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Sony Alpha 6400 vs Sony Alpha 7C II

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SonyAlpha 6400SonyAlpha 7C II
Overview
ReleasedFebruary 2019September 2023
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatAPS-CFull frame
Sensor typeExmor CMOSBack-illuminated Exmor R CMOS
Sensor dimensions23.5 × 15.6 mm35.9 × 23.9 mm
Effective resolution24.2 MP33 MP
Largest image6000 × 40007008 × 4672
RAW recordingYesYes
Standard ISO range100–32000100–51200
Sensor detailApproximately 25.0 million total pixels; 3:2 aspect ratioApproximately 34.1 million total pixels; optical low-pass filter; maker maximum movie effective resolution 27.6 MP
Image formatsJPEG, compressed RAW and RAW+JPEG; ARW 2.3; 14-bit RAW under Sony's stated conditionsJPEG, HEIF and RAW (Sony ARW 5.0); 14-bit RAW output; compressed, lossless-compressed and uncompressed RAW options; XAVC S, XAVC S-I and XAVC HS movies
ISO detailISO 102400 is expanded; Auto ISO limits are configurableStandard still-image and movie ISO 100–51200; still-image extension ISO 50–204800; movie extension reaches ISO 102400. Photography Blog lists a lower extended maximum; Sony’s explicit specification is used.
Image processorBIONZ XBIONZ XR and dedicated AI processing unit
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationOptical lens stabilisationSensor shift
Maximum continuous burst11 fps10 fps
Lens detailOriginal ILCE-6400L includes E PZ 16–50mm F3.5–5.6 OSS; ILCE-6400M includes E 18–135mm F3.5–5.6 OSS. Later K/X kits use the OSS II standard zoom.Interchangeable E-mount; body-only and FE 28–60 mm f/4–5.6 kit offered; the photo shows both body colours with this optional kit lens
Autofocus425 phase-detection and 425 contrast-detection points; Real-time Tracking and human Eye AF. Animal Eye AF for stills was added by firmware in June 2019; not a launch feature.Fast Hybrid AF; up to 759 phase-detection points for stills or 627 for movies; EV -4 to 20 at ISO 100 with an f/2 lens; current maker subjects include automatic selection, humans, animals, birds, insects, cars, trains and aircraft
Shutter30 seconds to 1/4000 second plus Bulb; electronic first curtain and silent shooting; flash sync 1/160 secondElectronic first-curtain mechanical shutter up to 1/4000 second; silent electronic shutter up to 1/8000 second; 30-second exposures and Bulb; flash sync 1/160 second full-frame or 1/200 second APS-C with Sony flash
Burst detailMechanical Hi+ up to 11 fps with AF/AE tracking, or silent shooting up to 8 fps; Sony lists 116 Standard JPEG, 115 Fine JPEG, 99 Extra Fine JPEG, 46 RAW or 44 RAW+JPEG images.Up to 10 fps Hi+; maker buffer approximately 44 compressed RAW, 27 lossless-compressed RAW or 18 uncompressed RAW images; over 1,000 Fine JPEGs. Amateur Photographer notes 10 fps requires compressed RAW and gives 8 fps live-view continuous or 6 fps with lossless-compressed RAW.
Stabilisation detailOptical correction depends on the lens; no sensor-shift stabilisationFive-axis sensor shift; maker claim 7 stops under CIPA pitch/yaw testing with the FE 50 mm f/1.2 GM lens and long-exposure noise reduction off; current maker movie modes include Dynamic Active and Active electronic correction
FlashBuilt-in pop-up flash; guide number 6 at ISO 100 in metres; Multi Interface ShoeNo built-in flash; Multi Interface Shoe supports compatible external flash
Exposure controlsPASM, auto and scene modes, Sweep Panorama, DRO, Auto HDR and interval shooting1200-zone evaluative metering; exposure compensation ±5 EV
Video
Highest video resolution3840 × 2160 at 30 fps3840 × 2160 at 60 fps
Video detailXAVC S 4K up to 30p/24p at 100 Mbps in the Japanese NTSC specification; Full HD up to 120p. Full-pixel readout without binning, S-Log2, S-Log3 and HLG; HDMI 4:2:2 8-bit output.Internal 3840 × 2160 up to 60p NTSC or 50p PAL, with 10-bit 4:2:2 options; 60p/50p requires Super 35 crop. Full-frame 30p is oversampled from approximately 7K; Full HD up to 120p NTSC or 100p PAL. XAVC S-I 4K reaches 600 Mbps at 60p. S-Log3, S-Cinetone, user LUT display and AI Auto Framing; HDMI output supports 10-bit 4:2:2, without RAW video output.
AudioStereo microphone and 3.5 mm microphone input; no headphone outputBuilt-in stereo microphone; 3.5 mm microphone and headphone sockets; digital-audio Multi Interface Shoe; compatible accessories support four-channel 24-bit LPCM
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots921,6001,036,800
TouchscreenYesYes
Tilting screenYesYes
Display detailScreen tilts approximately 180° up or 74° down; touch focus, shutter, tracking and touchpadSide-opening vari-angle touchscreen; opens approximately 176° and rotates approximately 270°; touch menu operation
Viewfinder detail0.39-type OLED, 2,359,296 dots; approximately 0.70× 35 mm-equivalent magnification; 60/120 fps display modes0.39-type XGA OLED; 2,359,296 dots; approximately 0.70× magnification with a 50 mm lens at infinity; 60 or 120 fps refresh
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)410 photographs560 photographs
Body weight359 g429 g
Release detailSony Hong Kong states availability from mid-February 2019; month precision is retained. This is the original ILCE-6400; later lens-kit editions use the same camera body.Sony Australia specifies retail availability from September 2023. Photography Blog reports the original Alpha 7C remained in the range alongside the II. Current maker specifications include later-supported subject recognition and movie-stabilisation features.
Recording mediaOne shared SD/Memory Stick slot; SDHC/SDXC UHS-IOne SD slot supporting UHS-I and UHS-II; no CFexpress support
PortsMulti/Micro USB, Micro HDMI Type D, microphone input and Multi Interface ShoeUSB-C (USB 3.2 at 5 Gbps), Micro HDMI Type D, 3.5 mm microphone and headphone sockets and digital-audio Multi Interface Shoe
Wireless connections2.4 GHz Wi-Fi, NFC and Bluetooth connectivity; smartphone location linkingWi-Fi 802.11a/b/g/n/ac at 2.4 and 5 GHz; Bluetooth 4.2; no NFC; Creators’ App remote operation and image transfer
Battery life detailNP-FW50; CIPA approximately 410 photographs with LCD or 360 with viewfinderNP-FZ100; current Sony CIPA claim approximately 560 photographs with LCD or 530 with viewfinder; actual movie claim approximately 105 minutes with LCD or 100 with viewfinder. Both launch-period reviews give lower 540/510-shot figures.
ChargingIn-camera USB charging and USB power supplyUSB-C in-camera charging and power supply with USB Power Delivery; maker specifies an 18 W or higher USB PD source and 3 A cable
Dimensions120.0 × 66.9 × 59.7 mm; depth from grip to monitor 49.9 mmApproximately 124.0 × 71.1 × 63.4 mm; depth from grip to monitor 58.6 mm
Weight detailApproximately 359 g body only (Sony Japan); 403 g with battery and memory cardApproximately 429 g body only; 514 g with battery and memory card; both exclude lens. Photography Blog gives 525 g labelled body only and Amateur Photographer gives 524 g; maker’s explicit figures are used.
MaterialsMagnesium alloy design; dust and moisture resistance is not guaranteed in all conditionsMaker specifies recycled materials including SORPLAS in the body, depending on production timing
ColoursBlack or silver; availability varies by kit and regionSilver/black or black
In the boxNP-FW50 battery, AC-UUD12 adapter, shoulder strap, body cap, accessory shoe cap, eyepiece cup and Micro USB cable (Japanese specification); lenses depend on kit–

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