Sony Alpha ILCE-6400M 24.2MP Mirrorless Digital SLR Camera (Black) with 18-135mm Zoom Lens | APS-C Sensor |Real-Time Eye Auto Focus | 4K Vlogging Camera | Tiltable LCD – Black

• Sony a6400 camera body (black) with body cap installed

• Sony E 18–135mm f/3.5–5.6 OSS zoom lens

• Front (55 mm) and rear lens caps (installed)

• ALC‑SH153 lens hood

• Rubber eyepiece cup

• NP‑FW50 lithium-ion rechargeable battery (1020 mAh)

• USB cable (Type A to Micro‑B, approx. 23")

• AC‑UUD12 AC adapter

• Neck shoulder strap

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1. How fast is the autofocus, and what tracking features does it have?

The a6400 boasts a lightning-fast 0.02-second autofocus acquisition, thanks to its 425 phase-detection + 425 contrast-detection points covering approximately 84% of the frame  It also features advanced Real-time Eye AF and Real-time Tracking, intelligently selecting and following a subject’s eye as soon as you half-press the shutter—ensuring reliable focus in action or portraits.

2. What resolution videos can it record, and are there any professional profiles included?

The a6400 records UHD 4K video without pixel binning, which means it oversamples for sharp footage at up to 30 fps. For slow motion, it handles Full HD at up to 120 fps . Plus, it supports cinema-grade profiles like S-Log2/3, HLG for HDR, and includes a S&Q (Slow & Quick) mode—ranging from 1 to 120 fps.

3. Is there a time limit for video recording?

Yes, due to regulatory and file system constraints, the a6400 caps each video clip at 29 minutes and 59 seconds. You’ll have to restart recording manually to continue.

4. Does the a6400 overheat during extended video recording?

Generally, no—unlike some earlier Sony models, it’s designed with better thermal management. Most users report continuous 4K recording for over two hours with external power without overheating. That said, extreme temperatures can still pose a challenge for any mirrorless camera.

5. Can I use touch controls for autofocus?

Absolutely. The responsive rear screen supports Touch Focus, Touch Tracking, and even Touchpad Focus, allowing you to move the focus point intuitively while looking through the EVF.

6. How long does the battery last, and are there other power options?

Using the LCD screen, the NP‑FW50 battery delivers approximately 410 shots, or about 360 shots when using the viewfinder . You can also charge or power the camera via USB, which is handy for on-the-go charging or tethered setups.

7. What kind of port and connectivity options are available?

Connectivity includes:

• Wi-Fi, Bluetooth, and NFC for easy file sharing and remote control via Sony’s PlayMemories app .

• A micro-HDMI port for video output.

• A 3.5mm microphone input for improved audio capture .

8. What are the viewfinder and display specs?

• The OLED EVF offers 2.36 million dots, 100% coverage, and options to run at 60 or 120 fps for smoother live view .

• The 3-inch touchscreen also has 921.6k dots and tilts up 180°, which is perfect for vlogging or framing selfies .

9. Does it support burst shooting and how many frames can it hold?

Yes—continuous shooting hits up to 11 fps, with approximately 46 RAW frames or 116 JPEGs in the buffer before it slows down.

10. What media storage does it use, and is there a capacity limit?

The a6400 uses one UHS-I SD slot (compatible with SD/SDHC/SDXC/Memory Stick Duo). There’s no official maximum capacity, but users report successful use of cards up to 256GB, and higher-capacity UHS-I cards should also work since the camera supports exFAT formatting .