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Olympus OM-D E-M10 Mark IV vs OM SYSTEM OM-5 Mark II

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

OlympusOM-D E-M10 Mark IVOM SYSTEMOM-5 Mark II
Overview
ReleasedAugust 2020July 2025
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFour ThirdsFour Thirds
Sensor typeLive MOSLive MOS
Sensor dimensions17.3 × 13 mm17.4 × 13 mm
Effective resolution20.3 MP20.4 MP
Largest image5184 × 38885184 × 3888
RAW recordingYesYes
Standard ISO range200–25600200–25600
Sensor detailApproximately 21.8 total megapixels; UK image area 17.3×13 mm, while Japan specifies 17.4×13 mmMaker Japan specifies approximately 20.37 effective and 21.77 total megapixels, rounded to 20.4 and 21.8 in UK table. Japan gives 17.4×13 mm image area; UK gives 17.3×13 mm
Image formatsJPEG, 12-bit losslessly compressed ORF RAW and simultaneous RAW+JPEG; 5184×3888 maximum ordinary still sizeJPEG and 12-bit losslessly compressed ORF RAW; ordinary output 5184×3888. Tripod composite RAW 10368×7776 needs OM Workspace for 80 MP development; handheld composite 50 MP, rather than an 80 MP single-shot sensor
ISO detailManual ISO 200–25600, with expanded LOW approximately ISO 100; Auto normally LOW–6400. Amateur Photographer describes a narrower standard range, unlike the maker's manual sensitivity tableManual ISO 200–25600, expanded LOW approximately 64 and 100; default Auto upper limit 6400 (maker Japan)
Image processorTruePic VIIITruePic IX
Lens and shooting
Lens mountMicro Four ThirdsMicro Four Thirds
StabilisationSensor shiftLens and sensor shift
Maximum continuous burst15 fps30 fps
Autofocus121-point contrast detection; single, nine-point group or all-area selection; face and near-eye detection, tracking, manual focus and focus peakingHybrid sensor phase/contrast, 121 cross-type phase positions; face/eye recognition and Starry Sky AF, without animal/vehicle subject recognition (both reviews)
ShutterMechanical 1/4000–60 seconds; electronic 1/16000–60 seconds; electronic first curtain 1/320–60 seconds, switching to mechanical first curtain at faster speeds; Bulb, Live Time and Live CompositeMechanical 1/8000–60 seconds; electronic 1/32000–60 seconds; Bulb and Live Composite modes
Burst detailElectronic high approximately 15 fps with focus fixed at the first frame; electronic low 6.3 fps with continuous autofocus, reported by Amateur Photographer. Mechanical high 8.7 fps and low 5 fps. Maker electronic-high buffer 42 RAW or 49 large-fine JPEG with specified Toshiba UHS-II cardElectronic 30 fps fixes focus/exposure at first frame; approximately 10 fps electronic tracking and 6 fps mechanical. Maker Japan example 30 fps buffer 19 RAW/21 JPEG with specified KIOXIA card and 12–40mm F2.8 PRO II; UK examples differ
Stabilisation detailFive-axis sensor shift, rated up to 4.5 CIPA stops with M.Zuiko Digital ED 14–42mm F3.5–5.6 EZ at 42 mm, yaw/pitch; movie stabilisation can add electronic correction with a field-of-view cropFive-axis sensor shift; maker CIPA 2024 up to 6.5 centre/5.5 corner stops with 12–45mm F4 PRO at 45mm. Sync IS up to 7.5/6.5 with 12–100mm F4 IS PRO at 100mm and half-press IS off
FlashBuilt-in flash, guide number 7.2 at ISO 200; hot shoe; mechanical flash synchronisation up to 1/250 second–
Exposure controlsP/A/S/M, Auto, scene and Advanced Photo modes; live long-exposure previews, multiple exposure and eight-frame focus bracketing in AP modePASM and computational-photography CP button; Live ND2–16, focus stacking, HDR and multiple exposures; mode, ISO, shutter, flash and compatible-lens restrictions apply
Video
Highest video resolution3840 × 2160 at 30 fps4096 × 2160 at 24 fps
Video detailMOV H.264; 4K 30/25/24p approximately 102 Mbps, Full HD up to 60p and 720p high-speed recording at 120 fps; maximum clip approximately 29 minutesInternal C4K 4096×2160 at 24p; UHD 3840×2160 at 30/25/24p; H.264 MOV, 8-bit recording (Amateur Photographer). FHD high-speed 120 fps is separate; OM-Log400 and OM-Cinema1/2 profiles
AudioBuilt-in stereo microphone, 16-bit 48 kHz linear PCM, recording-level and wind-noise controls; no microphone or headphone socket, confirmed by both reviewsInternal stereo microphones, external 3.5 mm microphone input; 48 kHz/16-bit or 96 kHz/24-bit recording
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots1,037,0001,037,000
TouchscreenYesYes
Tilting screenYesYes
Display detailTilts approximately 80° up and 180° down; forward-facing selfie mode beneath the bodyFully articulated touchscreen; UK table 1.037 million dots, Japan rounds to 1.04 million
Viewfinder detailApproximately 2.36 million dots, 100% coverage and maximum 1.23× magnification with 50 mm lens at infinity, −1 dioptreOLED approximately 2.36 million dots, approximately 100% coverage; maximum 1.37× with 50mm lens at infinity at −1 dioptre depends on finder style
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)360 photographs310 photographs
Body weight335 g370 g
Release detailMaker European announcement states mid-August 2020 availability; Japan first sale 18 September and North American shipping 25 September. Month precision retained for the earlier European releaseMaker US release confirms early July 2025 retail; Japan 18 July local date. Earliest worldwide day unconfirmed, so month precision retained
Recording mediaOne SD slot; SDHC and SDXC with UHS-I/UHS-II supportOne SD/SDHC/SDXC slot, UHS-I and UHS-II
PortsUSB 2.0 Micro-B, micro-HDMI Type D and hot shoe; no wired remote-release socketUSB 2.0 Hi-Speed Type-C without USB PD, micro-HDMI Type D, 3.5 mm microphone and 2.5 mm remote socket (maker Japan). UK USB 3 heading does not establish USB 3 transfer speed
Wireless connectionsWi-Fi IEEE 802.11b/g/n and Bluetooth 4.2 Low Energy; smartphone transfer, remote shooting and smartphone GPS tagging through OI.ShareWi-Fi b/g/n and Bluetooth Low Energy 5.2 (maker Japan); UK Bluetooth 4.2 table conflicts. Smartphone location tagging, rather than built-in GPS
Battery life detailBLS-50 rechargeable battery; approximately 360 CIPA photographs with stabilisation on; video 80 minutes under standard JEITA conditions or 140 minutes with repeated maximum-length clips under maker conditionsBLS-50; 310 standard or 640 low-power CIPA shots with specified KIOXIA card. Approximately 60 minutes CIPA video or 100 minutes with other operations disabled; recording limited by card, battery and conditions
ChargingIn-camera USB charging with camera switched off; F-5AC USB adapter supplied in Japan; external BCS-5 charger optionalIn-camera USB charging with power off; USB power supply supported, but no USB Power Delivery. Charger not supplied
Dimensions121.7×84.6×49 mm, excluding protrusionsApproximately 125.3×85.2×52 mm excluding protrusions (maker Japan and US launch); UK table gives conflicting 49.7 mm depth
Weight detailApproximately 335 g body only; 383 g with supplied battery and memory card, without eyecupMaker Japan 370 g body only or 418 g with battery/card and without eyecup; UK body-only table gives conflicting 366 g. Photographed kit lens excluded
MaterialsEngineering-plastic body; no weather sealing, reported by Photography BlogIP53 with specified IP53 lens, IPX1 with IPX1 lens; weather qualification excludes charging and HDMI. Operation −10 to 40°C; not an immersion rating
ColoursBlack or silverBlack, silver and sand beige; kit availability varies by region
In the boxBody, BLS-50 battery, USB cable, shoulder strap, USB adapter and documentation; regional plug variants apply–

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