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Sony Alpha 7C II vs Sony Alpha SLT-A57

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

Better figure, where one is clearly better

SonyAlpha 7C IISonyAlpha SLT-A57
Overview
ReleasedSeptember 2023April 2012
Image and sensor
Camera typeMirrorlessTranslucent mirror
Sensor formatFull frameAPS-C
Sensor typeBack-illuminated Exmor R CMOSExmor APS HD CMOS
Sensor dimensions35.9 × 23.9 mm23.5 × 15.6 mm
Effective resolution33 MP16.1 MP
Largest image7008 × 46724912 × 3264
RAW recordingYesYes
Standard ISO range100–51200100–16000
Sensor detailApproximately 34.1 million total pixels; optical low-pass filter; maker maximum movie effective resolution 27.6 MP16.7 million total photosites; fixed translucent mirror feeds a dedicated phase-detection AF sensor while the main sensor supplies live view
Image formatsJPEG, 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 moviesJPEG, RAW (Sony ARW 2.3), RAW+JPEG and 3D MPO panoramas; 3:2 or 16:9 stills
ISO detailStandard 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.Auto ISO 100–3200; multi-frame noise reduction extends sensitivity to ISO 25600; movies ISO 100–3200
Image processorBIONZ XR and dedicated AI processing unitBIONZ
Lens and shooting
Lens mountSony E-mountSony A-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst10 fps10 fps
Lens detailInterchangeable 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 lensCompatible Sony, Minolta and Konica Minolta A-mount AF lenses; kit lenses are separate from body specifications
AutofocusFast 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 aircraft15-point phase-detection AF with three cross sensors; EV −1–18 at ISO 100 with an F2.8 lens; AF-S, AF-A, AF-C and manual focus; zone and local selection, tracking AF and Eye-Start
ShutterElectronic 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 flash1/4000–30 seconds and Bulb; flash sync 1/160 second
Burst detailUp 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.Up to 12 fps with full-time continuous AF in Tele-zoom Continuous Advance Priority AE: 1.4× centre crop, medium/small JPEG only. Full-resolution Continuous Advance Priority AE reaches 10 fps; ordinary drive 8 fps Hi or 3 fps Lo. Maker buffer claim at 10 fps: 23 Fine JPEG, 27 Standard JPEG, 21 RAW or 18 RAW+JPEG frames; cropped 12 fps: 23 Fine or 25 Standard JPEG frames. In the 10/12 fps AF modes aperture is controlled to f/3.5, or the maximum aperture of a slower lens; the 12 fps maximum image is approximately 8.4 MP.
Stabilisation detailFive-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 correctionSteadyShot INSIDE sensor shift for stills, maker claim approximately 2.5–4.5 stops; electronic stabilisation for movies
FlashNo built-in flash; Multi Interface Shoe supports compatible external flashAutomatic pop-up flash, guide number 10 in metres at ISO 100; ADI and pre-flash TTL control; compatible external flash required for wireless flash and high-speed sync
Exposure controls1200-zone evaluative metering; exposure compensation ±5 EVPASM, Intelligent Auto, Superior Auto, scene and panorama modes; 1200-zone metering; ±3 EV compensation in 1/3 steps; three-frame Auto HDR, D-Range Optimizer, Picture Effects and Auto Portrait Framing
Video
Highest video resolution3840 × 2160 at 60 fps1920 × 1080 at 60 fps
Video detailInternal 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.Japan/NTSC model: 1920 × 1080 AVCHD 2.0 at 60p/28 Mbps, 60i/24 or 17 Mbps, and 24p/24 or 17 Mbps. PAL models use 50p, 50i and 25p. MP4 supports 1440 × 1080 or VGA. P/A/S/M movie exposure modes require manual focus; continuous phase-detection AF is available with automatic movie exposure.
AudioBuilt-in stereo microphone; 3.5 mm microphone and headphone sockets; digital-audio Multi Interface Shoe; compatible accessories support four-channel 24-bit LPCMBuilt-in stereo microphone with wind-noise reduction, external stereo microphone input and mono playback speaker
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots1,036,800921,600
TouchscreenYesNo
Tilting screenYesYes
Display detailSide-opening vari-angle touchscreen; opens approximately 176° and rotates approximately 270°; touch menu operationXtra Fine LCD with 180° tilt and 270° rotation on a bottom hinge; focus peaking and magnification; dots count colour subpixels
Viewfinder detail0.39-type XGA OLED; 2,359,296 dots; approximately 0.70× magnification with a 50 mm lens at infinity; 60 or 120 fps refresh0.46-type SVGA electronic finder, 100% coverage; 1,440,000 effective dots at maximum magnification (1.04× with a 50 mm lens), or 1,253,280 at standard magnification (0.97×); electronic level and grids
Connections and design
Wi-FiYes–
BluetoothYes–
Battery life (maker's claim)560 photographs550 photographs
Body weight429 g539 g
Release detailSony 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.Sony UK specifies early April 2012 for European availability; Japan’s revised announcement specifies 27 April 2012. April is the earliest maker-stated retail precision found.
Recording mediaOne SD slot supporting UHS-I and UHS-II; no CFexpress supportSingle slot accepting SD, SDHC, SDXC, Memory Stick PRO Duo and PRO-HG Duo
PortsUSB-C (USB 3.2 at 5 Gbps), Micro HDMI Type D, 3.5 mm microphone and headphone sockets and digital-audio Multi Interface ShoeUSB 2.0 Hi-Speed, mini HDMI Type C, 3.5 mm stereo microphone input, wired remote and DC input; optional infrared remote; Auto-lock accessory shoe
Wireless connectionsWi-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-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.NP-FM500H; CIPA maker claim approximately 550 photographs using the viewfinder or 590 using the LCD
ChargingUSB-C in-camera charging and power supply with USB Power Delivery; maker specifies an 18 W or higher USB PD source and 3 A cableSupplied BC-VM10A external charger
DimensionsApproximately 124.0 × 71.1 × 63.4 mm; depth from grip to monitor 58.6 mmApproximately 132.1 × 97.5 × 80.7 mm (width × height × depth), excluding protrusions
Weight detailApproximately 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.Approximately 539 g body only; 618 g including battery and Memory Stick PRO Duo
MaterialsMaker specifies recycled materials including SORPLAS in the body, depending on production timing–
ColoursSilver/black or blackBlack
In the box–NP-FM500H battery, BC-VM10A charger, shoulder strap, eyepiece cup, USB cable and software CD; lenses depend on kit

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