OM System
OM-D E-M10 Mark IV
Entry MFT body with IBIS and approachable controls.
$699
Released Aug 2020
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
Alpha 7 IV is 1.2 years newer.
Wins
OM-D E-M10 Mark IV
Wins
Alpha 7 IV
2 categories tied
TL;DR — Key differences
- BAlpha 7 IV has higher AF points / zones (759 vs 121)
- BAlpha 7 IV has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 7 IV has lower ISO min (native) (100 vs 200)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 25,600)
- BAlpha 7 IV has higher 4K max frame rate (60 fps vs 30 fps)
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 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
OM-D E-M10 Mark IV is 10mm narrower, 12mm shorter, and 31mm thinner than Alpha 7 IV.
OM-D E-M10 Mark IV is 275 g lighter than Alpha 7 IV.
Depth (front-to-back): 49mm OM-D E-M10 Mark IV · 80mm Alpha 7 IV
Sensor size, to scale
OM-D E-M10 Mark IV
17.4 × 13 mm · Compact / large-type
226 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 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 7 IV
✓ 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
Subject recognition
Adds Face, Eye
Dimensions (W×H×D mm)
Adds 121.7, 84.6, 49
Card types
Adds SD UHS-I
Codecs
Adds MOV
Weight
383 g vs 658 g — lower is better
Burst (electronic)
15 fps vs 10 fps — higher is better
Battery life (CIPA)
640 shots vs 580 shots — higher is better
Reasons to choose
Alpha 7 IV
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
Card types
Adds CFexpress Type A, SD UHS-II
AF points / zones
759 vs 121 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
AA filter
Only Alpha 7 IV supports it
ISO min (native)
100 vs 200 — lower is better
Both cameras share
- ✓Eye AF — Both support eye af
- ✓In-body stabilization — Both support in-body stabilization
- ✓EVF magnification — Both 0.78 ×
- ✓EVF refresh rate — Both 120 Hz
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
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 7 IV
Pros
- ✓33MP — more detail for cropping and print
- ✓10-bit 4K 60p (Super35 crop) / 4K 30p full-frame
- ✓Full-size HDMI port
- ✓759 phase-detect AF points
Cons
- –4K 60p requires Super35 crop
- –10fps burst lags behind R6 II at 40fps
- –Complex menu system
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 7 IV?
Alpha 7 IV scores 7.5/10 versus 1.0/10 for OM-D E-M10 Mark IV — 33MP — ample resolution.
What's the resolution difference between the OM-D E-M10 Mark IV and Alpha 7 IV?
OM-D E-M10 Mark IV is 20.3 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the OM-D E-M10 Mark IV and Alpha 7 IV have in-body image stabilization?
OM-D E-M10 Mark IV has 4.5-stop in-body image stabilization, while alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the OM-D E-M10 Mark IV or the Alpha 7 IV?
OM-D E-M10 Mark IV reaches 15 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the OM-D E-M10 Mark IV and Alpha 7 IV?
OM-D E-M10 Mark IV weighs 383 g and Alpha 7 IV weighs 658 g, so the OM-D E-M10 Mark IV is 275 g lighter.
Do the OM-D E-M10 Mark IV and Alpha 7 IV record 4K video?
OM-D E-M10 Mark IV: 4K up to 30p. Alpha 7 IV: 4K up to 60p.
Are the OM-D E-M10 Mark IV and Alpha 7 IV weather sealed?
OM-D E-M10 Mark IV: No. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the OM-D E-M10 Mark IV and 580 shots for the Alpha 7 IV, 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 7 IV at $2,499. The OM-D E-M10 Mark IV is $1,800 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.