Sensor typeFour Thirds (17.4 x 13 mm) Stacked CMOS
Specs
Release year
2025
Megapixels
20 MP effective
Sensor
Four Thirds (17.4 x 13 mm) Stacked CMOS
Lens
Micro Four Thirds mount (interchangeable lenses)
Memory card
UHS-II SD
Max memory
Up to 2TB (SDXC UHS-II)
Battery
Olympus BLX-1 rechargeable Li-ion battery
Size
139 × 89 × 46 mm
Weight
Approx. 496 g (with battery and card, CIPA)
Olympus OM System OM-3 FAQ
What battery does the Olympus OM System OM-3 use?
Olympus OM System OM-3 uses Olympus BLX-1 rechargeable Li-ion battery. When buying used, confirm the seller includes a working charger or plan to add one. See the battery guide for charger and spare-battery checks.
What memory card does the Olympus OM System OM-3 take?
Olympus OM System OM-3 uses UHS-II SD. The current buyer-facing maximum is Up to 2TB (SDXC UHS-II); for older or unusual formats, stay within that limit and avoid oversized cards. See the memory card guide before buying cards for older cameras.
Is the Olympus OM System OM-3 worth buying used?
It can be worth buying if you want a 20 MP effective Olympus compact from 2025 with Four Thirds (17.4 x 13 mm) Stacked CMOS. Check power, lens movement, screen condition, and storage access before paying. Run the used digital camera checklist before buying. For nearby Olympus options, compare Olympus OM System OM-1 Mark II and Olympus OM System OM-5.
How do you transfer photos from the Olympus OM System OM-3?
The simplest transfer path is usually to remove the memory card and use a compatible card reader. If the camera uses internal storage or a rare card format, confirm the cable or reader before buying. The card reader guide and photo transfer guide cover the common options.
Olympus OM System OM-3 is worth judging as its own Olympus pocket compact body, not just as a generic old compact. Start with condition, the exact battery/card setup, and whether its look fits what you want to shoot.
What owners like
Olympus OM System OM-3 works best when you want small-bag snapshots, flash photos, mirror selfies, and a clean pocket-camera look rather than a technically perfect modern camera; its Four Thirds (17.4 x 13 mm) Stacked CMOS and interchangeable lens mount are the main character of the look.
Common complaints
Check the lens movement, flash, screen, buttons, and card door calmly before relying on it; older compact bodies can need a little patience without being a bad buy.
What to compare
Compare it with Olympus OM System OM-5 II, Olympus OM System OM-1 Mark II, Olympus Stylus SH-3, Olympus Air A01 to decide whether you want this exact body, a cheaper nearby compact, or a slightly more capable alternative.
