Best low-light lenses for the Sony a6400
73 low-light lenses that fit the Sony a6400 (Sony E 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 Laowa Argus 35mm f/0.95 FF. At f/0.95 it is the brightest of the 73 low-light Sony E lenses that fit the Sony a6400 — the full comparison is below.
It is manual focus — no autofocus on the Sony a6400. If you want autofocus for low-light, the brightest AF option here is Sirui Sniper 16mm f/1.2 at f/1.2. It is a full-frame lens. It fits and shoots at full resolution, and the glass often carries over if you move to a full-frame body later — but for the same framing it is larger, heavier and dearer than a lens built for this sensor. The brightest APS-C option here is Sirui Sniper 16mm f/1.2 at f/1.2.
Check the Laowa Argus 35mm f/0.95 FF price on Amazon →
One limit of this table: it lists only Sony E lenses that mount natively on the Sony a6400 — lenses fitted through an adapter are not included here. See which mounts adapt to which.
What these focal lengths actually give you on the Sony a6400
The Sony a6400 has an APS-C sensor, so it sees a 1.5× crop of what each lens projects. Every focal length below therefore frames 1.5× tighter than its marked number. A 50mm on the Sony a6400 frames like 75mm, not the "normal" view its marked number implies.
Weight & weather sealing on the Sony a6400
On long approaches the decision is often made by weight, not aperture. Published weights for 57 of the 73 lenses above (the other 16 have no verified weight in our dataset yet — omitted, never estimated):
| Lens | Weight | Weather sealing |
|---|---|---|
| Samyang AF 35mm f/1.8 FE | 120g | Weather-sealed |
| Sony FE 50mm f/1.8 | 186g | None claimed (Sony makes no dust- or moisture-resistance claim) |
| TTArtisan AF 35mm f/1.8 E | 199g | Not verified (weight from the third-party E-mount list row 'AF 35mm F1.8'; sealing not stated on the source page) |
| Sony FE 28mm f/2 | 200g | Not verified (weight from Sony product code SEL-28F20; sealing not stated on the source page) |
| Sony E 50mm f/1.8 OSS | 202g | Not verified (weight from Sony product code SEL-50F18; sealing not stated on the source page) |
| Sony E 15mm f/1.4 G | 219g | Weather-sealed |
| Sony Sonnar T* E 24mm f/1.8 ZA | 225g | Not verified (weight from Sony product code SEL-24F18Z; sealing not stated on the source page) |
| Samyang AF 24mm f/1.8 FE | 230g | Not verified |
| Samyang AF 75mm f/1.8 FE | 230g | None claimed (Samyang makes no weather-sealing claim) |
| TTArtisan AF 56mm f/1.8 E | 233g | Not verified (weight from the third-party E-mount list row 'AF 56mm F1.8'; sealing not stated on the source page) |
| Sigma 30mm f/1.4 DC DN Contemporary | 265g | None claimed (Sigma's sealed mount excludes the Sony E version) |
| Viltrox AF 33mm f/1.4 | 270g | Not verified |
| Tokina atx-m 23mm f/1.4 E | 276g | Not verified |
| Sigma 56mm f/1.4 DC DN Contemporary | 280g | None claimed (Sigma's sealed mount is L, X and Nikon Z only, not Sony E) |
| Sony FE 35mm f/1.8 | 280g | Weather-sealed (dust- and moisture-resistant, but no gasket at the mount) |
| Sony Sonnar T* FE 55mm f/1.8 ZA | 281g | Not verified (weight from Sony product code SEL-55F18Z; sealing not stated on the source page) |
| Tokina atx-m 33mm f/1.4 E | 285g | Not verified |
| Viltrox AF 56mm f/1.4 | 290g | Not verified |
| Sony FE 16mm f/1.8 G | 304g | Not verified (weight from Sony product code SEL-16F18G; sealing not stated on the source page) |
| Tokina atx-m 56mm f/1.4 E | 315g | Not verified |
| Sigma 23mm f/1.4 DC DN Contemporary | 330g | Mount gasket only (mount seal only, on every mount version) |
| Viltrox AF 35mm f/1.8 | 340g | Not verified (weight from the third-party E-mount list row 'AF 35/1.8 FE'; sealing not stated on the source page) |
| Sony FE 85mm f/1.8 | 371g | Weather-sealed |
| Sirui Sniper 23mm f/1.2 | 381g | Not verified (weight from the third-party E-mount list row '23mm F1.2'; sealing not stated on the source page) |
| Sirui Sniper 16mm f/1.2 | 384g | Not verified (weight from the third-party E-mount list row '16mm F1.2'; sealing not stated on the source page) |
| Sirui Sniper 33mm f/1.2 | 400g | Not verified (weight from the third-party E-mount list row '33mm F1.2'; sealing not stated on the source page) |
| Sigma 16mm f/1.4 DC DN Contemporary | 405g | None claimed |
| Sirui Sniper 56mm f/1.2 | 422g | Not verified (weight from the third-party E-mount list row '56mm F1.2'; sealing not stated on the source page) |
| Sony FE 24mm f/1.4 GM | 445g | Weather-sealed |
| Sony FE 14mm f/1.8 GM | 460g | Weather-sealed |
| Sirui Sniper 75mm f/1.2 | 466g | Not verified (weight from the third-party E-mount list row '75mm F1.2'; sealing not stated on the source page) |
| Zeiss Batis 85mm f/1.8 | 475g | Weather-sealed |
| Viltrox AF 85mm f/1.8 II | 484g | Not verified (weight from the third-party E-mount list row Viltrox 'AF 85mm F1.8 II'; sealing not stated on the source page) |
| Laowa 15mm f/2 Zero-D FE | 500g | None claimed |
| Samyang AF 85mm f/1.4 FE II | 509g | Not verified (weight from the third-party E-mount list row Samyang 'AF 85mm F1.4 FE II'; sealing not stated on the source page) |
| Sigma 24mm f/1.4 DG DN Art | 510g | Weather-sealed |
| Sony FE 50mm f/1.4 GM | 516g | Weather-sealed |
| Sony FE 35mm f/1.4 GM | 524g | Weather-sealed |
| Sigma 17-40mm f/1.8 DC Art | 525g | Weather-sealed |
| Sirui Aurora 85mm f/1.4 | 540g | Not verified (weight from the third-party E-mount list row 'Aurora Series 85mm F1.4'; sealing not stated on the source page) |
| Tamron 12-20mm F2.8 (A084) | 570g | Weather-sealed (Tamron's own term is "Moisture-Resistant Construction" — "leak-resistant seals throughout the lens barrel"; the maker does not use the words weather-sealed. Source page states "Length and weight are for Sony E-mount", so 570g is the Sony E figure (the nikon-z entry's 585g comes from a different source and is not in conflict).) |
| Sigma 85mm f/1.4 DG DN Art | 625g | Weather-sealed |
| Sony Distagon T* FE 35mm f/1.4 ZA | 630g | Not verified (weight from Sony product code SEL-35F14Z; sealing not stated on the source page) |
| Sigma 35mm f/1.4 DG DN Art | 640g | Weather-sealed |
| Sony FE 85mm f/1.4 GM II | 642g | Weather-sealed |
| Samyang AF 35mm f/1.4 FE II | 659g | Not verified (weight from the third-party E-mount list row Samyang 'AF 35mm F1.4 FE II'; sealing not stated on the source page) |
| Sigma 50mm f/1.4 DG DN Art | 660g | Weather-sealed |
| Meike AF 85mm f/1.4 MIX | 735g | Not verified (weight from the third-party E-mount list row '85mm F1.4 AF'; sealing not stated on the source page) |
| Samyang AF 135mm f/1.8 FE | 772g | Weather-sealed (rated for light rain, snow and dust) |
| Sony FE 50mm f/1.2 GM | 778g | Not verified (weight from Sony product code SEL-50F12GM; sealing not stated on the source page) |
| Sony Planar T* FE 50mm f/1.4 ZA | 778g | Not verified (weight from Sony product code SEL-50F14Z; sealing not stated on the source page) |
| Sony FE 85mm f/1.4 GM | 848g | Not verified (weight from Sony product code SEL-85F14GM; sealing not stated on the source page) |
| Sony FE 28-70mm f/2 GM | 918g | Weather-sealed |
| Sigma 28-45mm f/1.8 DG DN Art | 950g | Weather-sealed |
| Sony FE 135mm f/1.8 GM | 953g | Weather-sealed |
| 7Artisans AF 135mm f/1.8 | 1014g | Not verified (weight from the third-party E-mount list row 7Artisans 'AF 135mm F1.8'; sealing not stated on the source page) |
| Sony FE 50-150mm f/2 GM | 1340g | Not verified (weight from Sony product code SEL50150GM; sealing not stated on the source page) |
Packing light? The lightest here is the Samyang AF 35mm f/1.8 FE at 120g. The lightest weather-sealed option is the Samyang AF 35mm f/1.8 FE at 120g — the same lens.
Complete the kit for the Sony a6400
- The Laowa Argus 35mm f/0.95 FF takes 72mm front filters. One 72mm set (polariser, ND) also fits every other 72mm lens you add later — see which ones. 72mm filters on Amazon →
- The Sony a6400 takes an NP-FW50 battery (Memory Stick, SD cards) — a spare battery and the right card class are body-specific, not lens-specific. NP-FW50 battery on Amazon →
FAQ
What is the best low-light lens for the Sony a6400?
Laowa Argus 35mm f/0.95 FF (35mm f/0.95) is the standout low-light option that fits the Sony a6400. 73 low-light Sony E lenses fit in total — compare them below.
Do these low-light lenses fit the Sony a6400?
Yes — every lens here is a Sony E mount lens, so it fits the Sony a6400 and covers its APS-C sensor.
What is the lightest low-light lens for the Sony a6400?
The Samyang AF 35mm f/1.8 FE at 120g (manufacturer-published weight). The lightest weather-sealed option is the Samyang AF 35mm f/1.8 FE at 120g — the same lens. Weights for 57 of the 73 lenses on this page are in the weight table above.
Already own the Sony a6400, shopping for a spare or an upgrade? Sony a6400 on Amazon →
All lenses for the Sony a6400 · the same use across mounts: Low-light lenses for Sony E · all cameras