Sony α1 II (ILCE-1M2) / Sony α7 IV (ILCE-7M4)

Sony α1 II (ILCE-1M2): ILCE-1M2 body only, black. The original α1 (ILCE-1), α9 III and α7R V are separate models with different sensors and features.

Sony α7 IV (ILCE-7M4): ILCE-7M4 body (body only) and ILCE-7M4K / 7M4M kits (with the FE 28-70 mm lens). The α7 III and α7 V are separate models.

SpecificationSony α1 II (ILCE-1M2)Sony α7 IV (ILCE-7M4)
Release year20242021
Sensor35 mm full-frame (35.9 × 24.0 mm) Exmor RS stacked CMOS; approx. 50.1 MP effective

The stacked design allows very fast sensor readout, reducing rolling-shutter distortion with the electronic shutter and enabling blackout-free shooting.

Sony		35 mm full-frame (35.9 × 23.9 mm) back-illuminated Exmor R CMOS; about 33.0 MP effective (34.1 MP total)

Back illumination moves the wiring behind the light-sensitive layer, helping reduce noise in low light.

Sony
ProcessorBIONZ XR and a dedicated AI processing unit Sony—
Continuous shooting30 fps with electronic shutter; 10 fps with mechanical shutter; pre-capture

Pre-capture also records frames from just before the shutter is fully pressed, helping catch unpredictable moments such as birds or sport.

Sony		—
Autofocus759-point phase-detection hybrid AF covering about 92% of the sensor; human, animal, bird, insect, car, train and airplane recognition SonyFast Hybrid AF; 759 phase-detection points (full frame); EV -4 to 20; human, animal and bird eye detection (stills and movies)

Phase-detection points track the subject quickly; eye detection locks focus on the eye of moving people and animals.

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In-body stabilisation5-axis; 8.5 stops at centre, 7.0 at periphery (CIPA 2024, with FE 50 mm F1.2 GM)

The stop figure applies to the stated lens and test condition; the effect differs with other lenses.

Sony		—
Viewfinder and screen0.64-inch Quad-XGA OLED EVF, 9,437,184 dots, 0.90×, 60/120/240 fps; 3.2-inch 2,095,104-dot touch screen with four-axis articulation

The screen tilts 98° up and 40° down, swings 180° sideways and rotates 270°, suiting both high/low-angle stills and video.

Sony		—
Shutter speedsElectronic 1/32000–30 s; mechanical 1/8000–30 s; Bulb Sony—
ISOStills 100–32000 (expandable 50–102400); movies 100–32000 SonyStills ISO 100–51200 (expanded 50–204800); movies ISO 100–51200 (expanded up to 102400) Sony
Video8K (7680 × 4320) 30p/25p/24p XAVC HS; 4K up to 120p; Full HD 120p and 240 fps slow motion; 10-bit 4:2:2

XAVC HS uses H.265/HEVC and XAVC S H.264; 10-bit 4:2:2 leaves more room for colour grading.

Sony		Up to 4K 60p/50p in 10-bit 4:2:2; XAVC HS (H.265) up to 200 Mbps, XAVC S (H.264) up to 200 Mbps, XAVC S-I up to 600 Mbps

XAVC S-I compresses each frame individually; it is easy to edit but takes much more space. 10-bit 4:2:2 reduces banding when grading.

Sony
Card slots2 slots; each accepts CFexpress Type A or SD (UHS-I/UHS-II)

CFexpress Type A offers much higher write speeds than SD for 8K and long bursts.

Sony		Slot 1: CFexpress Type A or SD; Slot 2: SD; both slots accept UHS-I and UHS-II SD

Fast cards are needed for high-bitrate S&Q and S-I recording.

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ConnectionsUSB-C (10 Gbit/s, USB 3.2); 2.5GBASE-T wired LAN; Wi-Fi 5 GHz/2.4 GHz (802.11ac); Bluetooth 5.0; full-size HDMI (Type-A)

Wired 2.5 GbE is aimed at sports and news photographers sending files quickly from the field.

Sony		USB Type-C (charging/power with USB Power Delivery), Multi/Micro USB, 3.5 mm mic and headphone, Multi Interface Shoe with digital audio interface

USB PD lets the camera run from a power bank or adapter during long shoots.

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BatteryNP-FZ100; approx. 420 shots with EVF, 520 with LCD (CIPA) SonyNP-FZ100 rechargeable battery Sony
Size and weight136.1 × 96.9 × 82.9 mm; approx. 743 g with battery and card (body only 658 g) Sony131.3 × 96.4 × 79.8 mm; about 658 g with battery and card Sony
Image stabilisation—5-axis sensor shift; 5.5 stops (CIPA)

The figure is measured with the Planar T* FE 50 mm F1.4 ZA for pitch/yaw only; it varies by lens and conditions.

Sony
Shutter and burst—Mechanical/electronic 1/8000–30 s, Bulb; flash sync 1/250 s; Hi+ 10, Hi 8, Mid 6, Lo 3 fps Sony
Viewfinder—0.5-inch OLED, 3.69 million dots; 100% coverage, about 0.78× magnification; 60/120 fps

The 120 fps finder setting shows a smoother view when following moving subjects.

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Monitor—3.0-inch TFT touchscreen, 1.04 million dots; vari-angle (about 176° opening, 270° rotation) Sony
Wireless—Wi-Fi 802.11a/b/g/n/ac (2.4 and 5 GHz); Bluetooth 4.1 Sony
Dust protection—Charge protection coating on the optical filter and sensor-shift mechanism

The coating aims to reduce dust sticking to the sensor; Sony gives no moisture-resistance rating on this page.

Sony