OM System OM-1 Mark II Mirrorless Camera vs Sony Alpha A7R V Full-Frame Camera (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

Sony Alpha A7R V Full-Frame Camera

9.5/10 Outstanding

4.8★ (1,400 owners)

61MP full-frame, AI autofocus, 8-stop IBIS, 8K video. The high-resolution landscape and studio benchmark.

Full Review

At a Glance

	OM System OM-1 Mark II Mirrorless Camera	Sony Alpha A7R V Full-Frame Camera
247Verdict Score	9.2/10	9.5/10
Owner Rating	4.7★ (1,800)	4.8★ (1,400)
Verdict	Excellent	Outstanding

Quick Verdict

Both are strong choices, but the Sony Alpha A7R V Full-Frame Camera edges ahead with a 9.5/10 vs 9.2/10. 61MP full-frame, AI autofocus, 8-stop IBIS, 8K video. The high-resolution landscape and studio benchmark. That said, the OM System OM-1 Mark II Mirrorless Camera is worth considering if 20MP M4/3, 120fps burst, AI Subject Detection, weather-sealed IP53, handheld hi-res. Wildlife specialist. 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

Sony Alpha A7R V Full-Frame Camera

61MP sensor resolves extraordinary detail for landscape, studio and large prints
AI-based autofocus recognises humans, animals, birds and vehicles with class-leading accuracy
8-stop in-body stabilisation enables sharp handheld shooting in low light
8K video adds serious hybrid capability
Excellent weather-sealed build for demanding outdoor work

61MP files are huge and demand fast cards and storage
Resolution is overkill for casual or social shooting
Premium price

FAQ

Which is better, OM System OM-1 Mark II or Sony Alpha A7R V?

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

The Sony Alpha A7R V Full-Frame Camera matches or exceeds it at a potentially lower price point.

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 Sony Alpha A7R V best suited to?

61MP full-frame, AI autofocus, 8-stop IBIS, 8K video. The high-resolution landscape and studio benchmark.

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. Sony Alpha A7R V Full-Frame Camera: 61MP files are huge and demand fast cards and storage; Resolution is overkill for casual or social shooting.

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 Sony Alpha A7R V Full-Frame Camera at 4.8★ from 1,400.

As an Amazon Associate we earn from qualifying purchases. Links below are affiliate links.