — at 66g (2.3 oz) it's lighter than the 100g (3.5 oz) alternative for travel and all-day carry.
What is the main difference between the Panasonic LUMIX G 20mm f/1.7 ASPH. and the TTArtisan 25mm f/2 C (Micro Four Thirds)?
Aperture: the Panasonic LUMIX G 20mm f/1.7 ASPH. opens to f/1.7 vs the TTArtisan 25mm f/2 C (Micro Four Thirds)'s f/2 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 20mm | 25mm |
| Lens Type | Prime | Prime |
| Optical Elements | 7 | 6 |
| Optical Groups | 5 | 5 |
| Aperture & Iris | ||
| Maximum Aperture | f/1.7 | f/2 |
| Minimum Aperture | f/16 | f/16 |
| Aperture Blades | 7 | 7 |
| Rounded Aperture | No | No |
| Coverage & Angle | ||
| Format Coverage | Micro Four Thirds | Micro Four Thirds |
| Lens Mount | Micro Four Thirds | Micro Four Thirds |
| Angle of View | 57° | 47° |
| 35mm Equivalent | 40-40mm | 50-50mm |
| Focus | ||
| Autofocus | Yes | No |
| Focus Motor | DC | − |
| Focus Limiter | No | No |
| AF/MF Switch | No | No |
| Min Focus Distance | 20 cm | 15 cm |
| Max Magnification | 0.13x | 0.12x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $299 | $99 |
| Filter Size | 46mm | 43mm |
| Diameter | 63mm | 40mm |
| Length | 25.5mm | 23.5mm |
| Weight | 100g (3.5 oz) | 66g (2.3 oz) |
| Weather Sealed | No | No |
| Tripod Collar | No | No |
