Best low-light lenses for the OM System OM-3
9 low-light lenses that fit the OM System OM-3 (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 OM System OM-3 — the full comparison is below.
One limit of this table: it lists only Micro Four Thirds lenses that mount natively on the OM System OM-3 — lenses fitted through an adapter are not included here. See which mounts adapt to which.
What these focal lengths actually give you on the OM System OM-3
The OM System OM-3 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 OM System OM-3 frames like 100mm, not the "normal" view its marked number implies.
| Lens | Marked | Frames like, on the OM System OM-3 |
|---|---|---|
| Panasonic Leica DG 42.5mm f/1.2 | 42.5mm | 85mm |
| OM System M.Zuiko 20mm f/1.4 PRO | 20mm | 40mm |
| Panasonic Leica DG 25mm f/1.4 II | 25mm | 50mm |
| Panasonic Leica DG 10-25mm f/1.7 | 10-25mm | 20–50mm |
| Panasonic Leica DG 15mm f/1.7 | 15mm | 30mm |
| Panasonic Lumix G 42.5mm f/1.7 ASPH Power OIS | 42.5mm | 85mm |
| OM System M.Zuiko 17mm f/1.8 | 17mm | 34mm |
| Olympus M.Zuiko 45mm f/1.8 | 45mm | 90mm |
| OM System M.Zuiko 75mm f/1.8 | 75mm | 150mm |
Weight & weather sealing on the OM System OM-3
On long approaches the decision is often made by weight, not aperture. Published weights for 9 of the 9 lenses above:
| Lens | Weight | Weather sealing |
|---|---|---|
| Panasonic Leica DG 15mm f/1.7 | 115g | Not verified |
| Olympus M.Zuiko 45mm f/1.8 | 116g | Not verified |
| OM System M.Zuiko 17mm f/1.8 | 120g | Not verified |
| Panasonic Lumix G 42.5mm f/1.7 ASPH Power OIS | 130g | None claimed (Source specification states "Sealing: No".) |
| Panasonic Leica DG 25mm f/1.4 II | 205g | Not verified |
| OM System M.Zuiko 20mm f/1.4 PRO | 247g | Weather-sealed |
| OM System M.Zuiko 75mm f/1.8 | 305g | Not verified |
| Panasonic Leica DG 42.5mm f/1.2 | 425g | Not verified |
| Panasonic Leica DG 10-25mm f/1.7 | 690g | Not verified |
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.
FAQ
What is the best low-light lens for the OM System OM-3?
Panasonic Leica DG 42.5mm f/1.2 (42.5mm f/1.2) is the standout low-light option that fits the OM System OM-3. 9 low-light Micro Four Thirds lenses fit in total — compare them below.
Do these low-light lenses fit the OM System OM-3?
Yes — every lens here is a Micro Four Thirds mount lens, so it fits the OM System OM-3 and covers its Micro Four Thirds sensor.
What is the lightest low-light lens for the OM System OM-3?
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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Other uses on the OM System OM-3: Wide-angle (6) Travel (8) Astrophotography (4) Everyday (10) Budget (5) Street (5) Standard prime (4) Telephoto (9) Sports & action (7) Wildlife (4) Portrait (6)
All lenses for the OM System OM-3 · the same use across mounts: Low-light lenses for Micro Four Thirds · all cameras