OM-D E-M10 IVvs A7 IV
GearScore™ Verdict — Which should you buy?
Travel & Everyday — OM-D E-M10 IV (2020): Compact Micro Four Thirds body with built-in IBIS — ideal for travellers who want stability without bulk.
Portrait & Wedding Photography — A7 IV (2021): The full-frame portrait benchmark — 33MP, AI Eye AF, and exceptional skin-tone rendering in a pro-grade hybrid body.
Who should buy what
OM-D E-M10 IV (2020)
- Beginners and enthusiasts who want a compact, stylish Micro Four Thirds camera
- Travellers who want a small, light system without sacrificing image quality
- Smartphone upgraders who want a proper camera that still fits in a bag
- Anyone who wants built-in selfie capability in a traditional camera body
A7 IV (2021)
- Working photographers who want a reliable full-frame all-rounder
- Portrait, wedding, and event photographers needing 33MP and fast AF
- A7 III owners ready for a major upgrade in resolution, AF, and video
- Hybrid shooters who want 4K/60p and 33MP stills in one dependable body
Quick take: The a7 iv has the highest resolution at 33mp; the om-d e-m10 iv is the most affordable; only the a7 iv is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-D E-M10 IV (2020) | A7 IV (2021) |
|---|---|---|
| Price | £469 | £2,299 |
| Sensor | 20.3MP Micro Four Thirds Live MOS | 33MP Full-frame BSI Exmor R CMOS |
| Resolution | 20.3MP | 33.0MP |
| Video | 4K/30p, 1080p/60p | 4K/60p oversampled, 10-bit internal, S-Log3, S-Cinetone |
| Autofocus | Phase-detect + contrast detect, 121 points | 759-point phase-detect, AI subject recognition |
| Stabilisation | 5-axis IBIS, 4.5 stops | 5-axis IBIS, 5.5 stops |
| Burst Rate | 15fps | 10fps mechanical, 30fps electronic |
| Battery Life | ~360 shots (CIPA) | ~580 shots (CIPA) |
| Weight | 383g body only | 659g body only |
| Dimensions | 121.4 × 83.6 × 49.0mm | 131.3 × 96.4 × 79.8mm |
| Weather Sealed | No | Yes |
| Viewfinder | EVF, 2.36M dots, 0.46× magnification | EVF, 3.69M dots, 0.78× magnification |
| Screen | 3.0" tilting touchscreen | 3.0" vari-angle touchscreen |
| Mount | Micro Four Thirds | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-I slot | Dual slots: CFexpress Type A + SD UHS-II |
| Connectivity | USB Micro-B, Bluetooth, Wi-Fi, micro HDMI | USB-C (3.2 Gen 2), Bluetooth, Wi-Fi |
Suitability by genre
| Genre | OM-D E-M10 IV | A7 IV |
|---|---|---|
| Travel | — | |
| Street | — | |
| Family & Everyday | — | |
| Portrait | — | |
| Landscape | ||
| Sports & Action | ||
| Studio Portraits | — | |
| Outdoor Portraits | — | |
| Wedding & Events | — | |
| Vlogging & Video | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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