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Olympus OM-D E-M10 Mark IV vs Olympus PEN E-P7

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

Better figure, where one is clearly better

OlympusOM-D E-M10 Mark IVOlympusPEN E-P7
Overview
ReleasedAugust 2020June 2021
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFour ThirdsFour Thirds
Sensor typeLive MOSLive MOS
Sensor dimensions17.3 × 13 mm17.3 × 13 mm
Effective resolution20.3 MP20.3 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 21.8 total megapixels; UK image area 17.3×13 mm, while Japan specifies 17.4×13 mm
Image formatsJPEG, 12-bit losslessly compressed ORF RAW and simultaneous RAW+JPEG; 5184×3888 maximum ordinary still sizeJPEG, 12-bit losslessly compressed ORF RAW and simultaneous RAW+JPEG; maximum ordinary still size 5184×3888
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 with expanded LOW approximately ISO 100; Auto normally LOW–6400
Image processorTruePic VIIITruePic VIII
Lens and shooting
Lens mountMicro Four ThirdsMicro Four Thirds
StabilisationSensor shiftSensor shift
Maximum continuous burst15 fps15 fps
Autofocus121-point contrast detection; single, nine-point group or all-area selection; face and near-eye detection, tracking, manual focus and focus peaking121-point contrast detection with single, nine-point group or all-area selection; face and near-eye detection, continuous tracking and manual-focus peaking
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 1/16000–60 seconds; electronic first curtain 1/320–60 seconds, switching to mechanical first curtain at faster speeds; Bulb, Live Time and Live Composite
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 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 card
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, 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 alone
FlashBuilt-in flash, guide number 7.2 at ISO 200; hot shoe; mechanical flash synchronisation up to 1/250 secondBuilt-in flash, guide number 7.6 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 modeP/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 profiles
Video
Highest video resolution3840 × 2160 at 30 fps3840 × 2160 at 30 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 minutesMOV 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 minutes
AudioBuilt-in stereo microphone, 16-bit 48 kHz linear PCM, recording-level and wind-noise controls; no microphone or headphone socket, confirmed by both reviewsBuilt-in stereo microphone, 16-bit 48 kHz linear PCM, recording-level and wind-noise controls; no microphone or headphone socket, confirmed by Photography Blog
Screen and viewfinder
ViewfinderElectronicNone
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 bodyTilts approximately 80° up and 180° down for forward-facing selfie mode beneath the body
Viewfinder detailApproximately 2.36 million dots, 100% coverage and maximum 1.23× magnification with 50 mm lens at infinity, −1 dioptre–
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)360 photographs360 photographs
Body weight335 g289 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 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 release
Recording mediaOne SD slot; SDHC and SDXC with UHS-I/UHS-II supportOne SD slot; SDHC and SDXC with UHS-I/UHS-II support
PortsUSB 2.0 Micro-B, micro-HDMI Type D and hot shoe; no wired remote-release socketUSB 2.0 Micro-B, micro-HDMI Type D and hot shoe; no wired remote-release socket
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 IEEE 802.11b/g/n and Bluetooth 4.2 Low Energy; smartphone transfer, remote shooting and smartphone GPS tagging through OI.Share
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 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 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 camera switched off; F-5AC USB adapter supplied; external battery charger optional
Dimensions121.7×84.6×49 mm, excluding protrusions118.3×68.5×38.1 mm, excluding protrusions
Weight detailApproximately 335 g body only; 383 g with supplied battery and memory card, without eyecupApproximately 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 table
MaterialsEngineering-plastic body; no weather sealing, reported by Photography BlogPredominantly plastic body with metal control dials, reported by Amateur Photographer; Photography Blog reports no weather sealing
ColoursBlack or silverSilver with black covering or silver with white covering
In the boxBody, BLS-50 battery, USB cable, shoulder strap, USB adapter and documentation; regional plug variants applyBody, BLS-50 battery, USB cable, shoulder strap, F-5AC USB adapter and documentation; regional plug variants apply

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