Compare OM System OM-5 Mark II vs Sony RX1R III

In this technical comparison between the OM System OM-5 Mark II and the Sony RX1R III, 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 5000 USD.

Specifications OM System
OM-5 Mark II
Sony
RX1R III
OM System OM-5 Mark II Sony RX1R III
Launch
Release Version June, 2025 July, 2025
Body
Body Dimensions 125.3 x 85.2 x 49.7 mm 113.3×67.9×87.5 mm (4.5×2.7×3.4")
Weight 366g (Body only) / Approx. 418g (with battery and SD card) 498 g (with battery and media)
Mount Micro Four Thirds (MFT) Fixed Lens (ZEISS Sonnar T* 35mm f/2)
Weather Sealing IP53 Certified (Dust, splash, and freeze-proof to -10°C) No (Magnesium alloy chassis, but not rated)
Sensor
Sensor Technology Live MOS sensor Exmor R BSI-CMOS
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) 61.0 Megapixels
ISO Sensitivity Low (approx. 64) – 25600 100 – 32,000 (Expands 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) Electronic/Digital only (Active Mode for video)
Display & Viewfinder
Rear screen 3.0-inch Vari-angle Touchscreen LCD (1.04M dots) 3.0" Fixed Touchscreen LCD (2.36M dots)
Viewfinder OLED Electronic Viewfinder (2.36M dots, 1.37x magnification) Fixed 0.39" OLED EVF (2.36M dots, 0.7x mag)
Autofocus
AF Points 121 points (All cross-type) 693 Phase-detection points (78% coverage)
Autofocus System High-speed Imager AF (Phase detection + Contrast detection) Fast Hybrid AF with AI Processing Unit
AI Subject Recognition Yes (Face and Eye Priority AF) Real-time Eye AF (Human, Animal, Bird, Insect)
Photo
Continuous shooting 10 fps (Mechanical), up to 30 fps (Electronic/Silent) 5 fps
Formats RAW (12-bit), JPEG JPEG, HEIF, RAW (Compressed/Lossless/Uncompressed)
Video
Video Performance 4K (3840 x 2160) at 30p; C4K (4096 x 2160) at 24p; Full HD up to 120p 4K at 30p / 1080p at 120p
Bit-depth 8-bit (External HDMI 4:2:2 8-bit) 10-bit 4:2:2 (Internal & HDMI)
Audio Connectivity 3.5mm Mic Port / No dedicated Headphone port 3.5mm Mic jack (No dedicated headphone jack)
HDMI output Micro HDMI (Type D) Micro-HDMI (Type-D)
Storage
Card slots 1 Slot Single Slot
Sensor Technology SD / SDHC / SDXC (UHS-II compatible) SD / SDHC / SDXC (UHS-II compatible)
Connectivity
Wi-Fi Yes (built-in) Wi-Fi 5 (802.11ac)
Bluetooth Yes (Low Energy) Bluetooth 4.2
USB / HDMI USB-C (Supports charging and UVC/UAC webcam mode) / Micro HDMI USB-C (3.2 Gen 2) / Micro-HDMI
Battery
Model BLS-50 Li-ion battery NP-FW50 Lithium-Ion
Battery Life Approx. 310 shots (Up to 660 in Quick Sleep Mode) Approx. 270 – 300 shots
USB charging Yes, via USB-C Yes (USB Power Delivery supported)
Misc
Inside the box Camera body, BLS-50 Battery, USB-C Cable, Shoulder Strap, Instruction Manual Camera, Battery, Lens Cap, Strap, USB-C Cable
Price Approx. $1,199 / £1,099 5000 USD
Full Details OM-5 Mark II - Full Specifications RX1R III - Full Specifications