Compare OM System OM-5 Mark II vs Sony Alpha 1 II

In this technical comparison between the OM System OM-5 Mark II and the Sony Alpha 1 II, we analyze the key features to help you choose.

Choosing between these two Cameras models often comes down to your budget, with prices around Approx. $1,199 / £1,099 and $6,499.99 USD.

Specifications OM System
OM-5 Mark II
Sony
Alpha 1 II
OM System OM-5 Mark II Sony Alpha 1 II
Launch
Release Version June, 2025 December 2024
Body
Body Dimensions 125.3 x 85.2 x 49.7 mm 136.1× 96.9× 82.9 mm
Weight 366g (Body only) / Approx. 418g (with battery and SD card) 743g (with battery and card) / 658g (Body only)
Mount Micro Four Thirds (MFT) Sony E-mount
Weather Sealing IP53 Certified (Dust, splash, and freeze-proof to -10°C) Yes (Enhanced dust and moisture resistance; inherits a9 III body design)
Sensor
Sensor Technology Live MOS sensor Stacked BSI Exmor RS CMOS with dedicated AI Processing Unit
Size 17.3 x 13.0 mm (Four Thirds) Full-frame (35.9× 24.0 mm)
Image Resolution 20.4 Megapixels (50MP Handheld High-Res / 80MP Tripod High-Res) 50.1 Megapixels
ISO Sensitivity Low (approx. 64) – 25600 100 - 32,000 (Stills expandable to 50–102,400)
Image Stabilization 5-axis in-body image stabilization (IBIS); up to 6.5 stops (7.5 stops with Sync IS lenses) 5-Axis In-Body Image Stabilization (IBIS); 8.5 stops (Center) / 7.0 stops (Periphery)
Display & Viewfinder
Rear screen 3.0-inch Vari-angle Touchscreen LCD (1.04M dots) 3.2-inch 4-axis Multi-angle Touchscreen LCD (2.1M dots)
Viewfinder OLED Electronic Viewfinder (2.36M dots, 1.37x magnification) 0.64-type QXGA OLED EVF (9.44M dots), 0.90x magnification, up to 240 fps refresh rate
Autofocus
AF Points 121 points (All cross-type) 759 points (Phase-detection) covering 92% of the sensor
Autofocus System High-speed Imager AF (Phase detection + Contrast detection) Fast Hybrid AF with AI-based Real-time Recognition
AI Subject Recognition Yes (Face and Eye Priority AF) Humans (improved by 30%), Animals, Birds, Insects, Cars, Trains, and Airplanes
Photo
Continuous shooting 10 fps (Mechanical), up to 30 fps (Electronic/Silent) Up to 30 fps (Electronic Shutter) with full AF/AE tracking; 10 fps (Mechanical)
Formats RAW (12-bit), JPEG RAW (Compressed/Lossless/Uncompressed), JPEG, HEIF (4:2:0 / 4:2:2) --- Pre-Capture (up to 1 sec), Speed Boost, 199MP Pixel Shift Multi Shooting
Video
Video Performance 4K (3840 x 2160) at 30p; C4K (4096 x 2160) at 24p; Full HD up to 120p 8K at up to 30p; 4K at up to 120p (10-bit 4:2:2)
Bit-depth 8-bit (External HDMI 4:2:2 8-bit) 10-bit internal; 16-bit RAW output via HDMI
Audio Connectivity 3.5mm Mic Port / No dedicated Headphone port Yes (3.5 mm for both); supports 4-channel audio via Multi Interface Shoe
HDMI output Micro HDMI (Type D) Full-size HDMI (Type-A)
Storage
Card slots 1 Slot Dual Slots (Both slots are hybrid)
Sensor Technology SD / SDHC / SDXC (UHS-II compatible) CFexpress Type A or SD (UHS-I/UHS-II)
Connectivity
Wi-Fi Yes (built-in) Wi-Fi 5 (802.11ac) 2x2 MIMO
Bluetooth Yes (Low Energy) Bluetooth 5.0
USB / HDMI USB-C (Supports charging and UVC/UAC webcam mode) / Micro HDMI USB-C (USB 3.2 Gen 2, 10Gbps) / Full HDMI / 2.5G Ethernet (RJ45)
Battery
Model BLS-50 Li-ion battery NP-FZ100
Battery Life Approx. 310 shots (Up to 660 in Quick Sleep Mode) Approx. 420 shots (EVF) / 520 shots (LCD)
USB charging Yes, via USB-C Yes (USB-PD Power Delivery supported)
Misc
Inside the box Camera body, BLS-50 Battery, USB-C Cable, Shoulder Strap, Instruction Manual Alpha 1 II Body, NP-FZ100 Battery, BC-ZD1 Dual Battery Charger, USB-C Cable, Shoulder Strap, Two Eyecups (Standard & Deep)
Price Approx. $1,199 / £1,099 $6,499.99 USD
Full Details OM-5 Mark II - Full Specifications Alpha 1 II - Full Specifications