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Olympus OM System OM-1 mirrorless camera


  • the 1st camera released by the new OM System owner who bought the Olympus camera division and decided to name their 1st camera the OM-1 to celebrate the 50th anniversary of the original film SLR OM-1 and to outline the break in company ownership hence it is not named the OM-D E-M1 Mark IV even though it is an evolvd version of the OM-D E-M1 Mark III and includes most of the features of the Olympus OMD E-M1X pro sports camera but with further improvements.
  • announced Feb 2022
  • Improvements over the Olympus OM-D E-M1 Mark III:
    • new stacked 20mp sensor
      • up to 2 stops noise improvement, as well as an extra 1 stop of dynamic range (perhaps tests don't really confirm this but at least the image quality is not far off full frame for ISO 6400 and below)
      • completely new, and first to market ‘Quad Pixel AF’ system, with 1053 cross-type AF points (10x more than the E-M1III) and now covering the entire sensor and AF is sensitive down to -5.5 EV
      • up to 50fps electronic burst with Continuous AF
      • sensor read out ~1/125th sec thus 1 step better rolling compensation, as well as improved panning compensation
    • now it's possible to shoot 10-bit video (at 4:2:2 externally), 4K 60p, and 1080p 240p and there's no 30-minute record limit and no 4Gb file size limit!
    • AI subject tracking now supports planes, trains, motor vehicles, birds, and animals such as cats and dogs, with both subject and face/eye detection, and this is said to be 3x faster than the E-M1X. Tests show that AF for birds is now almost as good as a Sony a1 or Canon R6.
    • many other improvements see below under specs


  • essentially an E-M1III and EM-1X (without the form factor) but with many updates:
    • new 20mp IMX472 stacked backside-illuminated CMOS sensor from Sony and has a sensor readout of 1/125th sec and 1053 quad-pixel PDAF points (previous cameras had 121)
    • 3x more powerful processor TruePic X Dual Quad Core Processor
    • 2 stop improvement low light with “Quad Bayer Structure”
      • Auto ISO can go up to 25,600, whereas Auto ISO stopped at 6400 on prior cameras
      • extend ISO to 102,400, whereas the E-M1X/E-M1 III tops out at ISO 25,600
      • AF focus down to -8 EV (with an F1.2 lens)
    • adds a separate AF-ON button, so the camera includes independent AE-L and AF-ON buttons
    • improved AF tracking
    • 2x more accurate and 3x faster AI detection AF than E-M1X and which now detects Formula cars, rally cars, motorcycles / Aircrafts, helicopters / Bullet trains, standard trains, steam locomotives / Birds / Dogs, cats
    • astro tracking?
    • 7EV IBIS (8EV with dual sync OIS lenses)
    • 5.76Mdot EVF with zero blackout capability at up to 120fps burst
    • higher res 1.62mdot LCD panel
    • larger grip
    • completely re-worked menu system
    • mechanical shutter life is rated to 400,000 shots
    • ProCapture and sequential burst increased to 120fps but limited to 92 frames (139 RAW at 10fps) but double that of previous E-M1 cameras
    • 50fps burst with AF (with 6 PRO lenses otherwise max with AF is 25fps) and AE, 120fps with locked AF and AE
      • faster even than the Sony A1 and Canon EOS R3 which are limited to 30fps with AF
    • Buffer allows 90 frames using a ProGrade Digital UHS-II SD card with 250 MB/s write speed and then takes 25secs to clear but you can continue to shoot at 50 fps, albeit with a reduced buffer. If you shoot 90 frames and wait a few seconds, you can shoot another burst of 10 photos.
    • HiRes modes 25Mp, 50Mp handheld plus 80mp tripod, these are completed twice as fast as in the EM1III
    • Live ND now has a 6 stop ND mode
    • 4K video to 60p 202Mbps now with either UHD or DCI ratio
    • can shoot for up to 90 minutes on a single battery, before the battery is exhausted and for over 2 hours when using an external power source without overheating concerns
    • can output 4K Raw video: C4K, 60p, 4:4:4, 12-bit external recording using Apple ProRes RAW with Atomos Ninja V support
    • 1080p video now up to 100/120/200/240p
    • can use as a very high quality webcam using Olympus’s free webcam software.
    • two UHS-II SD card slots, up from a single UHS-II SD card slot and a second non-UHS-II card slot in previous cameras.
    • Bluetooth 4.2 LE image view/transfer option in addition to Wifi/QRcode remote control
    • firmware can be updated wirelessly using your smartphone
    • new 17Wh 520 shot BLX-1 Li-ion battery 25% more power (but compatible with BLH-1 battery) and camera has USB-PD charging (9V 3A) as with E-M1 III; No external charger comes with the camera but it can be charged or operated over its USB-C socket;
    • IP53 weather rating
    • 599g w batt/SD card
    • $US2199 / $AU3288


  • can't use the touch screen to change menu options
  • new menu system may cause confusion especially for those with Olympus cameras
  • display can get grainy and briefly lose color whilst focusing in low light
  • AI subject tracking still requires you to specific choose what type of subject you want to track - there is not Auto detect mode
  • AF+Tracking mode still not optimal (this is the mode you must use in video to get to the AI options)
  • as per previous Olympus cameras, Panasonic lens features such as aperture ring and OIS will not work (OIS will work but you can't do Dual Sync IS)

Video demonstrations


photo/omsystemom1.txt · Last modified: 2024/02/02 12:37 by gary1

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