OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II vs Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH.
The bottom line
These cover different focal lengths — the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II is 75-300mm, the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. is 25mm — so they're not really substitutes. Pick by the field of view you actually need: the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II for super-telephoto, the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. for standard.
Choose the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II if…
- ✓You need more reach — it goes to 300mm vs 25mm for distant subjects, wildlife and sport.
- ✓You want one-lens flexibility — a 75-300mm zoom covers what the fixed 25mm can't reframe.
- ✓You like close-focus work — 0.23x magnification vs 0.11x.
Choose the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. if…
- ✓You want more light and background blur — f/1.4 is faster than f/4.8, better for low light and subject separation.
- ✓You shoot wide — it starts at 25mm vs 75mm for landscapes, interiors and architecture.
- ✓You prefer a fast, compact single focal length — a 25mm prime over a zoom.
- ✓You value portability — at 200g (7.1 oz) it's lighter than the 423g (14.9 oz) alternative for travel and all-day carry.
Where they differ
- ›Aperture: the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. opens to f/1.4 vs the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II's f/4.8 — more light and shallower depth-of-field.
- ›Focal range: OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II is 75-300mm, Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. is 25mm — different framing and reach.
- ›Type: the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II is a zoom (flexible framing), the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. a prime (one focal length, usually brighter and lighter).
- ›Weight: the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. is 200g (7.1 oz) vs 423g (14.9 oz) — you'll feel the difference handheld.
Frequently asked
Is the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II or the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. better?
These cover different focal lengths — the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II is 75-300mm, the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. is 25mm — so they're not really substitutes. Pick by the field of view you actually need: the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II for super-telephoto, the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. for standard.
Who should choose the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II?
Choose the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II if you need more reach — it goes to 300mm vs 25mm for distant subjects, wildlife and sport. Choose it if you want one-lens flexibility — a 75-300mm zoom covers what the fixed 25mm can't reframe. Choose it if you like close-focus work — 0.23x magnification vs 0.11x.
Who should choose the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH.?
Choose the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. if you want more light and background blur — f/1.4 is faster than f/4.8, better for low light and subject separation. Choose it if you shoot wide — it starts at 25mm vs 75mm for landscapes, interiors and architecture. Choose it if you prefer a fast, compact single focal length — a 25mm prime over a zoom. Choose it if you value portability — at 200g (7.1 oz) it's lighter than the 423g (14.9 oz) alternative for travel and all-day carry.
What is the main difference between the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II and the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH.?
Aperture: the Panasonic LEICA DG SUMMILUX 25mm f/1.4 ASPH. opens to f/1.4 vs the OM System M.Zuiko Digital ED 75-300mm f/4.8-6.7 II's f/4.8 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 75-300mm | 25mm |
| Lens Type | Zoom | Prime |
| Optical Elements | 17 | 9 |
| Optical Groups | 11 | 7 |
| Aperture & Iris | ||
| Maximum Aperture | f/4.8 | f/1.4 |
| Minimum Aperture | f/22 | f/16 |
| Aperture Blades | 7 | 9 |
| Rounded Aperture | No | Yes |
| Coverage & Angle | ||
| Format Coverage | Micro Four Thirds | Micro Four Thirds |
| Lens Mount | Micro Four Thirds | Micro Four Thirds |
| Angle of View | 16° – 4° | 47° |
| 35mm Equivalent | 150-600mm | 50-50mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | Stepping | Stepping |
| Focus Limiter | No | No |
| AF/MF Switch | No | No |
| Min Focus Distance | 90 cm | 30 cm |
| Max Magnification | 0.23x | 0.11x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $599 | $599 |
| Filter Size | 58mm | 46mm |
| Diameter | 68.5mm | 60.4mm |
| Length | 116.5mm | 50mm |
| Weight | 423g (14.9 oz) | 200g (7.1 oz) |
| Weather Sealed | No | No |
| Tripod Collar | No | No |
