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Sony Alpha 1 II vs Sony Alpha SLT-A99

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

Better figure, where one is clearly better

SonyAlpha 1 IISonyAlpha SLT-A99
Overview
ReleasedDecember 2024October 2012
Image and sensor
Camera typeMirrorlessTranslucent mirror
Sensor formatFull frameFull frame
Sensor typeStacked Exmor RS CMOS with integral memoryExmor CMOS
Sensor dimensions35.9 × 24 mm35.8 × 23.9 mm
Effective resolution50.1 MP24.3 MP
Largest image8640 × 57606000 × 4000
RAW recordingYesYes
Standard ISO range100–32000100–25600
Sensor detailApproximately 50.5 million total pixels; Pixel Shift Multi Shooting uses four or 16 exposures combined in compatible computer software.24.7 million total photosites; fixed translucent mirror directs light to the dedicated phase-detection AF module while the main sensor supplies live view
Image formatsJPEG, HEIF and Sony ARW 5.0 RAW.JPEG including Extra Fine, 14-bit RAW (Sony ARW 2.3) and RAW+JPEG; 3:2 or 16:9 stills; no 3D panorama
ISO detailStandard ISO 100–32000 for stills and movies; stills expand to ISO 50–102400.Standard ISO 100–25600; expanded ISO 50, 64 and 80; multi-frame noise reduction ISO 100–51200; movie sensitivity ISO 100–6400 or Auto ISO 100–3200
Image processorBIONZ XR and dedicated AI processing unit.BIONZ with front-end LSI
Lens and shooting
Lens mountSony E-mountSony A-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst30 fps6 fps
Lens detail–Sony, Minolta and Konica Minolta A-mount AF lenses; APS-C crop mode available; 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.19 dedicated phase-detection points including 11 cross sensors, with 102 on-sensor assist points; AF-D and assist points require supported lenses and firmware. AF-S, AF-A, AF-C, AF-D, direct manual and manual focus; AF range limiter and AF micro-adjustment; EV −1–18 at ISO 100 with an F2.8 lens
Shutter–1/8000–30 seconds and Bulb; flash sync 1/250 second; selectable electronic first curtain; maker-tested approximately 200,000 shutter operations
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.Full-frame continuous shooting up to 6 fps, APS-C up to 7 fps, or 2.5 fps Lo. Tele-zoom Continuous Advance Priority AE offers 8 fps at approximately 10 MP or 10 fps at approximately 4.6 MP; 10 fps is JPEG only. With UHS-I SD and ISO 320 or lower, or high-ISO noise reduction off, full-frame Hi buffer is 15 Extra Fine, 24 Fine or 29 Standard JPEGs, 15 RAW or 12 RAW+JPEG; Auto ISO with normal noise reduction reduces this to 11/12/12/10/8 frames respectively
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–No built-in flash; compatible external flash uses ADI or pre-flash TTL; Multi Interface Shoe, with supplied ADP-MAA adapter for Auto-lock accessories
Exposure controls–PASM, automatic, scene, panorama and tele-zoom continuous AE modes; 1200-zone metering; ±5 EV exposure compensation in 1/3 or 1/2 steps; D-Range Optimizer and Auto HDR
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: Full HD AVCHD 2.0 at 60p/28 Mbps, 60i/24 or 17 Mbps, and 24p/24 or 17 Mbps; MP4 up to 1440 × 1080 at 30 fps. A/S/M movie exposure requires manual focus; continuous phase-detection AF uses automatic exposure. Clean uncompressed HDMI output can operate alongside internal recording; recording limit approximately 29 minutes or 2 GB per file
Audio–Built-in stereo microphone, external stereo microphone input, headphone output, adjustable audio recording level and level display; mono playback speaker
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3.2″3″
Screen dots2,095,1041,228,800
TouchscreenYesNo
Tilting screenYesYes
Display detailFour-axis TFT LCD opens approximately 98° up, 40° down and 180° sideways, with 270° rotation when opened sideways.Three-axis WhiteMagic RGBW LCD tilts 140° upwards or 180° forwards and rotates 180° right or 90° left; 1,228,800 dots count colour subpixels; separate top status LCD
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.0.5-type XGA OLED Tru-Finder with 2,359,296 dots, 100% coverage and approximately 0.71× magnification with a 50 mm lens; focus peaking and magnification
Connections and design
Wi-FiYesNo
BluetoothYes–
Battery life (maker's claim)520 photographs410 photographs
Body weight658 g733 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 Korea announced late-October 2012 retail availability; Sony Japan specifies 26 October 2012. October is the earliest maker-stated on-sale precision read
Recording mediaBoth slots accept CFexpress 2.0 Type A or UHS-I/UHS-II SD.Two SD/SDHC/SDXC slots with UHS-I support; one also accepts Memory Stick PRO Duo/PRO-HG Duo; simultaneous backup and RAW/JPEG separation available
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 mini-B, mini HDMI Type C, 3.5 mm microphone and headphone sockets, remote, DC input and flash sync terminal; Multi Interface Shoe
Wireless connectionsWi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz and Bluetooth 5.0.SLT-A99V incorporates GPS geotagging; Japanese specification and photograph represent this regional model
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 410 photographs with the viewfinder or 500 with the LCD; optional VG-C99AM grip holds two additional batteries
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 147 × 111.2 × 78.4 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 733 g body only; 812 g including battery and Memory Stick PRO Duo
Materials–Magnesium-alloy body with dust and moisture resistance measures; complete resistance is not guaranteed
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, USB cable, ADP-MAA shoe adapter, accessory shoe cap, shoulder strap, body cap, eyepiece cup and software CD

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