Cameras · 2023 · Sony

Sony α9 III (ILCE-9M3)

The α9 III, announced by Sony in November 2023, is the first full-frame camera with a global shutter sensor. Its 24.6MP stacked Exmor RS sensor exposes and reads every pixel at once, so fast motion is not distorted; it offers blackout-free 120 fps bursts, shutter speeds up to 1/80,000 s with flash sync across that whole range, 8 stops of in-body stabilisation and 4K 120p video. Independent testing rated autofocus and burst shooting very highly and measured image quality about a stop behind contemporary full-frame cameras because of the ISO 250 base. Owners praise its speed; noise in dark venues and the price are criticised.

α9 III ILCE-9M3 body; the VG-C5 vertical grip is sold separately. The α9 (ILCE-9) and α9 II (ILCE-9M2) are earlier models with different sensors.

Specifications

SpecificationValue
Sensor35.6 × 23.8 mm full-frame stacked Exmor RS CMOS with global shutter; about 24.6MP effective for stills, 20.3MP for video

A global shutter reads every row at once, so the skew seen on row-by-row sensors with spinning propellers, golf clubs or fast pans does not occur.

Processor and ISOBIONZ XR; ISO 250–25600 for stills (expanded 125–51200)

A base ISO of 250 means the lowest-noise setting is higher than on cameras with an ISO 100 base.

AutofocusFast Hybrid AF; 759 phase-detection points for stills, 627 for video
Burst and shutterAbout 120 fps (Hi+), blackout-free; electronic shutter only, 1/80,000–30 s

Sony says AF/AE tracking continues at 120 fps. Speed Boost switches to a preset higher rate with one button during shooting; Pre-Capture keeps up to 1 second recorded before the shutter is pressed.

Flash syncUp to 1/80,000 s (electronic); 1/500 s

Thanks to the global shutter, flash can be used even at the fastest shutter speed without switching to high-speed sync.

In-body stabilisation5-axis sensor shift; 8.0 stops (CIPA)

The figure is measured with the FE 50mm F1.2 GM on pitch/yaw only.

Viewfinder and screen0.64-type OLED viewfinder, 9,437,184 dots, 0.90x; 3.2-type 2,095,104-dot touchscreen (multi-angle)

The viewfinder refreshes at 60/120/240 fps. The screen tilts up 98°, down 40°, swings 180° to the side and rotates 270°.

VideoUp to 4K 119.88p; XAVC S (8-bit 4:2:0 or 10-bit 4:2:2), XAVC HS (10-bit 4:2:2), XAVC S-I 4K 59.94p (600 Mbps)

XAVC HS is H.265-based, producing smaller files at the same quality but needing a stronger computer to edit. XAVC S-I records intra-frame only, easier to edit but with large files.

Card slotsTwo slots; each takes SD (UHS-I/II) or CFexpress Type A

CFexpress Type A cards are better suited to clearing the buffer quickly when shooting RAW at 120 fps.

BatteryNP-FZ100; about 400 shots with the viewfinder and 530 with the screen (CIPA); charging and power over USB PD
ConnectivityUSB-C 10 Gb/s (USB 3.2); plus Multi/Micro USB; 1000BASE-T wired LAN; Wi-Fi 802.11ac (2.4/5 GHz); Bluetooth 5.0; Type-A HDMI

Wired LAN is used to send photos quickly to agencies at sports and news events. Full-size HDMI gives a sturdier connection in the field than micro HDMI.

Size and weightAbout 136.1 × 96.9 × 82.9 mm; about 702 g with battery and card (body only 617 g)

From the manufacturer

Sony presents the α9 III as the world’s first full-frame camera with a global shutter, offering distortion-free, blackout-free 120 fps bursts, flash sync at all speeds and one-second Pre-Capture for professional sports and news photographers. Sony Asia

Strengths and limitations

  • DPReview explains that the global shutter sensor uses a second photodiode in each pixel as a buffer, which reduces light capacity and raises base ISO to 250; in measurements image quality was up to a stop behind contemporary full-frame cameras, most visibly at high ISO. Because most sports shooting happens above ISO 250, they found the trade-off manageable. Subject tracking was very reliable in team sports, and it shot RAW at 120 fps with AF, though the team noted 20–30 fps is enough for most sports and file volume is large. Flash loses output at the fastest speeds. Video showed no banding or rolling-shutter skew under artificial light; there is no internal Raw, waveform or shutter angle. CIPA battery figures trail rivals and the VG-C5 grip is recommended. The viewfinder drops resolution at high refresh rates.

    DPReview review (Richard Butler and Carey Rose; 8 January 2024, updated 21 May 2024).

    DPReview: Sony a9 III in-depth review

Owner experiences and issues

  • Best Buy has 9 reviews, 8 of them incentivised. A non-incentivised owner sees no warping from the global shutter, says the buffer clears quickly at 120 fps with a CFexpress A card and finds dynamic range not the best but unnoticeable. MorganB reports noise even at ISO 250 in dark concert venues, weaker AF in low light and stabilisation that could be better, and finds it expensive. Peterpaul praises its speed for birding and wildlife, and Fotographer and GeorgeP the new grip and solid build. No battery or overheating reports.

    Best Buy US, Sony Alpha 9 III (SKU 6567080); 9 reviews, 8 incentivised.

    Best Buy: Sony Alpha 9 III customer reviews

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Sources

  1. Sony Asia: ILCE-9M3 specifications
  2. Sony Electronics press release: Alpha 9 III, the world’s first full-frame camera with a global shutter system
  3. DPReview: Sony a9 III in-depth review
  4. Best Buy: Sony Alpha 9 III customer reviews