OM System
OM-D E-M1 Mark III
Previous Olympus flagship still capable for wildlife.
$1,799
Launch priceReleased Feb 2020
Sony
Alpha 7 V
33MP partially stacked Exmor RS hybrid with BIONZ XR2 AI, 30fps blackout-free burst, 7.5-stop IBIS, and 4K 60p oversampled from 7K.
$2,899
Launch priceReleased Dec 2025
Alpha 7 V is 5.8 years newer.
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Wins
OM-D E-M1 Mark III
Wins
Alpha 7 V
4 categories tied
TL;DR — Key differences
- BAlpha 7 V has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 7 V has higher ISO max (native) (51,200 vs 25,600)
- BAlpha 7 V has higher 4K max frame rate (120 fps vs 60 fps)
- BAlpha 7 V has higher Resolution (33 MP vs 20.4 MP)
- BAlpha 7 V has higher Burst (electronic) (30 fps vs 20 fps)
Key specs at a glance
Size and weight, to scale
OM-D E-M1 Mark III
134 × 91 × 72 mm
580 g (1.28 lb / 20.46 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 V
130 × 96 × 82 mm
695 g (1.53 lb / 24.52 oz)
OM-D E-M1 Mark III is 5mm shorter and 10mm thinner than Alpha 7 V but it is also 4mm wider.
OM-D E-M1 Mark III is 115 g lighter than Alpha 7 V.
Depth (front-to-back): 72mm OM-D E-M1 Mark III · 82mm Alpha 7 V
Back view, to scale
Width × Height — same proportions as the front of the body.
OM-D E-M1 Mark III
134 × 91 mm
Credit card
85.6 × 54 mm
Alpha 7 V
130 × 96 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
OM-D E-M1 Mark III
134 × 72 mm
Credit card
85.6 × 54 mm
Alpha 7 V
130 × 82 mm
Sensor size, to scale
OM-D E-M1 Mark III
17.3 × 13 mm · Micro Four Thirds
225 mm² area
Alpha 7 V
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-M1 Mark III
Micro Four Thirds
130+
native lenses available
Alpha 7 V
✓ 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-M1 Mark III
AF low-light limit
-7 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 134, 91, 72
AF points / zones
1053 vs 759 — higher is better
Subject recognition
Adds Vehicle
RAW buffer depth
120 frames vs 95 frames — higher is better
Weight
580 g vs 695 g — lower is better
AF frame coverage
100 % vs 94 % — higher is better
Battery life (CIPA)
640 shots vs 630 shots — higher is better
Reasons to choose
Alpha 7 V
Dimensions (W×H×D mm)
Adds 130.3, 96.4, 82.4
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Subject recognition
Adds Insect, Car, Train…
ISO max (native)
51,200 vs 25,600 — higher is better
4K max frame rate
120 fps vs 60 fps — higher is better
Internal RAW video
Only Alpha 7 V supports it
Card types
Adds CFexpress Type A / SD UHS-II
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓In-body stabilization — Both support in-body stabilization
Pros & cons at a glance
Editorially curated highlights and trade-offs.
OM-D E-M1 Mark III
Pros
- ✓Pro build
- ✓60fps mode
- ✓Great IBIS
Cons
- –Superseded
- –MFT
- –Older AF
Alpha 7 V
Pros
- ✓33MP partially stacked sensor — ~4.5× faster readout than α7 IV
- ✓Blackout-free 30 fps with full AF/AE (electronic shutter)
- ✓7.5-stop central / 6.5-stop peripheral IBIS (CIPA 2024)
- ✓759-point phase-detect AF down to EV -4 with AI subject recognition
- ✓7K oversampled 4K 60p (full-frame, no pixel binning) + 4K 120p
- ✓Pre-Capture and dual USB-C (10 Gbps + USB 2.0)
- ✓Up to 16 stops dynamic range
Cons
- –Premium price vs α7 IV
- –4K 120p typically requires APS-C / Super 35 crop
- –Heavier than α7 IV (695 g vs 659 g with battery)
- –Complex menu and feature set
Decided which one is right for you?
Compare live prices for the OM-D E-M1 Mark III and Alpha 7 V at major authorized retailers.
OM System OM-D E-M1 Mark III
Sony Alpha 7 V
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, OM-D E-M1 Mark III or Alpha 7 V?
Alpha 7 V scores 8.0/10 versus 4.0/10 for OM-D E-M1 Mark III — 33MP — ample resolution for portraits.
What's the resolution difference between the OM-D E-M1 Mark III and Alpha 7 V?
OM-D E-M1 Mark III is 20.4 MP and Alpha 7 V is 33 MP, so the Alpha 7 V captures more detail for cropping and large prints.
Do the OM-D E-M1 Mark III and Alpha 7 V have in-body image stabilization?
OM-D E-M1 Mark III has 7-stop in-body image stabilization, while alpha 7 V has 7.5-stop in-body image stabilization.
Which shoots faster bursts — the OM-D E-M1 Mark III or the Alpha 7 V?
OM-D E-M1 Mark III reaches 20 fps electronic. Alpha 7 V reaches 30 fps electronic.
What's the weight difference between the OM-D E-M1 Mark III and Alpha 7 V?
OM-D E-M1 Mark III weighs 580 g and Alpha 7 V weighs 695 g, so the OM-D E-M1 Mark III is 115 g lighter.
Do the OM-D E-M1 Mark III and Alpha 7 V record 4K video?
OM-D E-M1 Mark III: 4K up to 60p. Alpha 7 V: 4K up to 120p.
Are the OM-D E-M1 Mark III and Alpha 7 V weather sealed?
OM-D E-M1 Mark III: Yes. Alpha 7 V: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the OM-D E-M1 Mark III and 630 shots for the Alpha 7 V, giving the OM-D E-M1 Mark III the edge.
How much does each cost?
OM-D E-M1 Mark III launched at $1,799 and Alpha 7 V at $2,899. The OM-D E-M1 Mark III is $1,100 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of OM System and Sony press materials.