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Sony Alpha 1 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 1 IISonyAlpha SLT-A57
Overview
ReleasedDecember 2024April 2012
Image and sensor
Camera typeMirrorlessTranslucent mirror
Sensor formatFull frameAPS-C
Sensor typeStacked Exmor RS CMOS with integral memoryExmor APS HD CMOS
Sensor dimensions35.9 × 24 mm23.5 × 15.6 mm
Effective resolution50.1 MP16.1 MP
Largest image8640 × 57604912 × 3264
RAW recordingYesYes
Standard ISO range100–32000100–16000
Sensor detailApproximately 50.5 million total pixels; Pixel Shift Multi Shooting uses four or 16 exposures combined in compatible computer software.16.7 million total photosites; fixed translucent mirror feeds a dedicated phase-detection AF sensor while the main sensor supplies live view
Image formatsJPEG, HEIF and Sony ARW 5.0 RAW.JPEG, RAW (Sony ARW 2.3), RAW+JPEG and 3D MPO panoramas; 3:2 or 16:9 stills
ISO detailStandard ISO 100–32000 for stills and movies; stills expand to ISO 50–102400.Auto ISO 100–3200; multi-frame noise reduction extends sensitivity to ISO 25600; movies ISO 100–3200
Image processorBIONZ XR and dedicated AI processing unit.BIONZ
Lens and shooting
Lens mountSony E-mountSony A-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst30 fps10 fps
Lens detail–Compatible Sony, Minolta and Konica Minolta A-mount AF lenses; kit lenses are separate from body specifications
AutofocusUp to 759 phase-detection points for stills and movies; sensitivity EV −4 to 20 in AF-S with an F2 lens at ISO 100. Automatic or selected recognition of people, animals, birds, insects, cars, trains and aircraft. Sony's current feature page specifies Real-time Recognition AF+ from firmware version 4.00; launch reviews describe earlier firmware.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–1/4000–30 seconds and Bulb; flash sync 1/160 second
Burst detailUp to 30 fps electronic Hi+ with AF/AE tracking under compatible-lens and maker conditions; uncompressed or lossless-compressed RAW up to 20 fps; mechanical Hi+ up to 10 fps. Pre-Capture retains up to one second before full shutter press, subject to camera temperature and shooting conditions. A custom button can temporarily change burst speed.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; centre 8.5 stops and periphery 7.0 stops under CIPA 2024 pitch/yaw/roll conditions with FE 50mm F1.2 GM and long-exposure noise reduction off. Active and Dynamic Active movie modes narrow the field of view and are unavailable in 8K or at frame rates of 120 fps or higher.SteadyShot INSIDE sensor shift for stills, maker claim approximately 2.5–4.5 stops; electronic stabilisation for movies
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–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 resolution7680 × 4320 at 30 fps1920 × 1080 at 60 fps
Video detailSony's current feature page lists internal 7680 × 4320 30p XAVC HS with 8.6K oversampling and 10-bit 4:2:2 support. Lower-resolution 4K up to 120p has approximately 10% crop; Full HD 240 fps is lower resolution. S-Log3, S-Cinetone and imported LUTs supported; external HDMI RAW 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–Built-in stereo microphone with wind-noise reduction, external stereo microphone input and mono playback speaker
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3.2″3″
Screen dots2,095,104921,600
TouchscreenYesNo
Tilting screenYesYes
Display detailFour-axis TFT LCD opens approximately 98° up, 40° down and 180° sideways, with 270° rotation when opened sideways.Xtra Fine LCD with 180° tilt and 270° rotation on a bottom hinge; focus peaking and magnification; dots count colour subpixels
Viewfinder detail0.64-inch Quad-XGA OLED with 9437184 dots and approximately 0.90× magnification with a 50 mm lens at infinity. Selectable 60/120/240 fps; standard magnification is unavailable at 240 fps.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-FiYes–
BluetoothYes–
Battery life (maker's claim)520 photographs550 photographs
Body weight658 g539 g
Release detailSony UK specifies availability in December 2024; no release day inferred. Exact technical figures use Sony Japan because the UK specification URLs were inaccessible during research.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 mediaBoth slots accept CFexpress 2.0 Type A or UHS-I/UHS-II SD.Single slot accepting SD, SDHC, SDXC, Memory Stick PRO Duo and PRO-HG Duo
PortsUSB Type-C at 10 Gbps, Multi/Micro USB, full-size HDMI, 2.5GBASE-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 connectionsWi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz and Bluetooth 5.0.–
Battery life detailNP-FZ100; Sony Japan CIPA approximately 520 photographs with LCD or 420 with viewfinder. PhotographyBlog's 530/400 figures are not used. 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–Supplied BC-VM10A external charger
DimensionsApproximately 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 detailApproximately 658 g body only or 743 g with battery and memory card, excluding lens. PhotographyBlog's inconsistent 617 g figure is not used.Approximately 539 g body only; 618 g including battery and Memory Stick PRO Duo
Colours–Black
In the boxOne NP-FZ100 battery, BC-ZD1 dual-battery charger, cable protector, shoulder strap, body cap, accessory shoe cap and FDA-EP19/FDA-EP21 eyepiece cups, according to Sony Japan. USB Power Delivery AC adaptor and USB cable are not included.NP-FM500H battery, BC-VM10A charger, shoulder strap, eyepiece cup, USB cable and software CD; lenses depend on kit

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