Best low-light lenses for the Panasonic Lumix G9 II

Panasonic Lumix G9 II · 2023 · 25.2 MP Micro Four Thirds · 658 g · in-body stabilisation

9 low-light lenses that fit the Panasonic Lumix G9 II (Micro Four Thirds mount) — fast apertures (f/1.8 and brighter) for dim conditions. Sorted brightest-aperture first; every spec from the manufacturer's catalog.

Start with the Panasonic Leica DG 42.5mm f/1.2. At f/1.2 it is the brightest of the 9 low-light Micro Four Thirds lenses that fit the Panasonic Lumix G9 II — the full comparison is below.

Last verified 2026-06-21 · Micro Four Thirds mount · Panasonic Micro Four Thirds body · 2× crop factor

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Check the Panasonic Leica DG 42.5mm f/1.2 price on Amazon →

Focal	Lens	Buy	Max aperture	Weight	Filter	Type	Coverage	Best for
42.5mm	Panasonic Leica DG 42.5mm f/1.2	Check price →	f/1.2	425 g	67mm	prime	M4/3	PortraitLow-lightWedding & event
20mm	OM System M.Zuiko 20mm f/1.4 PRO	Check price →	f/1.4	247 g	58mm	prime	M4/3	Standard primeEverydayLow-light
25mm	Panasonic Leica DG 25mm f/1.4 II	Check price →	f/1.4	205 g	46mm	prime	M4/3	Standard primeLow-light
10-25mm	Panasonic Leica DG 10-25mm f/1.7	Check price →	f/1.7	690 g	77mm	zoom	M4/3	Pro standard zoomWide-angleLow-lightAstrophotography
15mm	Panasonic Leica DG 15mm f/1.7	Check price →	f/1.7	115 g	46mm	prime	M4/3	StreetEverydayLow-light
42.5mm	Panasonic Lumix G 42.5mm f/1.7 ASPH Power OIS	Check price →	f/1.7	130 g	—	prime	M4/3	PortraitLow-lightBudget
17mm	OM System M.Zuiko 17mm f/1.8	Check price →	f/1.8	120 g	46mm	prime	M4/3	StreetEverydayLow-light
45mm	Olympus M.Zuiko 45mm f/1.8	Check price →	f/1.8	116 g	—	prime	M4/3	PortraitBudgetLow-light
75mm	OM System M.Zuiko 75mm f/1.8	Check price →	f/1.8	305 g	58mm	prime	M4/3	PortraitTelephotoLow-light

One limit of this table: it lists only Micro Four Thirds lenses that mount natively on the Panasonic Lumix G9 II — lenses fitted through an adapter are not included here. See which mounts adapt to which.

What these focal lengths actually give you on the Panasonic Lumix G9 II

The Panasonic Lumix G9 II has a Micro Four Thirds sensor, so it sees a 2× crop of what each lens projects. Every focal length below therefore frames 2× tighter than its marked number. A 50mm on the Panasonic Lumix G9 II frames like 100mm, not the "normal" view its marked number implies.

Effective focal lengths are the marked focal length × the 2× sensor crop factor — the field of view, not a change in the lens itself. Aperture and depth of field are unaffected.

Weight & weather sealing on the Panasonic Lumix G9 II

On long approaches the decision is often made by weight, not aperture. Published weights for 9 of the 9 lenses above:

Packing light? The lightest here is the Panasonic Leica DG 15mm f/1.7 at 115g. The lightest weather-sealed option is the OM System M.Zuiko 20mm f/1.4 PRO at 247g.

Weights and sealing as published for each lens — 5 from the manufacturer's own spec page, 4 from a published lens database or review quoting the maker's figure (per-lens source recorded in the dataset) · methodology

FAQ

What is the best low-light lens for the Panasonic Lumix G9 II?
Panasonic Leica DG 42.5mm f/1.2 (42.5mm f/1.2) is the standout low-light option that fits the Panasonic Lumix G9 II. 9 low-light Micro Four Thirds lenses fit in total — compare them below.

Do these low-light lenses fit the Panasonic Lumix G9 II?
Yes — every lens here is a Micro Four Thirds mount lens, so it fits the Panasonic Lumix G9 II and covers its Micro Four Thirds sensor.

What is the lightest low-light lens for the Panasonic Lumix G9 II?
The Panasonic Leica DG 15mm f/1.7 at 115g (manufacturer-published weight). The lightest weather-sealed option is the OM System M.Zuiko 20mm f/1.4 PRO at 247g. Weights for 9 of the 9 lenses on this page are in the weight table above.

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All lenses for the Panasonic Lumix G9 II · the same use across mounts: Low-light lenses for Micro Four Thirds · all cameras

Panasonic Leica DG 42.5mm f/1.2Affiliate linkAmazon →