OM System
OM-D E-M10 Mark IV
Entry MFT body with IBIS and approachable controls.
$699
Released Aug 2020
Sony
Alpha 7R VI
66.8MP fully-stacked full-frame high-resolution body with 30fps bursts, 8K 30p, 4K 120p, and Sony's new BIONZ XR2 engine.
$4,499
Released Jun 2026
Alpha 7R VI is 5.8 years newer.
Wins
OM-D E-M10 Mark IV
Wins
Alpha 7R VI
TL;DR — Key differences
- BAlpha 7R VI has higher AF points / zones (759 vs 121)
- BAlpha 7R VI has higher 4K max frame rate (120 fps vs 30 fps)
- BAlpha 7R VI has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 7R VI has higher EVF resolution (9,437,184 vs 2,360,000)
- BAlpha 7R VI has higher Resolution (66.8 MP vs 20.3 MP)
Key specs at a glance
Size and weight, to scale
OM-D E-M10 Mark IV
122 × 85 × 49 mm
383 g (0.84 lb / 13.51 oz)
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
OM-D E-M10 Mark IV is 11mm narrower, 12mm shorter, and 34mm thinner than Alpha 7R VI.
OM-D E-M10 Mark IV is 330 g lighter than Alpha 7R VI.
Depth (front-to-back): 49mm OM-D E-M10 Mark IV · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
OM-D E-M10 Mark IV
122 × 85 mm
Alpha 7R VI
133 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
OM-D E-M10 Mark IV
122 × 49 mm
Alpha 7R VI
133 × 83 mm
Sensor size, to scale
OM-D E-M10 Mark IV
17.4 × 13 mm · Compact / large-type
226 mm² area
Alpha 7R VI
35.9 × 24 mm · Full Frame
862 mm² area
3.8× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
OM-D E-M10 Mark IV
Micro Four Thirds
130+
native lenses available
Alpha 7R VI
✓ more lensesSony E
350+
native lenses available
Counts include current first-party and major third-party native autofocus lenses.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose
OM-D E-M10 Mark IV
Dimensions (W×H×D mm)
Adds 121.7, 84.6, 49
Card types
Adds SD UHS-I
Subject recognition
Adds Face
Codecs
Adds MOV
Weight
383 g vs 713 g — lower is better
Battery life (CIPA)
640 shots vs 600 shots — higher is better
Reasons to choose
Alpha 7R VI
Dimensions (W×H×D mm)
Adds 132.7, 96.9, 82.9
Card types
Adds CFexpress Type A, SDXC UHS-II
AF points / zones
759 vs 121 — higher is better
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
4K max frame rate
120 fps vs 30 fps — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
EVF resolution
9,437,184 vs 2,360,000 — higher is better
Both cameras share
- ✓Eye AF — Both support eye af
- ✓In-body stabilization — Both support in-body stabilization
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
Pros & cons at a glance
Editorially curated highlights and trade-offs.
OM-D E-M10 Mark IV
Pros
- ✓IBIS at entry price
- ✓Compact
- ✓Easy to use
Cons
- –Older sensor
- –No weather sealing
- –MFT limits
Alpha 7R VI
Pros
- ✓66.8MP fully-stacked Exmor RS sensor
- ✓30fps blackout-free electronic burst
- ✓8K 30p and 4K 120p video
- ✓8.5-stop in-body stabilization
- ✓9.44M-dot HDR OLED EVF
Cons
- –Very expensive
- –Large files demand fast cards and storage
- –8K workflow can be heavy
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for landscape, OM-D E-M10 Mark IV or Alpha 7R VI?
Alpha 7R VI scores 7.5/10 versus 1.0/10 for OM-D E-M10 Mark IV — 66.8MP — massive detail for large prints.
What's the resolution difference between the OM-D E-M10 Mark IV and Alpha 7R VI?
OM-D E-M10 Mark IV is 20.3 MP and Alpha 7R VI is 66.8 MP, so the Alpha 7R VI captures more detail for cropping and large prints.
Do the OM-D E-M10 Mark IV and Alpha 7R VI have in-body image stabilization?
OM-D E-M10 Mark IV has 4.5-stop in-body image stabilization, while alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the OM-D E-M10 Mark IV or the Alpha 7R VI?
OM-D E-M10 Mark IV reaches 15 fps electronic. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the OM-D E-M10 Mark IV and Alpha 7R VI?
OM-D E-M10 Mark IV weighs 383 g and Alpha 7R VI weighs 713 g, so the OM-D E-M10 Mark IV is 330 g lighter.
Do the OM-D E-M10 Mark IV and Alpha 7R VI record 4K video?
OM-D E-M10 Mark IV: 4K up to 30p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the OM-D E-M10 Mark IV and Alpha 7R VI weather sealed?
OM-D E-M10 Mark IV: No. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the OM-D E-M10 Mark IV and 600 shots for the Alpha 7R VI, giving the OM-D E-M10 Mark IV the edge.
How much does each cost?
OM-D E-M10 Mark IV launched at $699 and Alpha 7R VI at $4,499. The OM-D E-M10 Mark IV is $3,800 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of OM System and Sony press materials.