Sony Alpha 9 III vs Sony Alpha SLT-A57

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Alpha 9 III compared with Alpha SLT-A57

	SonyAlpha 9 III	SonyAlpha SLT-A57
Overview
Released
Released	January 2024	April 2012
Image and sensor
Camera type
Camera type	Mirrorless	Translucent mirror
Sensor format
Sensor format	Full frame	APS-C
Sensor type
Sensor type	Stacked Exmor RS CMOS with global shutter	Exmor APS HD CMOS
Sensor dimensions
Sensor dimensions	35.6 × 23.8 mm	23.5 × 15.6 mm
Effective resolution
Effective resolution	24.6 MP	16.1 MP
Largest image
Largest image	6000 × 4000	4912 × 3264
RAW recording
RAW recording	Yes	Yes
Standard ISO range
Standard ISO range	250–25600	100–16000
Sensor detail
Sensor detail	Approximately 25.2 million total pixels; integral memory and global exposure rather than sequential line exposure.	16.7 million total photosites; fixed translucent mirror feeds a dedicated phase-detection AF sensor while the main sensor supplies live view
Image formats
Image formats	JPEG, HEIF and Sony ARW 5.0 RAW.	JPEG, RAW (Sony ARW 2.3), RAW+JPEG and 3D MPO panoramas; 3:2 or 16:9 stills
ISO detail
ISO detail	Standard ISO 250–25600 for stills and movies; stills expand to ISO 125–51200.	Auto ISO 100–3200; multi-frame noise reduction extends sensitivity to ISO 25600; movies ISO 100–3200
Image processor
Image processor	BIONZ XR with dedicated AI processing unit.	BIONZ
Lens and shooting
Lens mount
Lens mount	Sony E-mount	Sony A-mount
Stabilisation
Stabilisation	Sensor shift	Sensor shift
Maximum continuous burst
Maximum continuous burst	120 fps	10 fps
Lens detail
Lens detail	–	Compatible Sony, Minolta and Konica Minolta A-mount AF lenses; kit lenses are separate from body specifications
Autofocus
Autofocus	Up to 759 still-image or 627 movie phase-detection points; sensitivity EV −5 to 20 with an F2 lens at ISO 100 equivalent. Current UK specification includes automatic subject selection and people, animals, birds, insects, cars, trains and aircraft; launch reviews precede later firmware enhancements.	15-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
Shutter
Shutter	–	1/4000–30 seconds and Bulb; flash sync 1/160 second
Burst detail
Burst detail	Up to 120 fps full-resolution electronic bursts with AF/AE tracking under Sony test conditions; speed depends on lens compatibility and shooting settings. Pre-Capture retains up to one second before full shutter press. No mechanical shutter.	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 detail
Stabilisation detail	Five-axis sensor shift; 8.0-stop CIPA pitch/yaw claim with FE 50mm F1.2 GM and long-exposure noise reduction off. Active and Dynamic Active movie modes supported.	SteadyShot INSIDE sensor shift for stills, maker claim approximately 2.5–4.5 stops; electronic stabilisation for movies
Flash
Flash	–	Automatic 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 controls
Exposure controls	–	PASM, 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 resolution
Highest video resolution	3840 × 2160 at 120 fps	1920 × 1080 at 60 fps
Video detail
Video detail	Up to uncropped 3840 × 2160 120p NTSC or 100p PAL; 4K 60p uses 6K oversampling. Supports 10-bit 4:2:2, S-Log3 and S-Cinetone; All-Intra 4K tops out at 60p. External HDMI RAW output is separate from internal recording.	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.
Audio
Audio	–	Built-in stereo microphone with wind-noise reduction, external stereo microphone input and mono playback speaker
Screen and viewfinder
Viewfinder
Viewfinder	Electronic	Electronic
Screen size
Screen size	3.2″	3″
Screen dots
Screen dots	2,095,104	921,600
Touchscreen
Touchscreen	Yes	No
Tilting screen
Tilting screen	Yes	Yes
Display detail
Display detail	Four-axis LCD tilts and opens sideways; approximately 98° up, 40° down, 180° sideways and 270° rotation.	Xtra Fine LCD with 180° tilt and 270° rotation on a bottom hinge; focus peaking and magnification; dots count colour subpixels
Viewfinder detail
Viewfinder detail	0.64-inch Quad-XGA OLED with 9437184 dots and approximately 0.90× magnification with a 50 mm lens at infinity; selectable up to 240 fps NTSC or 200 fps PAL.	0.46-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-Fi
Wi-Fi	Yes	–
Bluetooth
Bluetooth	Yes	–
Battery life (maker's claim)
Battery life (maker's claim)	530 photographs	550 photographs
Body weight
Body weight	617 g	539 g (better)
Release detail
Release detail	Sony UK announced availability in January 2024; Japan's announcement specifies 26 January. The main date retains UK month precision.	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 media
Recording media	Both slots accept CFexpress Type A or UHS-I/UHS-II SD.	Single slot accepting SD, SDHC, SDXC, Memory Stick PRO Duo and PRO-HG Duo
Ports
Ports	USB Type-C at 10 Gbps, Multi/Micro USB, full-size HDMI, 1000BASE-T Ethernet, sync terminal, 3.5 mm microphone and headphone sockets and digital-audio Multi Interface Shoe.	USB 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 connections
Wireless connections	Wi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz and Bluetooth 5.0.	–
Battery life detail
Battery life detail	NP-FZ100; Sony UK CIPA approximately 530 photographs with LCD or 400 with viewfinder. Japan lists 520/410 respectively. USB Type-C Power Delivery charging and power supported.	NP-FM500H; CIPA maker claim approximately 550 photographs using the viewfinder or 590 using the LCD
Charging
Charging	–	Supplied BC-VM10A external charger
Dimensions
Dimensions	Approximately 136.1 × 96.9 × 82.9 mm (width × height × maximum depth); grip-to-monitor depth 72.8 mm.	Approximately 132.1 × 97.5 × 80.7 mm (width × height × depth), excluding protrusions
Weight detail
Weight detail	Sony UK specifies approximately 617 g body only or 702 g with battery and memory card; Japan specifies 618/703 g respectively. Main figures use the UK specification.	Approximately 539 g body only; 618 g including battery and Memory Stick PRO Duo
Colours
Colours	–	Black
In the box
In the box	NP-FZ100 battery, BC-QZ1 charger, power cord, cable protector, shoulder strap, body cap, accessory shoe cap and eyepiece cup, according to Sony UK.	NP-FM500H battery, BC-VM10A charger, shoulder strap, eyepiece cup, USB cable and software CD; lenses depend on kit