Best wildlife lenses for the Sony a6400
8 wildlife lenses that fit the Sony a6400 (Sony E mount) — long reach and fast autofocus for birds and distant animals. Sorted brightest-aperture first; every spec from the manufacturer's catalog.
Start with the Sony FE 300mm f/2.8 GM OSS. At f/2.8 it is the brightest of the 8 wildlife Sony E lenses that fit the Sony a6400 — the full comparison is below.
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. That works in your favour here: the Sony FE 400-800mm f/6.3-8 G OSS reaches 1200mm of effective reach, which on a full-frame body would need a longer, heavier and far more expensive lens.
| Lens | Marked | Frames like, on the Sony a6400 |
|---|---|---|
| Sony FE 300mm f/2.8 GM OSS | 300mm | 450mm |
| Sony FE 400mm f/2.8 GM OSS | 400mm | 600mm |
| Sony FE 600mm f/4 GM OSS | 600mm | 900mm |
| Sony FE 70-300mm f/4.5-5.6 G OSS | 70-300mm | 105–450mm |
| Sony FE 100-400mm f/4.5 GM OSS | 100-400mm | 150–600mm |
| Sony FE 100-400mm f/5.6-8 OSS | 100-400mm | 150–600mm |
| Sony FE 200-600mm f/5.6-6.3 G OSS | 200-600mm | 300–900mm |
| Sony FE 400-800mm f/6.3-8 G OSS | 400-800mm | 600–1200mm |
Weight & weather sealing on the Sony a6400
On long approaches the decision is often made by weight, not aperture. Published weights for 8 of the 8 lenses above:
| Lens | Weight | Weather sealing |
|---|---|---|
| Sony FE 100-400mm f/5.6-8 OSS | 654g | Not verified |
| Sony FE 70-300mm f/4.5-5.6 G OSS | 854g | Not verified |
| Sony FE 300mm f/2.8 GM OSS | 1470g | Not verified |
| Sony FE 100-400mm f/4.5 GM OSS | 1840g | Not verified |
| Sony FE 200-600mm f/5.6-6.3 G OSS | 2115g | Not verified |
| Sony FE 400-800mm f/6.3-8 G OSS | 2475g | Not verified |
| Sony FE 400mm f/2.8 GM OSS | 2895g | Not verified |
| Sony FE 600mm f/4 GM OSS | 3040g | Not verified |
Packing light? The lightest here is the Sony FE 100-400mm f/5.6-8 OSS at 654g.
FAQ
What is the best wildlife lens for the Sony a6400?
Sony FE 300mm f/2.8 GM OSS (300mm f/2.8) is the standout wildlife option that fits the Sony a6400. 8 wildlife Sony E lenses fit in total — compare them below.
Do these wildlife 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 wildlife lens for the Sony a6400?
The Sony FE 100-400mm f/5.6-8 OSS at 654g (manufacturer-published weight). Weights for 8 of the 8 lenses on this page are in the weight table above.
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Other uses on the Sony a6400: Wide-angle (43) Astrophotography (26) Landscape (29) Vlogging (20) Travel (36) Budget (48) Low-light (73) Street (44) Pro standard zoom (19) Everyday (69) Compact (21) Standard prime (40) Budget pro (4) Telephoto (30) Wedding & event (27) Macro (10) Portrait (53) Sports & action (19)
All lenses for the Sony a6400 · the same use across mounts: Wildlife lenses for Sony E · all cameras