OM SYSTEM OM-3 ASTRO vs OM SYSTEM OM-5

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OM-3 ASTRO compared with OM-5

	OM SYSTEMOM-3 ASTRO	OM SYSTEMOM-5
Overview
Released
Released	February 2026	November 2022
Image and sensor
Camera type
Camera type	Mirrorless	Mirrorless
Sensor format
Sensor format	Four Thirds	Four Thirds
Sensor type
Sensor type	Stacked BSI Live MOS	Live MOS
Sensor dimensions
Sensor dimensions	17.3 × 13 mm	17.4 × 13 mm
Effective resolution
Effective resolution	20.4 MP	20.4 MP
Largest image
Largest image	5184 × 3888	5184 × 3888
RAW recording
RAW recording	Yes	Yes
Standard ISO range
Standard ISO range	–	200–25600
Sensor detail
Sensor detail	Approximately 20.37 effective megapixels (maker Japan), rounded to 20.4 in UK table; 22.9 total megapixels. Modified infrared-cut filter transmits approximately 100% at Hα 656 nm and SII 672 nm (maker Japan illustration, not a guaranteed spectral curve)	Approximately 20.37 effective and 21.77 total megapixels in maker Japan table; UK rounds to 20.4 and 21.8. Japan image area 17.4×13 mm; UK gives 17.3×13 mm
Image formats
Image formats	Ordinary JPEG and 12-bit RAW at 5184×3888; composite output up to 50 MP handheld or 80 MP tripod, with 12/14-bit high-resolution RAW. Composite resolution is not native sensor resolution	JPEG and 12-bit losslessly compressed ORF RAW; ordinary output 5184×3888. Handheld composite 50 MP JPEG/RAW; tripod composite 50 MP JPEG or 80 MP RAW developed with OM Workspace, not a single-shot 80 MP sensor
ISO detail
ISO detail	Maker UK manual and Auto range extends from LOW approximately ISO 80 to 102400, Auto upper default 25600; maker Japan lists standard maximum 25600	Manual ISO 200–25600, expanded LOW approximately 64 and 100; default Auto upper limit 6400 (maker Japan). Amateur Photographer calls values above 6400 extended, unlike the maker manual table
Image processor
Image processor	TruePic X	TruePic IX
Lens and shooting
Lens mount
Lens mount	Micro Four Thirds	Micro Four Thirds
Stabilisation
Stabilisation	Lens and sensor shift	Lens and sensor shift
Maximum continuous burst
Maximum continuous burst	120 fps	30 fps
Autofocus
Autofocus	1053 cross-type phase detection positions and 1053 contrast positions; Starry Sky AF plus human, bird, animal and vehicle recognition	Sensor phase/contrast detection, 121 cross-type phase positions; face/eye detection and Starry Sky AF. No animal/vehicle recognition (Amateur Photographer)
Shutter
Shutter	Mechanical 1/8000–60 seconds; electronic 1/32000–60 seconds; Bulb up to 30 minutes and Live Composite	Mechanical 1/8000–60 seconds; electronic 1/32000–60 seconds; Bulb up to 30 minutes and Live Composite modes
Burst detail
Burst detail	Mechanical approximately 6 fps; electronic approximately 20 fps, SH1 up to 120 fps with focus/exposure fixed at first frame, SH2 up to 50 fps with compatible lenses. Maker examples at 120 fps 88 RAW/90 JPEG, at 50 fps 102 RAW/125 JPEG, with specified KIOXIA card and 12–40mm F2.8 PRO II	Electronic high approximately 30 fps and low 10 fps; mechanical high 10 fps and low 6 fps. Maker example buffers 18 RAW/20 JPEG at 30 fps, 149 RAW at mechanical 10 fps, with specified KIOXIA card and 12–40mm F2.8 PRO
Stabilisation detail
Stabilisation detail	Five-axis sensor shift rated up to 6.5 central/5.5 corner stops with 12–45mm F4 PRO at 45mm; Sync IS up to 7.5 central/6.5 corner with 12–100mm F4 IS PRO at 100mm and half-press stabilisation off	Five-axis sensor shift; CIPA up to 6.5 stops with 12–40mm F2.8 PRO at 40mm; Sync IS up to 7.5 with 12–100mm F4 IS PRO at 100mm and half-press stabilisation off
Exposure controls
Exposure controls	C1/C2 astrophotography presets, C3 handheld night scenes; 12-shot astrophotography stacking and star-motion alignment. Generic high-resolution table also describes an eight-shot mode. Live ND up to ND64, Live GND, HDR, focus stacking and Live Composite	PASM, Live ND, HDR, focus stacking and multiple exposure; Live ND2–16 (Amateur Photographer), with mode, shutter, ISO and lens restrictions
Video
Highest video resolution
Highest video resolution	4096 × 2160 at 60 fps	4096 × 2160 at 24 fps
Video detail
Video detail	Internal C4K 4096×2160 or UHD 3840×2160 up to 60p; H.264 or HEVC/H.265 MOV. H.264 table specifies 8-bit 4:2:0; OM-Log400, HLG and OM-Cinema1/2 profiles. Separate FHD high-speed up to 240 fps; HDMI 12-bit RAW is external output, not internal recording	Internal H.264 MOV C4K 4096×2160 at 24p approximately 237 Mbps; UHD 3840×2160 at 30/25/24p approximately 102 Mbps. Separate FHD high-speed 120 fps; Flat and OM-Log400 profiles. No fixed clip-duration limit, with card, battery and file-splitting restrictions
Audio
Audio	Stereo microphones; 3.5 mm external microphone and headphone sockets; 48 kHz/16-bit or 96 kHz/24-bit PCM	Built-in stereo microphones; 48 kHz/16-bit or 96 kHz/24-bit audio; external 3.5 mm microphone socket
Screen and viewfinder
Viewfinder
Viewfinder	Electronic	Electronic
Screen size
Screen size	3″	3″
Screen dots
Screen dots	1,620,000	1,037,000
Touchscreen
Touchscreen	Yes	Yes
Tilting screen
Tilting screen	Yes	Yes
Display detail
Display detail	Fully articulated 3-inch approximately 1.62-million-dot touchscreen	Fully articulated touchscreen; UK 1.037 million dots, Japan rounds to 1.04 million
Viewfinder detail
Viewfinder detail	OLED approximately 2.36 million dots, approximately 100% coverage; maximum 1.37× magnification with 50mm lens at infinity at −1 dioptre, depending on finder style	OLED approximately 2.36 million dots, approximately 100% coverage; 1.23–1.37× magnification with 50mm lens at infinity at −1 dioptre depends on finder style
Connections and design
Wi-Fi
Wi-Fi	Yes	Yes
Bluetooth
Bluetooth	Yes	Yes
Battery life (maker's claim)
Battery life (maker's claim)	590 photographs	310 photographs
Body weight
Body weight	413 g	366 g (better)
Release detail
Release detail	Japan on sale 27 February 2026, made to order; month precision retained because the exact first sale in other regions is unconfirmed	Japan body and 14–150mm II kit on sale 18 November 2022, 12–45mm PRO kit 10 December. Earlier worldwide day unconfirmed, so month precision retained
Recording media
Recording media	One SD/SDHC/SDXC slot; UHS-I and UHS-II	One SD/SDHC/SDXC slot, UHS-I and UHS-II
Ports
Ports	USB 3 Type-C, micro-HDMI Type D, 3.5 mm microphone/headphone sockets, hot shoe and flash sync socket; no wired remote-release input (Amateur Photographer)	USB 2.0 Hi-Speed Micro-B; micro-HDMI Type D; 3.5 mm microphone and 2.5 mm remote sockets; hot shoe
Wireless connections
Wireless connections	Bluetooth Low Energy 5.2 and Wi-Fi; location tagging from smartphone GPS; RM-WR2 Bluetooth remote, RM-WR1 unsupported	Wi-Fi b/g/n and Bluetooth Low Energy 4.2; location tagging from connected smartphone rather than built-in GPS
Battery life detail
Battery life detail	BLX-1; approximately 590 standard or 1040 Quick Sleep shots with specified KIOXIA card; approximately 120 minutes CIPA video or 190 minutes with zoom and other operations disabled	BLS-50; standard 310 or low-power 660 CIPA shots with specified KIOXIA card, stabilisation on and no flash. Approximately 60 minutes JEITA video or 110 minutes with other operations disabled
Charging
Charging	In-camera USB charging and USB PD bus power; can operate while charging, subject to supply capability	USB in-camera charging with camera off; behaviour depends on supply capability
Dimensions
Dimensions	Approximately 139.3×88.9×45.8 mm excluding protrusions	Approximately 125.3×85.2×49.7 mm excluding protrusions
Weight detail
Weight detail	Approximately 413 g body only or 496 g with battery and card; maker Japan loaded figure excludes eyecup	366 g body only or 414 g with battery and card, excluding eyecup; photographed kit lens excluded
Materials
Materials	IP53 or IPX1 depending on attached lens; operating temperature −10 to 40°C. Not an immersion rating	IP53 when paired with an IP53 lens, IPX1 with an IPX1 lens; not an immersion rating. Operating temperature −10 to 40°C
Colours
Colours	Silver and black body with red ASTRO badge	Black and silver