OM System M.Zuiko Digital 45mm f/1.8 vs Panasonic LUMIX G 20mm f/1.7 ASPH.
The bottom line
These cover different focal lengths — the OM System M.Zuiko Digital 45mm f/1.8 is 45mm, the Panasonic LUMIX G 20mm f/1.7 ASPH. is 20mm — so they're not really substitutes. Pick by the field of view you actually need: the OM System M.Zuiko Digital 45mm f/1.8 for short-telephoto / portrait, the Panasonic LUMIX G 20mm f/1.7 ASPH. for wide-angle.
Choose the OM System M.Zuiko Digital 45mm f/1.8 if…
- ✓You need more reach — it goes to 45mm vs 20mm for distant subjects, wildlife and sport.
Choose the Panasonic LUMIX G 20mm f/1.7 ASPH. if…
- ✓You shoot wide — it starts at 20mm vs 45mm for landscapes, interiors and architecture.
Where they differ
- ›Aperture: the Panasonic LUMIX G 20mm f/1.7 ASPH. opens to f/1.7 vs the OM System M.Zuiko Digital 45mm f/1.8's f/1.8 — more light and shallower depth-of-field.
- ›Focal range: OM System M.Zuiko Digital 45mm f/1.8 is 45mm, Panasonic LUMIX G 20mm f/1.7 ASPH. is 20mm — different framing and reach.
Frequently asked
Is the OM System M.Zuiko Digital 45mm f/1.8 or the Panasonic LUMIX G 20mm f/1.7 ASPH. better?
These cover different focal lengths — the OM System M.Zuiko Digital 45mm f/1.8 is 45mm, the Panasonic LUMIX G 20mm f/1.7 ASPH. is 20mm — so they're not really substitutes. Pick by the field of view you actually need: the OM System M.Zuiko Digital 45mm f/1.8 for short-telephoto / portrait, the Panasonic LUMIX G 20mm f/1.7 ASPH. for wide-angle.
Who should choose the OM System M.Zuiko Digital 45mm f/1.8?
Choose the OM System M.Zuiko Digital 45mm f/1.8 if you need more reach — it goes to 45mm vs 20mm for distant subjects, wildlife and sport.
Who should choose the Panasonic LUMIX G 20mm f/1.7 ASPH.?
Choose the Panasonic LUMIX G 20mm f/1.7 ASPH. if you shoot wide — it starts at 20mm vs 45mm for landscapes, interiors and architecture.
What is the main difference between the OM System M.Zuiko Digital 45mm f/1.8 and the Panasonic LUMIX G 20mm f/1.7 ASPH.?
Aperture: the Panasonic LUMIX G 20mm f/1.7 ASPH. opens to f/1.7 vs the OM System M.Zuiko Digital 45mm f/1.8's f/1.8 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 45mm | 20mm |
| Lens Type | Prime | Prime |
| Optical Elements | 9 | 7 |
| Optical Groups | 7 | 5 |
| Aperture & Iris | ||
| Maximum Aperture | f/1.8 | f/1.7 |
| Minimum Aperture | f/22 | 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 | 27° | 57° |
| 35mm Equivalent | 90-90mm | 40-40mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | Stepping | DC |
| Focus Limiter | No | No |
| AF/MF Switch | No | No |
| Min Focus Distance | 50 cm | 20 cm |
| Max Magnification | 0.11x | 0.13x |
| 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 | $299 |
| Filter Size | 37mm | 46mm |
| Diameter | 56mm | 63mm |
| Length | 46.5mm | 25.5mm |
| Weight | 116g (4.1 oz) | 100g (3.5 oz) |
| Weather Sealed | No | No |
| Tripod Collar | No | No |
