Camera comparison
Sony a6400 vs FX30: what actually changes
What changes for your kit, what stays the same, and the two drawn to one scale. From Sony's published specifications.
What changes
- In-body stabilisation: only the FX30 has it, so every lens is steadied there, including unstabilised primes.
- Viewfinder: only the a6400 has one; with the FX30 you frame on the rear screen, harder in bright sun.
- Weight: the FX30 weighs 243 g more (646 g against 403 g with battery and card).
- Screen: tilts up 180° on the a6400, vari-angle on the FX30.
- Cards: 1 UHS-I slot on the a6400, 2 UHS-II on the FX30.
The same on both
- Same Sony E mount: every one of the 158 lenses fits both.
- Similar resolution: 24.2 and 26 MP.
120 × 66.9 mmFX30
129.7 × 77.8 mmCard
to scale
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Side by side
Differences only, as set.
| Camera | Sony a6400 | Sony FX30 |
|---|---|---|
| Lens mountSame | Sony E | Sony E |
| Sensor | APS-C 23.5 × 15.6 mm, 24.2 MP | APS-C 23.3 × 15.5 mm, 26 MP |
| In-body stabilisation | No | Yes |
| Viewfinder | 2.36M-dot electronic | None |
| Rear screen | 3" tilts up 180°, touch | 3" vari-angle, touch |
| Fastest burst | 11 fps mechanical | Not stated |
| Video | 4K up to 30p (24p from the full width) | 4K up to 60p oversampled from 6K; 4K 120p cropped |
| Memory cards | 1 slot, SD / Memory Stick, UHS-I | 2 slots, CFexpress Type A / SD, UHS-II |
| Battery | NP-FW50, about 410 shots | NP-FZ100, about 570 shots |
| Charges over USBSame | Yes | Yes |
| Microphone socketSame | Yes | Yes |
| Headphone socket | No | Yes |
| Built-in flash | Yes | No |
| Weather sealingSame | Not stated | Not stated |
| Size (W × H × D) | 120 × 66.9 × 59.7 mm | 129.7 × 77.8 × 84.5 mm |
| Weight with battery and card | 403 g | 646 g |
| Announced | 2019 | 2022 |
| Lenses that fit | 158 | 158 |
| Where to buy | Check price on AmazonSony page | Check price on AmazonSony page |
How big each one is
The FX30 is 9.7 mm wider, 10.9 mm taller and 24.8 mm deeper than the a6400 (129.7 − 120 = 9.7 mm wide).
120 × 59.7 mmFX30
129.7 × 84.5 mm
Choose by what matters to you
- The a6400 if you want a viewfinder, or weight matters most, or you shoot action in bursts.
- The FX30 if you want every lens stabilised, or you want a backup card slot, or you record video with sound, or you want more shots per charge, or you film yourself or shoot from odd angles.
The lenses each one takes
Both take the same 158 lenses on the Sony E mount, so a lens bought for one moves to the other. The a6400 is usually sold with the Sony E PZ 16-50mm F3.5-5.6 OSS.
a6400: first picks
- Everyday and travel: Sony E PZ 16-50mm F3.5-5.6 OSS II 24–75 mm equiv.
- People and portraits: Sigma 56mm F1.4 DC DN Contemporary 84 mm equiv.
- Wide scenes and rooms: Sony E PZ 10-20mm F4 G 15–30 mm equiv.
FX30: first picks
- Everyday and travel: Sony E PZ 16-50mm F3.5-5.6 OSS II 24–75 mm equiv.
- People and portraits: Sigma 56mm F1.4 DC DN Contemporary 84 mm equiv.
- Wide scenes and rooms: Sony E PZ 10-20mm F4 G 15–30 mm equiv.
Questions
Which is lighter, the a6400 or the FX30?
The a6400: 403 g against 646 g, each with battery and card, by the makers' figures.
Do a6400 lenses fit the FX30?
Yes. Both use the Sony E mount.
Do the a6400 and FX30 use the same battery?
No: the a6400 takes the NP-FW50 and the FX30 the NP-FZ100.
Facts checked 9 Oct 2026 against the makers' specification pages. How we check