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Sony Alpha 9 III vs Sony Alpha DSLR-A450

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

Better figure, where one is clearly better

SonyAlpha 9 IIISonyAlpha DSLR-A450
Overview
ReleasedJanuary 2024February 2010
Image and sensor
Camera typeMirrorlessDSLR
Sensor formatFull frameAPS-C
Sensor typeStacked Exmor RS CMOS with global shutterExmor CMOS
Sensor dimensions35.6 × 23.8 mm23.4 × 15.6 mm
Effective resolution24.6 MP14.2 MP
Largest image6000 × 40004592 × 3056
RAW recordingYesYes
Standard ISO range250–25600200–12800
Sensor detailApproximately 25.2 million total pixels; integral memory and global exposure rather than sequential line exposure.Approximately 14.6 million total pixels; RGB primary-colour filter; anti-static coating and sensor-shift dust reduction
Image formatsJPEG, HEIF and Sony ARW 5.0 RAW.JPEG, RAW and RAW+JPEG; Sony ARW 2.1; sRGB and Adobe RGB
ISO detailStandard ISO 250–25600 for stills and movies; stills expand to ISO 125–51200.–
Image processorBIONZ XR with dedicated AI processing unit.BIONZ
Lens and shooting
Lens mountSony E-mountSony A-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst120 fps7 fps
AutofocusUp 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.TTL phase detection with nine points and central cross sensor; EV 0–18 at ISO 100; single, automatic, continuous AF and manual focus; built-in flash AF illumination
Shutter–Electronically controlled focal-plane shutter; 30 seconds to 1/4000 second and Bulb; flash sync 1/160 second
Burst detailUp 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.Maximum approximately 7 fps in Speed Priority with focus and exposure fixed at the first frame; ordinary continuous shooting approximately 5 fps. Sony specifies up to 32 Fine JPEG, 14 RAW or seven RAW+JPEG frames, depending on card and conditions
Stabilisation detailFive-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; current Sony specifications claim approximately 2.5–4 shutter-speed steps, depending on lens and conditions; DPReview's separate launch specification table gives 2.5–3.5 steps
Flash–Pop-up flash, guide number 12 m at ISO 100; ADI and pre-flash TTL; Sony Alpha accessory shoe
Exposure controls–P/A/S/M and scene modes; 40-segment honeycomb SPC metering; ±2 EV in 0.3 EV steps; DRO and two-exposure Auto HDR, with exposure difference selectable up to 3 EV in 0.5 EV steps
Video
Highest video resolution3840 × 2160 at 120 fps–
Video detailUp 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.No movie recording (PhotographyBlog); HDMI is for still-image playback
Screen and viewfinder
ViewfinderElectronicOptical
Screen size3.2″2.7″
Screen dots2,095,104230,400
TouchscreenYes–
Tilting screenYesNo
Display detailFour-axis LCD tilts and opens sideways; approximately 98° up, 40° down, 180° sideways and 270° rotation.Fixed Clear Photo LCD; dots count colour subpixels. Main-sensor Manual Focus Check Live View offers 7×/14× enlargement; no separate-sensor Quick AF Live View
Viewfinder detail0.64-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.Pentamirror optical viewfinder, approximately 95% coverage and 0.83× magnification with a 50 mm lens at infinity
Connections and design
Wi-FiYes–
BluetoothYes–
Battery life (maker's claim)530 photographs1050 photographs
Body weight617 g520 g
Release detailSony UK announced availability in January 2024; Japan's announcement specifies 26 January. The main date retains UK month precision.Sony's original press release, reproduced in full by DPReview, specifies availability from the beginning of February 2010; month precision retained
Recording mediaBoth slots accept CFexpress Type A or UHS-I/UHS-II SD.Separate Memory Stick PRO Duo/PRO-HG Duo and SD/SDHC card slots
PortsUSB 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 and remote-release terminal
Wireless connectionsWi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz and Bluetooth 5.0.–
Battery life detailNP-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; approximately 1,050 photographs using optical viewfinder under maker CIPA conditions
DimensionsApproximately 136.1 × 96.9 × 82.9 mm (width × height × maximum depth); grip-to-monitor depth 72.8 mm.Approximately 137 × 104 × 81 mm (width × height × depth, excluding protrusions)
Weight detailSony 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 520 g without battery, memory card or accessories (Sony Asia specifications)
In the boxNP-FZ100 battery, BC-QZ1 charger, power cord, cable protector, shoulder strap, body cap, accessory shoe cap and eyepiece cup, according to Sony UK.–

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