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OM System OM-1

The OM-1 from OM System, the name of the camera division spun off from Olympus, ushers in a new era for the Japanese company. Significantly less expensive than the previous top model E-M1X, the OM-1 is a refreshing new beginning in many areas. The brand new TruePic X image processor is combined with an improved 20-megapixel MFT sensor.

The image sensor now has a backside-illuminated structure (BSI CMOS), which is used in the OM-1 for an extended light sensitivity of ISO-102,400. Previously, Olympus' MFT cameras stopped at ISO-25,600. There are also 1,053 instead of 121 phase AF sensors on the image sensor. Again, a High-Resolution-Shot with up to 80 megapixels and an internal image stabilization with up to 8 EV compensation are part of the sensor package.

The TruePic X processor is said to have about three times the processing power of the previous generation and uses this, among other things, for improved autofocus. In addition to the nearly nine-fold increase in the number of phase AF sensors, the OM-1 can now also perform auto-exposure and autofocus tracking at up to 50 fps during continuous shooting. Without AF tracking, even 120 fps are possible - in full resolution and RAW format.

Which memory cards for the OM-1?

The internal buffer memory already holding 90 images with maximum quality (RAW) and is accompanied by an improved SD memory card controller with UHS-II support. The latter achieves about 210 MB/s with the fastest SD memory cards, which is enough for about 10-12 RAW pictures per second. Apart from the possible 120 fps, a few seconds are thus always feasible at maximum continuous shooting speed. But even mid-range SD cards with UHS-I interface now perform much better than in Olympus' days.

Thanks to the rather low resolution of only 20 megapixels, there is room for about 3,000 (RAW) pictures even on a 64 GB SD card. The OM System OM-1 is also surprisingly frugal in video recordings for a 2022's professional camera - and that despite up to 60 frames/s in 4K resolution. A maximum of 202 Mbit/s is written, consequently models with U3/V30 classification are absoluteley fine. Corresponding memory cards are marked with a symbol in the table.


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