OM SYSTEM OM-3 / Sony α7C II (ILCE-7CM2)

OM SYSTEM OM-3: OM-3 · body only

Sony α7C II (ILCE-7CM2): ILCE-7CM2 body; black or silver. The 28–60 mm kit uses the same body. The α7C R (ILCE-7CR) and the original α7C are separate models.

SpecificationOM SYSTEM OM-3Sony α7C II (ILCE-7CM2)
Release year20252023
Announcement / availability6 February 2025 / late February 2025

Dates from the manufacturer’s North America press release.

OM SYSTEM		—
Sensor4/3-inch stacked BSI Live MOS; approx. 20.4 MP effective, 22.9 MP total OM SYSTEM35 mm full-frame Exmor R CMOS (35.9 × 23.9 mm); about 33.0 MP effective for stills, 27.6 MP for movies

Exmor R is a back-illuminated sensor; with the circuitry behind the light-sensitive layer it gathers more light in dim conditions.

Sony
ProcessorTruePic X OM SYSTEM—
Mount / formatMicro Four Thirds; 35 mm equivalent focal length approx. 2× OM SYSTEM—
Photo size and format5184 × 3888 maximum; 12-bit RAW and JPEG OM SYSTEM—
ISOLOW (approx. 80) – 102400; default auto upper limit 25600 OM SYSTEM—
StabilizationFive-axis sensor shift OM SYSTEM—
Stabilization rating6.5 stops at centre and 5.5 at the corner in the body; 7.5 and 6.5 stops with a compatible Sync IS lens

CIPA 2024. Body figure with 12–45 mm f/4 PRO at 45 mm; Sync IS figure with 12–100 mm f/4 IS PRO at 100 mm, half-press IS off. Not a guarantee for every shot.

OM SYSTEM		—
Autofocus1053-point cross-type on-chip phase detection; subject detection: people, birds, cats, dogs, car and motorcycle racing, aircraft, helicopters, trains OM SYSTEMFast Hybrid AF; 759 phase-detection points for stills, 627 for movies; EV −4–20; human, animal, bird, insect, car, train and aeroplane recognition

Subject recognition finds the chosen type (for example a bird) in the frame and tracks its eye or body; choosing the right subject type in the menu strengthens tracking.

Sony
Viewfinder2.36-million-dot OLED electronic viewfinder; up to 1.37× magnification; 27 mm eye point

Magnification with a 50 mm lens at infinity, −1 dioptre; depends on the selected viewfinder style.

OM SYSTEM		—
Rear display3-inch, 3:2; approx. 1.62 million dots; touch, vari-angle OM SYSTEM—
ShutterFocal plane; 1/8000–60 s; down to 1/32000 s in silent mode; approx. 100,000 shot durability OM SYSTEM—
BurstApprox. 6 fps; with Pro Capture 20 fps, 50 fps with compatible lenses and 120 fps with focus and exposure fixed at the first frame

Slow shutter speeds and flash cannot be used. The compatible-lens list for 50 fps is limited.

OM SYSTEM		—
Pro CapturePro Capture: starts capturing at half-press; a full press saves up to 70 frames from before it

Not available while connected to a smartphone over Wi-Fi.

OM SYSTEM		—
Computational modesHigh Res Shot (10368 × 7776 on a tripod, 8160 × 6120 handheld); Live ND (ND2–ND64) and Live GND; HDR; focus stacking; multiple exposure; CP button OM SYSTEM—
Colour controlCreative dial on the front: COLOR, MONO, ART, CRT; Color and Monochrome Profile Control OM SYSTEM—
Video resolution4K 3840 × 2160 and C4K 4096 × 2160: 60/50/30/25/24p; Full HD 60/50/30/25/24p OM SYSTEM—
Video codecH.264 8-bit and H.265 10-bit; Flat, OM-Log400, HLG, OM-Cinema1 and OM-Cinema2 profiles

With H.265 selected, only OM-Log400 and HLG are available.

OM SYSTEM		—
High-speed videoFull HD at 240, 120 and 100 fps; no sound recorded; slow and quick motion mode

Available rates depend on codec and frame rate.

OM SYSTEM		—
Continuous video recordingAt 4K 30p 10-bit: up to 30 minutes at 40 °C; unlimited at 25 °C

Manufacturer’s own test condition.

OM SYSTEM		—
External recordingHDMI Type D; 4K/C4K 12-bit RAW output to a compatible recorder

In RAW output the camera does not record to the card.

OM SYSTEM		—
AudioBuilt-in stereo microphones; 3.5 mm microphone and headphone jacks; 96 kHz / 24-bit linear PCM OM SYSTEM—
Card slotOne SD slot; SDHC/SDXC, UHS-I and UHS-II

4K/C4K, ALL-Intra and 100 fps or faster recording require a UHS speed class 3 card or better.

OM SYSTEM		Single SD slot, UHS-I/UHS-II compatible

With one slot there is no backup recording to two cards at once. High-bit-rate video needs a fast UHS-II card.

Sony
Ports and wirelessUSB-C (USB 3); HDMI Type D; microphone and headphone; hot shoe; sync socket; Bluetooth Low Energy and Wi-Fi

Wired remote control is not supported.

OM SYSTEM		—
BatteryBLX-1 lithium-ion battery; 7.2 V / 2280 mAh; approx. 500 charge cycles OM SYSTEMNP-FZ100; about 530 shots with the viewfinder, about 560 with the screen (CIPA); about 165 minutes continuous video Sony
Battery lifeApprox. 590 shots in standard mode, approx. 1040 in quick sleep mode; 120 min video (CIPA)

Approximate values measured with a KIOXIA 64 GB UHS-II card.

OM SYSTEM		—
USB charging and powerThe battery charges in the camera over USB-C; USB PD can power the camera externally

Powering needs a USB PD source rated at 27 W or more (9 V 3 A, 15 V 2 A or 15 V 3 A).

OM SYSTEM		—
Dimensions139.3 × 88.9 × 45.8 mm (excluding protrusions) OM SYSTEM—
Weight413 g body only; 496 g with battery and card OM SYSTEM—
DurabilityMagnesium alloy body; IP53 splash and dust resistance; freezeproof to −10 °C

IP53 needs a compatible splash- and dust-proof lens; not applicable while charging or with HDMI connected.

OM SYSTEM		—
Dust reductionSupersonic Wave Filter OM SYSTEM—
SoftwareOM Image Share (OI.Share) app; OM Workspace RAW processing software OM SYSTEM—
Image stabilisation—Sensor-shift 5-axis stabilisation; 7.0 stops (CIPA)

Sony measures 7.0 stops with the FE 50 mm F1.2 GM lens on pitch and yaw only; the benefit can differ with other lenses and axes.

Sony
ISO and shutter—Stills ISO 100–51200 (expandable 50–204800); mechanical shutter 1/4000–30 s, electronic to 1/8000 s; up to 10 fps continuous Sony
Video—4K up to 59.94p, 10-bit 4:2:2 with XAVC HS and XAVC S (up to 200 Mbps); up to 600 Mbps with XAVC S-I

DPReview says 4K 30p is downsampled from a full-width 7K readout, while 4K 60p is recorded in Super 35 (APS-C) mode with a 1.5× crop. 10-bit 4:2:2 reduces banding when grading colour.

Sony
Viewfinder and screen—0.39-inch XGA OLED viewfinder, 2.36 million dots, about 0.70× magnification; 3.0-inch vari-angle touchscreen (1.04 million dots) Sony
Connections—USB-C (5 Gbps, USB 3.2); micro HDMI (Type D); 3.5 mm mic and headphone; Multi Interface Shoe; Wi-Fi 2.4/5 GHz; Bluetooth 4.2

Charging and powering the camera over USB-C with USB Power Delivery are supported.

Sony
Size and weight—About 124.0 × 71.1 × 63.4 mm; about 514 g with battery and card, 429 g body only Sony
Operating temperature—0–40 °C Sony