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OM System

OM-1 II

Flagship MFT with stacked sensor, 120fps, and pro wildlife features.

$2,399

Launch price

Released Feb 2024

vs
Alpha 7 V

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 price

Released Dec 2025

Alpha 7 V is 1.8 years newer.

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Wins

9categories

OM-1 II

Sports & ActionTravel

Wins

5categories

Alpha 7 V

WildlifeSports & Action

3 categories tied

Which would you choose?

TL;DR — Key differences

OM-1 II wins 2 categories·Alpha 7 V wins 3 categories
  • AOM-1 II has higher Burst (electronic) (120 fps vs 30 fps)
  • BAlpha 7 V has higher Max video bit rate (600 Mbps vs 150 Mbps)
  • AOM-1 II has higher ISO max (native) (102,400 vs 51,200)
  • BAlpha 7 V has higher 4K max frame rate (120 fps vs 60 fps)
  • BAlpha 7 V has higher Card slots (2 vs 1)

Key specs at a glance

OM-1 IIAlpha 7 V
Resolution20.4 MP33 MP
SensorMFTFull Frame
ISO max102,40051,200
Burst120 fps30 fps
4K60 fps120 fps
IBIS8.5-stop7.5-stop
Weight599 g695 g
Battery520 shots630 shots

Size and weight, to scale

OM-1 II

135 × 92 × 73 mm

599 g (1.32 lb / 21.13 oz)

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

for scale

Alpha 7 V front view

Alpha 7 V

130 × 96 × 82 mm

695 g (1.53 lb / 24.52 oz)

OM-1 II is 5mm shorter and 10mm thinner than Alpha 7 V but it is also 5mm wider.

OM-1 II is 96 g lighter than Alpha 7 V.

Depth (front-to-back): 73mm OM-1 II · 82mm Alpha 7 V

Back view, to scale

Width × Height — same proportions as the front of the body.

OM-1 II

135 × 92 mm

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

Alpha 7 V back view

Alpha 7 V

130 × 96 mm

Top view, to scale

Width × Depth (front-to-back) — see which body is chunkier on the table.

OM-1 II

135 × 73 mm

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

Alpha 7 V top view

Alpha 7 V

130 × 82 mm

Sensor size, to scale

OM-1 II

17.4 × 13 mm · Compact / large-type

226 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-1 II

Micro Four Thirds

130+

native lenses available

60 first-party70 third-party

Alpha 7 V

✓ more lenses

Sony E

350+

native lenses available

80 first-party270 third-party

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

Use caseOM-1 IIAlpha 7 V
Portrait
4.0Fair
8.0Excellent✓ wins
Sports & Action
10.0Excellent✓ wins
9.5Excellent
Video & Hybrid
5.5Fair
8.0Excellent✓ wins
Landscape
2.5Limited
7.5Good✓ wins
Travel
7.0Good
7.5Good✓ wins
Wildlife
6.5Good
10.0Excellent✓ wins
Vlogging
7.0Good✓ wins
5.5Fair

Why pick one over the other

Reasons to choose

OM-1 II

  • AF low-light limit

    -8 EV vs -4 EV — lower is better

  • Subject recognition

    Adds People, Birds, Animals…

  • Dimensions (W×H×D mm)

    Adds 134.8, 91.6, 72.7

  • Burst (electronic)

    120 fps vs 30 fps — higher is better

  • ISO max (native)

    102,400 vs 51,200 — higher is better

  • Card types

    Adds SD UHS-I

  • EVF resolution

    5,760,000 vs 3,686,400 — higher is better

  • Codecs

    Adds MOV

Reasons to choose

Alpha 7 V

  • Subject recognition

    Adds Human, Animal, Bird…

  • 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

  • AA filter

    Only Alpha 7 V supports it

  • 4K max frame rate

    120 fps vs 60 fps — higher is better

  • Internal RAW video

    Only Alpha 7 V supports it

  • Card slots

    2 vs 1 — higher is better

Both cameras share

  • Eye AFBoth support eye af
  • Animal / bird AFBoth support animal / bird af
  • Burst (mechanical)Both 10 fps
  • Pre-Capture / Pre-ReleaseBoth support pre-capture / pre-release
  • In-body stabilization (IBIS)Both support in-body stabilization (ibis)
  • Weather sealingBoth support weather sealing

Pros & cons at a glance

Editorially curated highlights and trade-offs.

OM-1 II

Pros

  • 120fps stills
  • Stacked MFT
  • IP53 weather sealing
  • Computational features

Cons

  • MFT sensor size
  • Smaller ecosystem
  • Menu complexity

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-1 II and Alpha 7 V at major authorized retailers.

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Full specifications

= category winner

OM-1 II
Alpha 7 V
Resolution
20.4 MP
33 MP+62%
Sensor type
4/3 Stacked BSI Live MOS
Full Frame Exmor RS CMOS (partially stacked)
Sensor size
17.4 x 13.0 mm
35.9 × 23.9 mm
AA filter
No
Yes
OM-1 II
Alpha 7 V
Processor
TruePic X
BIONZ XR2 + AI processing unit
OM-1 II
Alpha 7 V
ISO min (native)
80−20 less
100
ISO max (native)
102,400+1 stop
51,200
ISO max (expanded)
102,400
204,800
OM-1 II
Alpha 7 V
Shutter type
Computerised focal-plane shutter + electronic shutter
Mechanical + Electronic
Max mechanical speed
1/8000 sec
1/8000 sec
Max electronic speed
1/32000 sec
1/16000 sec

Frequently asked

Quick answers generated from verified specs.

Which is better for landscape, OM-1 II or Alpha 7 V?

Alpha 7 V scores 7.5/10 versus 2.5/10 for OM-1 II — 33MP — ample resolution.

What's the resolution difference between the OM-1 II and Alpha 7 V?

OM-1 II 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-1 II and Alpha 7 V have in-body image stabilization?

OM-1 II has 8.5-stop in-body image stabilization, while Alpha 7 V has 7.5-stop in-body image stabilization.

Which shoots faster bursts — the OM-1 II or the Alpha 7 V?

OM-1 II reaches 120 fps electronic. Alpha 7 V reaches 30 fps electronic.

What's the weight difference between the OM-1 II and Alpha 7 V?

OM-1 II weighs 599 g and Alpha 7 V weighs 695 g, so the OM-1 II is 96 g lighter.

Do the OM-1 II and Alpha 7 V record 4K video?

OM-1 II: 4K up to 60p. Alpha 7 V: 4K up to 120p.

Are the OM-1 II and Alpha 7 V weather sealed?

OM-1 II: Yes. Alpha 7 V: Yes.

Which has better battery life?

Rated battery life is 520 shots (CIPA) for the OM-1 II and 630 shots for the Alpha 7 V, giving the Alpha 7 V the edge.

How much does each cost?

OM-1 II launched at $2,399 and Alpha 7 V at $2,899. The OM-1 II is $500 less.

Can't decide between two? Compare a third camera.

Add any camera to get a three-way OM-1 II vs Alpha 7 V vs X comparison.

Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.

Product images courtesy of OM System and Sony press materials.