§ 03 Head to head

Olympus M.Zuiko Digital 45 mm f/1.8 vs Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S.

Olympus 45mm f/1.8 has a longer reach. Panasonic 42.5mm f/1.7 is 0.2 stops brighter maximum aperture.

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 Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. is a 42.5mm f/1.7 prime. On paper the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. comes out ahead, 5 advantages to 3, but which one suits you depends on what you shoot.

01

Key differences

From manufacturer specifications

Why is the Olympus M.Zuiko Digital 45 mm f/1.8 better than the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S.?

  • Longer reach (45mm vs 42.5mm)
  • 14 g lighter (116 g vs 130 g)
  • 4 mm shorter (46 mm vs 50 mm long)

Why is the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. better than the Olympus M.Zuiko Digital 45 mm f/1.8?

  • 0.2 stops brighter maximum aperture (f/1.7 vs f/1.8)
  • Wider field of view (42.5mm vs 45mm)
  • Focuses 19 cm closer (0.31 m vs 0.5 m)
  • Has optical image stabilization
  • Newer design (2015 vs 2011)
02

Which should you buy?

By use
  • low-light For low-light shooting, the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. has the edge: its f/1.7 aperture gathers more light than f/1.8.
03

Specification

17 rows · better value flagged ◆
SpecificationOlympus M.Zuiko Digital 45 mm f/1.8Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S.
Focal length45mm 42.5mm
Maximum aperturef/1.8 f/1.7 ◆
Minimum aperturef/22 f/22
Lens typePrime lens Prime lens
FormatMicro Four Thirds Micro Four Thirds
Weight116 g (4.09 oz) ◆130 g (4.59 oz)
Dimensions56 x 46 mm 55 x 50 mm
Minimum focusing distance0.5 m (19.69 inches) 0.31 m (12.20 inches) ◆
Image stabilizationNo Yes ◆
Weather sealingNo No
Aperture ringNo No
Aperture blades7 7
Optical construction9 elements / 8 groups 10 elements / 8 groups
Filter size37 mm 37 mm
Lens mountMicro Four Thirds Micro Four Thirds
Released2011 2015
Price—$499.99 list price
04

Size

Drawn to relative scale
  • A · Olympus
  • B · Panasonic
  • 46 × 56 mm
  • 50 × 55 mm

The Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. is 4 mm longer and 14 g heavier than the Olympus M.Zuiko Digital 45 mm f/1.8.

05

Sample frames

Shot on each lens

Olympus M.Zuiko Digital 45 mm f/1.8

2026 10 12 - No flowers today
2026 10 12 - No flowers today by Andreas Dotzler
PA110724
PA110724 by cb de damiette
PA110729 copie
PA110729 copie by cb de damiette
_X240021_DxO
_X240021_DxO by illustr8a
06

Video reviews

4 on YouTube
Video thumbnail for Olympus M.Zuiko Digital 45 mm f/1.8 review 1
Video thumbnail for Olympus M.Zuiko Digital 45 mm f/1.8 review 2
Video thumbnail for Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. review 1
Video thumbnail for Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. review 2
07

Questions

Which lens has the brighter aperture, the Olympus M.Zuiko Digital 45 mm f/1.8 or the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S.?
The Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. opens to f/1.7, against f/1.8 on the Olympus M.Zuiko Digital 45 mm f/1.8, 0.2 stops brighter.
Which is lighter, the Olympus M.Zuiko Digital 45 mm f/1.8 or the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S.?
The Olympus M.Zuiko Digital 45 mm f/1.8 weighs 116 g, 14 g less than the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. (130 g).
Which focuses closer, the Olympus M.Zuiko Digital 45 mm f/1.8 or the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S.?
The Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. focuses down to 0.31 m, against 0.5 m for the Olympus M.Zuiko Digital 45 mm f/1.8.
Do the Olympus M.Zuiko Digital 45 mm f/1.8 and the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. have image stabilization?
Only the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. has optical image stabilization.
Is the Olympus M.Zuiko Digital 45 mm f/1.8 or the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. better for low-light shooting?
For low-light shooting, the Panasonic G 42.5 mm f/1.7 ASPH. POWER O.I.S. has the edge: its f/1.7 aperture gathers more light than f/1.8.
08

Other comparisons