Sony
Sony Alpha A7 IV
$2499
Released 2021-12
Best Mirrorless Cameras · head-to-head
Sony Alpha A7 IV vs OM System OM-1
A sourced, side-by-side comparison. OM System OM-1 is cheaper at $2199. Every spec and price links to its source.
OM System
OM System OM-1
$2199Cheaper
Released 2022-03
Which is better: the Sony Alpha A7 IV or OM System OM-1?
The OM System OM-1 wins 2 of the 2 specs we compare head to head; the other wins 0. The OM System OM-1 is the cheaper at $2199. The OM System OM-1 both leads on specs and costs less — the straightforward pick.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Key specs, head to head
The numbers that decide it, drawn to scale — longer bar wins, the accent bar is the stronger figure.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Sony Alpha A7 IV | OM System OM-1 |
|---|---|---|
| US price | $2499 | $2199 |
| Brand | Sony | OM System |
| Released | 2021-12 | 2022-03 |
| Sensor format | Full-frame | Micro Four Thirds |
| Megapixels | 33 | 20.4 |
| Max video | 4K@60p | 4K@60p |
| Ibis | Yes | Yes |
| Mount | Sony E | Micro Four Thirds |
| Continuous (fps) | 10 | 50 |
| Weight (g) | 658 | 599 |
| Release | 2021-12 | 2022-03 |
Sources — Sony Alpha A7 IV: imaging-resource.com (verified 2026-06-15). OM System OM-1: explore.omsystem.com (verified 2026-06-15).
What's the difference between the Sony Alpha A7 IV and OM System OM-1?
Where the two actually differ on the specs we track (5 of 7). Matching specs are omitted.
- Sensor format: Sony Alpha A7 IV Full-frame vs OM System OM-1 Micro Four Thirds
- Megapixels: Sony Alpha A7 IV 33 vs OM System OM-1 20.4
- Mount: Sony Alpha A7 IV Sony E vs OM System OM-1 Micro Four Thirds
- Continuous (fps): Sony Alpha A7 IV 10 vs OM System OM-1 50
- Weight (g): Sony Alpha A7 IV 658 vs OM System OM-1 599
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Sony Alpha A7 IV
Two whitelisted hands-on reviews (TechRadar, Engadget) survived verification and agree the A7 IV is the best all-round hybrid mirrorless of its era: class-leading autofocus, strong 33MP stills and oversampled 10-bit 4:2:2 4K video. Both flag pronounced rolling shutter with the electronic shutter, a cropped Super 35 4K/60p mode, a price increase over the A7 III, and merely-average 10fps burst. All quotes are verbatim in the source text and all measured values are supported. (2 sourced reviews, 2 lab-tested.)
Praised: Class-leading autofocus with reliable subject/eye tracking for stills and video; Powerful hybrid video: oversampled 4K with 10-bit 4:2:2 color; Strong high-ISO/low-light performance and accurate out-of-camera color.
Flagged: Pronounced rolling shutter with the electronic/silent shutter; 4K/60p only available with a cropped Super 35 (APS-C) mode; Price hike over the A7 III (~$500 per Engadget; ~20-30% per TechRadar).
OM System OM-1
Both whitelisted testers rate the OM-1 a strong, rugged Micro Four Thirds flagship: RTINGS calls it a very well-built, weather-sealed body with excellent ergonomics, an incredibly quick electronic-shutter burst, and one of the best IBIS systems; DPReview lab-tested 50 fps AF, 1,053 cross-type AF points and gave it a Gold Award. Main flaw: buffer clears slowly. (2 sourced reviews, 2 lab-tested.)
Praised: Class-leading in-body image stabilization; Rugged, weather-sealed, well-built body with excellent ergonomics; Very fast electronic-shutter burst shooting with strong AF/subject detection.
Flagged: Large photo buffer takes a very long time to empty once full; Smaller sensor still trails larger formats on absolute image quality.