Restored Olympus reference

How to Check Olympus & OM System Shutter Count

Many Olympus and OM System cameras keep their usage counters inside an undocumented diagnostic menu. The access method depends on the camera family, and newer bodies may show a mechanical-only counter rather than every photograph taken.

Compatibility and evidence

These procedures are not published in Olympus or OM Digital Solutions instruction manuals. The table separates long-established specialist documentation and direct model tests from provisional owner reports. Firmware or regional menu wording can differ.

Compatibility is based on the long-running Biofos Olympus hidden-code reference, the separate Apotelyt Four Thirds and Micro Four Thirds guides, and the model-specific sources cited below. Reviewed 28 August 2026.

Before opening a diagnostic menu

• Use a well-charged battery and follow only the sequence for your camera family.
• Treat the menu as a service interface, not an ordinary settings screen.
• Read the counters only. Do not clear damage codes, explore test/program modes, or save unfamiliar values.
• Turn the camera off—or close the card door on an older E-System body—to exit.

Do not substitute PLAY + OK. On some older models that combination is associated with deeper test functions rather than the normal information route. The historical article’s key sequence should not be treated as universal.

Older Four Thirds E-System DSLRs

Use this card-door procedure for the E-1 through E-620 models listed in the first three rows of the table. The E-5 is different and uses the later procedure.

1. Install a charged battery, turn the camera on, and open the memory-card door. The camera should display its card-door warning.
2. On the E-1 or E-500, press DISPLAY and OK together. On the later listed E-System bodies, press MENU and OK together.
3. When the camera-designation screen appears, press Up, Down, Left, Right, fully press the shutter button, then Up.
4. Page 1 should appear. Press Right to open Page 2.
5. Read the number beside R.
6. Close the card door or switch the camera off to exit.

E-300 note: Apotelyt groups the E-300 with the DISPLAY + OK bodies, while Biofos names only the E-1 and E-500 for that combination. Try DISPLAY + OK first; if no designation screen appears, exit and consult model-specific documentation rather than experimenting with unrelated combinations.

E-5, PEN, XZ-1 and supported OM-D bodies

1. Start with the camera switched off. Hold MENU while switching it on.
2. When the display lights, release MENU and press MENU once more.
3. Open the Setup menu, shown by a spanner or wrench icon.
4. Select LCD Brightness or Monitor Adjust and enter its adjustment screen.
5. Press INFO, then OK. A screen identifying the camera should appear.
6. Press Up, Down, Left, Right, fully press the shutter button, then Up.
7. When Page 1 appears, press Right for Page 2.
8. Read R or MS, whichever your camera displays, then switch the camera off.

The menu item can be reached with Right on older interfaces and OK on others. If the camera-identification screen does not appear after INFO and OK, stop and recheck the model-specific path.

OM System OM-1 and OM-1 Mark II

Direct OM-1 and OM-1 Mark II tests support the later procedure with a more specific menu path: Wrench → Page 3 → Monitor Adjust → OK. Inside Monitor Adjust, press INFO and then OK; enter the same Up–Down–Left–Right–Shutter–Up sequence and press Right for Page 2. The relevant value is MS. See the illustrated OM-1 procedure and independent OM-1 Mark II procedure.

OM-5 and OM-3 status

The OM-5 is included by current specialist guides, but the reviewed evidence is not as strong as the direct OM-1 tests. Follow the newer-menu method only if the named Monitor Adjust screen and camera-designation screen appear exactly as described.

The OM-3 remains provisional. An owner reported that its Page 2 MS value increased by one after a controlled mechanical exposure, which supports the counter interpretation, but this is community evidence rather than an official procedure. See the documented owner test.

What R, MS and the other counters mean

Mechanical and electronic shutter use

On cameras displaying MS, read the result as mechanical shutter operations, not necessarily total photographs. The OM-1 Mark II has separately documented mechanical and silent electronic shooting modes, and independent testing identifies MS as excluding electronic firings. Silent shooting, Pro Capture, High Resolution Shot, focus stacking, and other computational modes may use the electronic shutter.

A camera used heavily in silent or high-speed electronic modes can therefore have a modest MS value despite substantial overall use. No dependable universal electronic-exposure total has been documented across these cameras, and B must not be used as a substitute.

Why this differs from checking a photo

ShutterActuations reads metadata that exists inside the file selected in your browser. Olympus and OM System usage counters are normally retrieved from internal camera memory through the procedures above, not from a standard EXIF shutter-count field. Editing or exporting an image can remove other MakerNotes as well.

The current checker accepts JPEG/JPG, TIFF, DNG, and browser-readable HEIC/HEIF or AVIF. It does not accept or advertise ORF support. You can still use it to inspect ordinary photo metadata, but it may correctly report that an Olympus shutter count is not present in the file.

How much should you trust the number?

A counter is useful evidence, not a complete service record or a prediction of remaining shutter life. Factory testing can leave a non-zero count, a replaced shutter complicates interpretation, and electronic use may be absent from the mechanical total. Inspect physical condition, controls, sensor, stabilization, card slots, service history, and error behavior alongside the number.

About this restored historical URL

This route first appeared on ShutterActuations in 2011. The modern guide preserves its useful purpose without copying the archived wording or presenting its old button sequence as universal. Compatibility and counter meanings have been rewritten from current specialist references and model-specific tests.