OM System OM-1 Mark II Mirrorless Camera vs OM System OM-D E-M10 Mark IV (2026)

✍️ By the 247Verdict Editorial Team📅 Updated 05 October 2026

Which is better? We compared both on score, owner ratings, pros and cons.

OM System OM-1 Mark II Mirrorless Camera

9.2/10 Excellent

4.7★ (1,800 owners)

20MP M4/3, 120fps burst, AI Subject Detection, weather-sealed IP53, handheld hi-res. Wildlife specialist.

Full Review

OM System OM-D E-M10 Mark IV

8.9/10 Great

4.5★ (2,800 owners)

20MP Micro 4/3, 5-axis IBIS, 4K video, flip screen, compact. Best travel mirrorless under £700.

Full Review

At a Glance

	OM System OM-1 Mark II Mirrorless Camera	OM System OM-D E-M10 Mark IV
247Verdict Score	9.2/10	8.9/10
Owner Rating	4.7★ (1,800)	4.5★ (2,800)
Verdict	Excellent	Great

Quick Verdict

Both are strong choices, but the OM System OM-1 Mark II Mirrorless Camera edges ahead with a 9.2/10 vs 8.9/10. 20MP M4/3, 120fps burst, AI Subject Detection, weather-sealed IP53, handheld hi-res. Wildlife specialist. That said, the OM System OM-D E-M10 Mark IV is worth considering if 20MP Micro 4/3, 5-axis IBIS, 4K video, flip screen, compact. Best travel mirrorless under £700. Check the current price on Amazon →

Pros & Cons Side by Side

OM System OM-1 Mark II Mirrorless Camera

120fps burst with blackout-free shooting — the fastest burst rate of any reviewed mirrorless
AI Subject Detection tracks birds and aircraft with reliability that full-frame alternatives struggle to match
Handheld High Res Shot produces 80MP images from a 20MP sensor using IBIS movement
IP53 weather sealing withstands heavy rain and dust — the most rugged mirrorless reviewed
Micro 4/3 telephoto reach: 300mm f/4 lens is equivalent to 600mm on full-frame — affordable wildlife reach

20MP M4/3 sensor — lower resolution and weaker low-light than full-frame alternatives
M4/3 system requires smaller lenses which limits the very largest apertures

OM System OM-D E-M10 Mark IV

5-axis in-body stabilisation at this price is exceptional — Olympus IBIS engineering heritage
Most compact interchangeable lens camera with IBIS available
Micro 4/3 system: smaller lenses enable genuinely pocketable total kit weight
4K video with 5-axis stabilisation for smooth handheld footage
Extensive Micro 4/3 lens ecosystem from OM System, Panasonic and Sigma

Micro 4/3 sensor smaller than APS-C — lower light performance than Sony or Fujifilm at equivalent ISO
Smaller sensor limits shallow depth of field for portrait work
OM System brand less recognised than Canon or Sony for those coming from phones

FAQ

Which is better, OM System OM-1 Mark II or OM System OM-D E-M10 Mark IV?

Is the OM System OM-1 Mark II worth the extra cost?

Yes — OM System OM-1 Mark II Mirrorless Camera scores higher at 9.2/10 vs 8.9/10.

Who is the OM System OM-1 Mark II best suited to?

20MP M4/3, 120fps burst, AI Subject Detection, weather-sealed IP53, handheld hi-res. Wildlife specialist.

Who is the OM System OM-D E-M10 Mark IV best suited to?

20MP Micro 4/3, 5-axis IBIS, 4K video, flip screen, compact. Best travel mirrorless under £700.

What are the main downsides of each?

OM System OM-1 Mark II Mirrorless Camera: 20MP M4/3 sensor — lower resolution and weaker low-light than full-frame alternatives; M4/3 system requires smaller lenses which limits the very largest apertures. OM System OM-D E-M10 Mark IV: Micro 4/3 sensor smaller than APS-C — lower light performance than Sony or Fujifilm at equivalent ISO; Smaller sensor limits shallow depth of field for portrait work.

Do owner ratings agree with our verdict?

Largely, yes — OM System OM-1 Mark II Mirrorless Camera sits at 4.7★ from 1,800 verified Amazon owners, and OM System OM-D E-M10 Mark IV at 4.5★ from 2,800.

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