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Olympus PEN E-P7 vs OM SYSTEM PEN

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

Better figure, where one is clearly better

OlympusPEN E-P7OM SYSTEMPEN
Overview
ReleasedJune 2021Coming late October 2026 (Japan and North America)
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 mmApproximately 20.37 effective and 21.77 total megapixels; 17.4×13 mm in maker Japan table. Ordinary output 5184×3888; not a stacked sensor
Image formatsJPEG, 12-bit losslessly compressed ORF RAW and simultaneous RAW+JPEG; maximum ordinary still size 5184×3888JPEG and 12-bit losslessly compressed ORF RAW; handheld composite 50 MP, tripod composite up to 80 MP RAW developed with OM Workspace, not single-shot sensor resolution
ISO detailManual ISO 200–25600 with expanded LOW approximately ISO 100; Auto normally LOW–6400ISO 200–25600 with expanded LOW approximately 64 and 100; default Auto upper limit 6400
Image processorTruePic VIIITruePic IX
Lens and shooting
Lens mountMicro Four ThirdsMicro Four Thirds
StabilisationSensor shiftSensor shift
Maximum continuous burst15 fps30 fps
Autofocus121-point contrast detection with single, nine-point group or all-area selection; face and near-eye detection, continuous tracking and manual-focus peakingSensor phase/contrast detection with 121 cross-type phase positions; human, cat and dog recognition for stills, face/eye detection for video; Starry Sky AF
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 1/4000–60 seconds; electronic 1/32000–60 seconds; Bulb, Live Time and Live Composite modes
Burst detailElectronic high approximately 15 fps with focus fixed at the first frame, reported by Amateur Photographer; electronic low 6.3 fps. Mechanical high 8.7 fps and low 5 fps; continuous autofocus requires the low-speed setting. Maker electronic-high buffer 42 RAW or 49 large-fine JPEG with specified KIOXIA UHS-II cardElectronic high approximately 30 fps with fixed focus/exposure, low approximately 8 fps with tracking; mechanical approximately 5 fps. Maker examples at electronic 30 fps give 20 RAW/20 JPEG frames, tracking 8 fps 23 RAW/48 JPEG, with specified SanDisk card and 12–40mm F2.8 PRO II
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; movie M-IS1 adds electronic correction with a field-of-view crop, M-IS2 uses sensor stabilisation aloneFive-axis sensor shift; CIPA 2024 up to 5.5 stops at centre and 4.5 at edges with 14–42mm F3.5–5.6 III at 42mm
FlashBuilt-in flash, guide number 7.6 at ISO 200; hot shoe; mechanical flash synchronisation up to 1/250 second–
Exposure controlsP/A/S/M and Advanced Photo modes including Live Composite, Live Time, HDR, multiple exposure, digital keystone correction, exposure and focus bracketing; front colour/monochrome switch accesses customisable image profilesPASM, Live ND2–16, focus stacking, HDR and multiple exposure; restrictions depend on shooting mode and lens
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 H.264 MOV C4K 4096×2160 at 24p or UHD 3840×2160 at 30/25/24p; 8-bit recording (both reviews). OM-Log400 and OM-Cinema1/2 profiles; separate FHD S&Q up to 120 fps, with crop, no sound and no continuous AF (CameraLabs)
AudioBuilt-in stereo microphone, 16-bit 48 kHz linear PCM, recording-level and wind-noise controls; no microphone or headphone socket, confirmed by Photography BlogBuilt-in stereo microphones; external 3.5 mm microphone socket; 48 kHz/16-bit or 96 kHz/24-bit audio
Screen and viewfinder
ViewfinderNoneElectronic
Screen size3″3″
Screen dots1,037,0001,040,000
TouchscreenYesYes
Tilting screenYesYes
Display detailTilts approximately 80° up and 180° down for forward-facing selfie mode beneath the bodyFully articulated 3-inch approximately 1.04-million-dot touchscreen; touchscreen menu operation
Viewfinder detail–OLED approximately 2.36 million dots and 100% coverage; 1.10–1.23× magnification with 50mm lens at infinity, depending on finder style
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)360 photographs410 photographs
Body weight289 g344 g
Release detailMaker European press release, republished in full by Photography Blog, states mid-June 2021 availability; Japan body and 14–42mm EZ kit on sale 25 June. Month precision retained for the earlier European releaseMaker announcement 9 September 2026; Japan and North America scheduled for late October 2026. UK product page has an active preorder state on 2 October; first UK sale date unconfirmed
Recording mediaOne SD slot; SDHC and SDXC with UHS-I/UHS-II supportOne SD/SDHC/SDXC slot; UHS-I
PortsUSB 2.0 Micro-B, micro-HDMI Type D and hot shoe; no wired remote-release socketUSB 2.0 Hi-Speed Type-C, micro-HDMI Type D, 3.5 mm microphone socket and hot shoe; USB-C is not a USB 3 transfer-speed claim
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; smartphone GPS 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 without zoom operations, repeatedly recording maximum-length clips under maker conditionsBLS-7; approximately 410 CIPA shots using EVF or LCD; approximately 80 minutes CIPA video or 130 minutes with zoom and other operations disabled
ChargingIn-camera USB charging with camera switched off; F-5AC USB adapter supplied; external battery charger optionalIn-camera USB charging with camera off; no USB Power Delivery (maker Japan)
Dimensions118.3×68.5×38.1 mm, excluding protrusionsApproximately 125.8×74.5×43.3 mm excluding protrusions (maker Japan)
Weight detailApproximately 289 g body only; 337 g with supplied battery and memory card. Amateur Photographer's introduction labels the loaded weight body-only, unlike the maker table344 g body only or 393 g including battery and card (maker Japan); pictured kit lens excluded. CameraLabs pre-production dimensions and loaded weight differ
MaterialsPredominantly plastic body with metal control dials, reported by Amateur Photographer; Photography Blog reports no weather sealingDust-resistant and IPX1 splash resistance with an OM SYSTEM splashproof lens; not an immersion rating. Operating temperature 0–40°C
ColoursSilver with black covering or silver with white coveringBlack and silver
In the boxBody, BLS-50 battery, USB cable, shoulder strap, F-5AC USB adapter and documentation; regional plug variants apply–

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