OM System M.Zuiko Digital ED 12mm f/2.0 vs OM System M.Zuiko Digital ED 9-18mm f/4-5.6
The bottom line
The OM System M.Zuiko Digital ED 9-18mm f/4-5.6 is a zoom (9-18mm) and the OM System M.Zuiko Digital ED 12mm f/2.0 is a 12mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/2 vs f/4) and lighter to carry. Choose flexibility or a fast single focal length.
Choose the OM System M.Zuiko Digital ED 12mm f/2.0 if…
- ✓You want more light and background blur — f/2 is faster than f/4, better for low light and subject separation.
- ✓You prefer a fast, compact single focal length — a 12mm prime over a zoom.
Choose the OM System M.Zuiko Digital ED 9-18mm f/4-5.6 if…
- ✓You need more reach — it goes to 18mm vs 12mm for distant subjects, wildlife and sport.
- ✓You want one-lens flexibility — a 9-18mm zoom covers what the fixed 12mm can't reframe.
Where they differ
- ›Aperture: the OM System M.Zuiko Digital ED 12mm f/2.0 opens to f/2 vs the OM System M.Zuiko Digital ED 9-18mm f/4-5.6's f/4 — more light and shallower depth-of-field.
- ›Focal range: OM System M.Zuiko Digital ED 12mm f/2.0 is 12mm, OM System M.Zuiko Digital ED 9-18mm f/4-5.6 is 9-18mm — different framing and reach.
- ›Type: the OM System M.Zuiko Digital ED 9-18mm f/4-5.6 is a zoom (flexible framing), the OM System M.Zuiko Digital ED 12mm f/2.0 a prime (one focal length, usually brighter and lighter).
Frequently asked
Is the OM System M.Zuiko Digital ED 12mm f/2.0 or the OM System M.Zuiko Digital ED 9-18mm f/4-5.6 better?
The OM System M.Zuiko Digital ED 9-18mm f/4-5.6 is a zoom (9-18mm) and the OM System M.Zuiko Digital ED 12mm f/2.0 is a 12mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/2 vs f/4) and lighter to carry. Choose flexibility or a fast single focal length.
Who should choose the OM System M.Zuiko Digital ED 12mm f/2.0?
Choose the OM System M.Zuiko Digital ED 12mm f/2.0 if you want more light and background blur — f/2 is faster than f/4, better for low light and subject separation. Choose it if you prefer a fast, compact single focal length — a 12mm prime over a zoom.
Who should choose the OM System M.Zuiko Digital ED 9-18mm f/4-5.6?
Choose the OM System M.Zuiko Digital ED 9-18mm f/4-5.6 if you need more reach — it goes to 18mm vs 12mm for distant subjects, wildlife and sport. Choose it if you want one-lens flexibility — a 9-18mm zoom covers what the fixed 12mm can't reframe.
What is the main difference between the OM System M.Zuiko Digital ED 12mm f/2.0 and the OM System M.Zuiko Digital ED 9-18mm f/4-5.6?
Aperture: the OM System M.Zuiko Digital ED 12mm f/2.0 opens to f/2 vs the OM System M.Zuiko Digital ED 9-18mm f/4-5.6's f/4 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 12mm | 9-18mm |
| Lens Type | Prime | Zoom |
| Optical Elements | 8 | 14 |
| Optical Groups | 7 | 9 |
| Aperture & Iris | ||
| Maximum Aperture | f/2 | f/4 |
| Minimum Aperture | f/16 | f/22 |
| 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 | 84° | 100° – 62° |
| 35mm Equivalent | 24-24mm | 18-36mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | Stepping | Stepping |
| Focus Limiter | No | No |
| AF/MF Switch | No | No |
| Min Focus Distance | 20 cm | 20 cm |
| Max Magnification | 0.1x | 0.1x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $499 | $499 |
| Filter Size | 46mm | 52mm |
| Diameter | 56mm | 56.6mm |
| Length | 43.5mm | 43.5mm |
| Weight | 130g (4.6 oz) | 155g (5.5 oz) |
| Weather Sealed | No | No |
| Tripod Collar | No | No |
