Olympus OM-D E-M1 Mark III vs Sony A7 IV
Side-by-side comparison of features, pricing, ratings, and alternatives.
The Olympus OM-D E-M1 Mark III is a high-performance mirrorless camera designed for professional photographers and videographers who demand reliability and speed in a compact form factor. Featuring a robust weather-sealed magnesium alloy body, it is built to withstand harsh environmental conditions without weighing down the shooter. Powered by a 20.4-megapixel Live MOS sensor and the TruePic IX dual-quad-core processor, the camera delivers exceptional image quality, lightning-fast autofocus tracking, and advanced computational photography modes like handheld high-res shooting and Live ND filters.
The Sony A7 IV is a full-frame mirrorless camera positioned as an all-rounder, balancing high-resolution 33MP stills with capable 4K video up to 60fps, making it a popular choice for hybrid shooters who need both photo and video capability from one body. Sony's advanced real-time autofocus with eye and subject tracking works reliably for both humans and animals, and a fully articulating touchscreen aids vlogging and awkward-angle shooting. Dual card slots (one CFexpress Type A, one UHS-II SD) provide flexible storage and backup options, while in-body 5-axis image stabilization helps handheld shooting in lower light.
Body only around $2,498 MSRP.
- Industry-leading in-body image stabilization
- Compact and lightweight system compared to full-frame setups
- Extremely durable weather-sealed body construction
- Innovative computational photography features like Handheld High-Res
- Excellent balance of photo and video capability
- Reliable, fast autofocus tracking
- Strong in-body stabilization
- Flexible dual card slots
- Smaller Micro Four Thirds sensor has lower low-light performance than full-frame rivals
- Menu system can be complex and difficult to navigate
- Battery life is moderate and requires spare batteries for heavy shooting days
- Body-only price excludes lenses
- Menu system has a learning curve
- Rolling shutter present in some video modes
What reviewers say
Olympus OM-D E-M1 Mark III Reviews
No reviews yet.
Sony A7 IV Reviews
4.7 (3)Solid choice
I picked up Sony A7 IV a while back and haven't looked back. Flexible dual card slots. No major complaints so far. Would recommend.
Solid choice
I picked up Sony A7 IV a while back and haven't looked back. Reliable, fast autofocus tracking. No major complaints so far. Would recommend.
Does exactly what we need
We've been using Sony A7 IV for a few months now and it's genuinely made a difference. Strong in-body stabilization. One minor gripe: menu system has a learning curve, but it hasn't been a dealbreaker. Would recommend.
More alternatives & similar tools
Alternatives to Olympus OM-D E-M1 Mark III
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Alternatives to Sony A7 IV
View all →A rugged action camera with HyperSmooth stabilization and long battery life.
The Verdict
AI-generated from listing dataThe Olympus OM‑D E‑M1 Mark III is the safer default for rugged, travel‑focused still photography, while the Sony A7 IV trades portability for higher resolution and stronger video capabilities.
Key differences
- •Sensor size: Micro Four Thirds (Olympus) vs full‑frame (Sony) – impacts low‑light performance and depth of field.
- •Stabilization focus: Olympus offers up to 7.5‑stop IBIS with computational High‑Res mode; Sony provides solid 5‑axis IBIS but no handheld 50 MP mode.
- •Video: Sony supports 4K 60fps and hybrid workflows; Olympus lacks comparable video specs.
- •Durability: Olympus is dust‑, splash‑ and freeze‑proof (IPX1); Sony’s weather sealing is not specified.
- •Price: Olympus body MSRP $1,399 vs Sony A7 IV body $2,498, a $1,099 difference.
Key features
Olympus adds Handheld High‑Res 50 MP mode, Starry Sky AF, and Live ND computational photography not found on Sony.
Battery life
Sony’s battery life not listed but Olympus specifies ~420 shots; moderate battery suggests Sony likely exceeds it.
Ecosystem & compatibility
Sony offers dual card slots (CFexpress A + SD) and Imaging Edge app; Olympus provides only Wi‑Fi/Bluetooth and single card slot.
Comfort & design
Olympus is lighter and more compact than full‑frame Sony, enhancing travel comfort.
Durability
Olympus explicitly rated dust‑, splash‑, freeze‑proof (IPX1); Sony durability not specified.
Price & value
Olympus body costs $1,399 versus Sony’s $2,498, offering lower upfront cost.
Choose Olympus OM-D E-M1 Mark III if…
Wildlife, travel, or landscape shooters needing rugged, lightweight gear and high‑resolution handheld shots.
Choose Sony A7 IV if…
Hybrid photographers/videographers who prioritize full‑frame image quality and advanced video features.
Common questions
Is the Olympus cheaper overall when factoring lenses?
Olympus body MSRP is $1,399; Sony body is $2,498. Lens costs depend on system, but Olympus starts lower.
Can I shoot high‑resolution images without a tripod on either camera?
Only Olympus offers Handheld High‑Res Shot mode that creates 50 MP images without a tripod.
Which camera is more weather‑sealed for harsh environments?
Olympus is explicitly dust‑, splash‑, and freeze‑proof (IPX1); Sony’s weather sealing is not detailed in the facts.