Panasonic LUMIX S1II / Sony α1 II (ILCE-1M2)

Panasonic LUMIX S1II: DC-S1M2 · black, body only

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.

SpecificationPanasonic LUMIX S1IISony α1 II (ILCE-1M2)
Release year20252024
Release year2025 Panasonic—
Sensor35.6 × 23.8 mm full-frame CMOS; 24.1 MP effective, 26.8 MP total Panasonic35 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
Lens mountLeica L-Mount Panasonic—
Still image size3:2, up to 6000 × 4000 Panasonic—
High-resolution mode3:2, up to 12000 × 8000; multi-shot mode Panasonic—
FilesJPEG, HEIF, RAW; MP4 and MOV video options Panasonic—
Card slots1 × CFexpress Type B; 1 × UHS-II SD/SDHC/SDXC Panasonic2 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
Open Gate video5952 × 3968, 3:2, 29.97p; 4:2:0 10-bit HEVC option Panasonic—
6K high frame rate5952 × 2512, 2.4:1, 59.94p; 4:2:0 10-bit HEVC option Panasonic—
Stabilization5-axis sensor shift; Dual I.S.2 compatibility Panasonic—
AutofocusImage-plane phase detection + contrast detection Panasonic759-point phase-detection hybrid AF covering about 92% of the sensor; human, animal, bird, insect, car, train and airplane recognition Sony
Viewfinder0.5-inch OLED, 5.76 million dots; approximately 0.78× Panasonic—
Monitor3-inch, 3:2 touchscreen; 1.84 million dots Panasonic—
USBUSB-C, 10 Gbit/s; USB PD 9 V / 3 A Panasonic—
HDMIFull-size Type A; RAW video output Panasonic—
AudioSeparate 3.5 mm microphone and headphone; 2.5 mm remote Panasonic—
External recordingExternal SSD recording support Panasonic—
Dimensions134.3 × 102.3 × 91.8 mm; excluding protrusions Panasonic—
Weight800 g with battery and one SD card; 718 g body only Panasonic—
WirelessWi-Fi 802.11a/b/g/n/ac; Bluetooth 5.0 LE Panasonic—
Operating range−10–40 °C; splash resistant, not for submersion Panasonic—
Processor—BIONZ XR and a dedicated AI processing unit Sony
Continuous shooting—30 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
In-body stabilisation—5-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 screen—0.64-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 speeds—Electronic 1/32000–30 s; mechanical 1/8000–30 s; Bulb Sony
ISO—Stills 100–32000 (expandable 50–102400); movies 100–32000 Sony
Video—8K (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
Connections—USB-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
Battery—NP-FZ100; approx. 420 shots with EVF, 520 with LCD (CIPA) Sony
Size and weight—136.1 × 96.9 × 82.9 mm; approx. 743 g with battery and card (body only 658 g) Sony