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The Daily Insight

What is the difference between Olympus OM1 and OM2?

Author

Caleb Butler

Updated on April 04, 2026

OM1 is all manual. Light meter takes outlawed mercury battery. OM2 has aperture-priority auto-exposure and manual, takes readily available batteries.

How do I reset my Olympus OM2?

Look at your camera from the front. Bottom right of the lens is a small red triangle. Below that is a button. Hold this button in and turn the shutter speed ring until the *RESET is against the button and release.

What battery does the Olympus OM2 take?

An OM2n takes two SR44 (silver oxide) or two LR44 (alkaline versions, 1.5V instead of the 1.55V of the silver oxide ones) batteries or their equivalents, of which 357’s are one. Other names are 10L14, G13, S76, A76 and so on.

Is the Olympus OM2 a good camera?

The Olympus OM system has a long history of both exceptional and under appreciated machines. To put it in simple terms; the OM-2 is the best vintage camera I’ve shot in the past few months, months that’ve included the Leica M3 and Canon A1 among many others. …

Is Olympus OM2 good?

The Olympus OM-2n is a fantastic 35mm SLR: compact, light, precise, smooth. The Olympus Zuiko lenses are similarly fantastic optically, and are solidly built with great feel in the hand. If you could have only one manual-focus 35mm SLR, the Olympus OM-2n would be an outstanding choice.

How do you unlock Olympus OM-2?

Set the shutter speed dial at B to unlock — you’ll have to press the little unlock button underneath. That will work with both the OM-2 and the OM-2n. Thanks Voxphoto, So thats why my om2n always lock up now!

What is an SR44 battery?

sr44 battery equivalent is a small button shape silver oxide battery with a voltage of 1.5V. These button cell batteries pack a lot of power into a tiny package. They provide maximum power for your wristwatch, calculator, or other small electronics. For use in electronic books, toys, watches and more.

What makes the Olympus OM-2 so special?

One of the ‘iconic’ classics of film photography, popular with both enthusiasts and vintage collectors, is the Olympus OM-2 series cameras. When launched in 1975, the OM-2 was a much-welcome alternative to the OM-1’s manual exposure-only capability.

How to check the battery health of the OM-2N?

The battery check is activated by the Auto Selector Switch located on the top plate of the camera – a three-stage LED light display – Continuous (Full Voltage), Intermittent (Depleted, needs replacement), None (Exhausted, replace). The bodyweight of the OM-2n is 520 grams without batteries.

How long can you shoot with the OM-2N?

With the OM-2 being so capable at perfectly calculating exposures there’s little to worry about in this shooting mode. Even exposures as long as 60 seconds are summarily handled by the OM-2, with the OM-2n being capable of slowing things down even further to a possible 120 seconds.

What is the bodyweight of the OM-2N?

The bodyweight of the OM-2n is 520 grams without batteries. As a system camera body, the OM-2n is also central to a vast array of interchangeable system components that can be shared freely with OM-1 system bodies, as well as other forthcoming bodies, of course.