Olympus M.Zuiko Digital 45 mm f/1.8 § 03 Head to head
Olympus M.Zuiko Digital 45 mm f/1.8 vs Sirui 50 mm f/1.8 Anamorphic 1.33x
Olympus 45mm f/1.8 has a wider field of view. Sirui 50mm f/1.8 has a longer reach.
Both lenses are made for the Micro Four Thirds mount: the Olympus M.Zuiko Digital 45 mm f/1.8 is a 45mm f/1.8 prime, and the Sirui 50 mm f/1.8 Anamorphic 1.33x is a 50mm f/1.8 prime. On paper the Olympus M.Zuiko Digital 45 mm f/1.8 comes out ahead, 5 advantages to 3, but which one suits you depends on what you shoot.
Olympus M.Zuiko Digital 45 mm f/1.8 
Sirui 50 mm f/1.8 Anamorphic 1.33x 01
Key differences
Why is the Olympus M.Zuiko Digital 45 mm f/1.8 better than the Sirui 50 mm f/1.8 Anamorphic 1.33x?
- Wider field of view (45mm vs 50mm)
- 444 g lighter (116 g vs 560 g)
- 61 mm shorter (46 mm vs 106.6 mm long)
- Focuses 35 cm closer (0.5 m vs 0.85 m)
- Smaller filter thread (37 mm vs 67 mm)
Why is the Sirui 50 mm f/1.8 Anamorphic 1.33x better than the Olympus M.Zuiko Digital 45 mm f/1.8?
- Longer reach (50mm vs 45mm)
- More aperture blades (10 vs 7)
- Newer design (2018 vs 2011)
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Which should you buy?
- portrait For portrait photography, the Olympus M.Zuiko Digital 45 mm f/1.8 has the edge: it is 444 g lighter to carry.
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Specification
| Specification | Olympus M.Zuiko Digital 45 mm f/1.8 | Sirui 50 mm f/1.8 Anamorphic 1.33x |
|---|---|---|
| Focal length | 45mm | 50mm |
| Maximum aperture | f/1.8 | f/1.8 |
| Minimum aperture | f/22 | f/16 |
| Lens type | Prime lens | Prime lens |
| Format | Micro Four Thirds | — |
| Weight | 116 g (4.09 oz) ◆ | 560 g (19.75 oz) |
| Dimensions | 56 x 46 mm | 69.2 x 106.6 mm |
| Minimum focusing distance | 0.5 m (19.69 inches) ◆ | 0.85 m (33.46 inches) |
| Image stabilization | No | No |
| Weather sealing | No | — |
| Aperture ring | No | — |
| Aperture blades | 7 | 10 ◆ |
| Optical construction | 9 elements / 8 groups | 11 elements in 8 groups |
| Filter size | 37 mm ◆ | 67 mm |
| Lens mount | Micro Four Thirds | Micro Four Thirds, Sony E, Fujifilm X |
| Released | 2011 | 2018 |
| Price | — | $699 list price |
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Size
- A · Olympus
- B · Sirui
- 46 × 56 mm
- 106.6 × 69.2 mm
The Sirui 50 mm f/1.8 Anamorphic 1.33x is 61 mm longer and 444 g heavier than the Olympus M.Zuiko Digital 45 mm f/1.8.
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Sample frames
Olympus M.Zuiko Digital 45 mm f/1.8
Sirui 50 mm f/1.8 Anamorphic 1.33x
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Video reviews
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Questions
- Which is lighter, the Olympus M.Zuiko Digital 45 mm f/1.8 or the Sirui 50 mm f/1.8 Anamorphic 1.33x?
- The Olympus M.Zuiko Digital 45 mm f/1.8 weighs 116 g, 444 g less than the Sirui 50 mm f/1.8 Anamorphic 1.33x (560 g).
- Which focuses closer, the Olympus M.Zuiko Digital 45 mm f/1.8 or the Sirui 50 mm f/1.8 Anamorphic 1.33x?
- The Olympus M.Zuiko Digital 45 mm f/1.8 focuses down to 0.5 m, against 0.85 m for the Sirui 50 mm f/1.8 Anamorphic 1.33x.
- Do the Olympus M.Zuiko Digital 45 mm f/1.8 and the Sirui 50 mm f/1.8 Anamorphic 1.33x have image stabilization?
- No, neither lens has optical image stabilization; rely on in-body stabilization if your camera has it.
- Is the Olympus M.Zuiko Digital 45 mm f/1.8 or the Sirui 50 mm f/1.8 Anamorphic 1.33x better for portrait photography?
- For portrait photography, the Olympus M.Zuiko Digital 45 mm f/1.8 has the edge: it is 444 g lighter to carry.
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