Which lens has the brighter aperture, the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO or the Panasonic Leica DG Summilux 25mm F1.4 II ASPH?

The Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO opens to f/1.2, against f/1.4 on the Panasonic Leica DG Summilux 25mm F1.4 II ASPH, 0.4 stops brighter.

Which is lighter, the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO or the Panasonic Leica DG Summilux 25mm F1.4 II ASPH?

The Panasonic Leica DG Summilux 25mm F1.4 II ASPH weighs 205 g, 205 g less than the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO (410 g).

Do the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO and the Panasonic Leica DG Summilux 25mm F1.4 II ASPH 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 ED 25 mm f/1.2 PRO or the Panasonic Leica DG Summilux 25mm F1.4 II ASPH better for street photography?

For street photography, the Panasonic Leica DG Summilux 25mm F1.4 II ASPH has the edge: it is 205 g lighter to carry.

Is the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO or the Panasonic Leica DG Summilux 25mm F1.4 II ASPH better for travel?

For travel, the Panasonic Leica DG Summilux 25mm F1.4 II ASPH has the edge: it is 205 g lighter to carry.

§ 03 Head to head

Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO vs Panasonic Leica DG Summilux 25mm F1.4 II ASPH

Olympus 25mm f/1.2 is 0.4 stops brighter maximum aperture. Panasonic 25mm f/1.4 is 205 g lighter.

Both lenses are made for the Micro Four Thirds mount: the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO is a 25mm f/1.2 prime, and the Panasonic Leica DG Summilux 25mm F1.4 II ASPH is a 25mm f/1.4 prime. On paper the Panasonic Leica DG Summilux 25mm F1.4 II ASPH comes out ahead, 4 advantages to 2, but which one suits you depends on what you shoot.

Add a third lens →

Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO

f/1.2 · 25mm · 410 g

Panasonic Leica DG Summilux 25mm F1.4 II ASPH

f/1.4 · 25mm · 205 g

Key differences

From manufacturer specifications

Why is the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO better than the Panasonic Leica DG Summilux 25mm F1.4 II ASPH?

0.4 stops brighter maximum aperture (f/1.2 vs f/1.4)
More aperture blades (9 vs 7)

Why is the Panasonic Leica DG Summilux 25mm F1.4 II ASPH better than the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO?

205 g lighter (205 g vs 410 g)
33 mm shorter (54.5 mm vs 87 mm long)
Smaller filter thread (46 mm vs 62 mm)
Newer design (2019 vs 2016)

Which should you buy?

By use

street For street photography, the Panasonic Leica DG Summilux 25mm F1.4 II ASPH has the edge: it is 205 g lighter to carry.
travel For travel, the Panasonic Leica DG Summilux 25mm F1.4 II ASPH has the edge: it is 205 g lighter to carry.
low-light For low-light shooting, the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO has the edge: its f/1.2 aperture gathers more light than f/1.4.
astrophotography For astrophotography, the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO has the edge: its f/1.2 aperture gathers more light than f/1.4.

Specification

17 rows · better value flagged ◆

Specification	Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO	Panasonic Leica DG Summilux 25mm F1.4 II ASPH
Focal length	25mm	25mm
Maximum aperture	f/1.2 ◆	f/1.4
Minimum aperture	f/16	f/16
Lens type	Prime lens	Standard prime lens
Format	Micro Four Thirds	Micro Four Thirds
Weight	410 g (14.46 oz)	205 g (7.23 oz) ◆
Dimensions	70 x 87 mm	63 mm (diameter) x 54.5 mm (length)
Minimum focusing distance	0.30 m (11.81 inches)	0.3 m (11.81 in)
Maximum magnification	—	0.11x (0.22x 35mm equivalent)
Image stabilization	No	No
Weather sealing	Yes	Yes (dust- and splash-resistant)
Aperture ring	No	No
Aperture blades	9 ◆	7 (rounded)
Optical construction	19 elements / 14 groups	9 elements in 7 groups (includes 2 aspherical lenses and 1 Ultra High Refractive Index element)
Filter size	62 mm	46 mm ◆
Lens mount	Micro Four Thirds	Micro Four Thirds
Released	2016	2019

Size

Drawn to relative scale

A · Olympus
B · Panasonic

87 × 70 mm
54.5 × 63 mm

The Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO is 33 mm longer and 205 g heavier than the Panasonic Leica DG Summilux 25mm F1.4 II ASPH.

Sample frames

Shot on each lens

Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO

Panasonic Leica DG Summilux 25mm F1.4 II ASPH

Video reviews

4 on YouTube

Video thumbnail for Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO review 1

Video thumbnail for Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO review 2

Video thumbnail for Panasonic Leica DG Summilux 25mm F1.4 II ASPH review 1

Video thumbnail for Panasonic Leica DG Summilux 25mm F1.4 II ASPH review 2

Questions

Which lens has the brighter aperture, the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO or the Panasonic Leica DG Summilux 25mm F1.4 II ASPH?: The Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO opens to f/1.2, against f/1.4 on the Panasonic Leica DG Summilux 25mm F1.4 II ASPH, 0.4 stops brighter.
Which is lighter, the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO or the Panasonic Leica DG Summilux 25mm F1.4 II ASPH?: The Panasonic Leica DG Summilux 25mm F1.4 II ASPH weighs 205 g, 205 g less than the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO (410 g).
Do the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO and the Panasonic Leica DG Summilux 25mm F1.4 II ASPH 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 ED 25 mm f/1.2 PRO or the Panasonic Leica DG Summilux 25mm F1.4 II ASPH better for street photography?: For street photography, the Panasonic Leica DG Summilux 25mm F1.4 II ASPH has the edge: it is 205 g lighter to carry.
Is the Olympus M.Zuiko Digital ED 25 mm f/1.2 PRO or the Panasonic Leica DG Summilux 25mm F1.4 II ASPH better for travel?: For travel, the Panasonic Leica DG Summilux 25mm F1.4 II ASPH has the edge: it is 205 g lighter to carry.