OM System
OM-1 II
Flagship MFT with stacked sensor, 120fps, and pro wildlife features.
$2,399
Launch priceReleased Feb 2024
Ricoh
GR Digital IV
Cult compact GR Digital with 10MP CCD sensor, fast 28mm equivalent f/1.9 lens, and sensor-shift stabilization.
$599
Launch priceReleased Sep 2011
OM-1 II is 12.4 years newer.
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Wins
OM-1 II
Wins
GR Digital IV
4 categories tied
Which would you choose?
TL;DR — Key differences
- AOM-1 II has higher Burst (electronic) (120 fps vs 1.54 fps)
- AOM-1 II has higher ISO max (native) (102,400 vs 3,200)
- AOM-1 II has higher Burst (mechanical) (10 fps vs 1.54 fps)
- BGR Digital IV has lower Weight (219 g vs 599 g)
- AOM-1 II has higher Resolution (20.4 MP vs 10 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareOM-1 II
135 × 92 × 73 mm
599 g (1.32 lb / 21.13 oz)
Credit card
85.6 × 54 mm
for scale
GR Digital IV
109 × 60 × 33 mm
219 g (0.48 lb / 7.73 oz)
OM-1 II is 26mm wider, 32mm taller, and 40mm thicker than GR Digital IV.
OM-1 II is 380 g heavier than GR Digital IV.
Depth (front-to-back): 73mm OM-1 II · 33mm GR Digital IV
Sensor size, to scale
OM-1 II
17.4 × 13 mm · Compact / large-type
226 mm² area
Lens ecosystem
Native lens selection
OM-1 II
✓ more lensesMicro Four Thirds
130+
native lenses available
GR Digital IV: mount data unavailable
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-1 II
Subject recognition
Adds People, Birds, Animals…
Codecs
Adds H.264, H.265, MOV
Dimensions (W×H×D mm)
Adds 134.8, 91.6, 72.7
Card types
Adds SD UHS-II, SD UHS-I
Burst (electronic)
120 fps vs 1.54 fps — higher is better
ISO max (native)
102,400 vs 3,200 — higher is better
Burst (mechanical)
10 fps vs 1.54 fps — higher is better
Resolution
20.4 MP vs 10 MP — higher is better
Reasons to choose
GR Digital IV
Codecs
Adds Motion JPEG AVI
Dimensions (W×H×D mm)
Adds 108.6, 59.8, 32.5
Card types
Adds SD, SDHC, Eye-Fi
Weight
219 g vs 599 g — lower is better
Both cameras share
- ✓ISO min (native) — Both 80
- ✓4K max frame rate — Both 60 fps
- ✓Max video bit rate — Both 150 Mbps
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
- ✓Card slots — Both 1
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
GR Digital IV
Pros
- ✓Fast f/1.9 GR lens
- ✓CCD rendering
- ✓Compact classic
- ✓Sensor-shift stabilization
Cons
- –Small sensor
- –VGA video only
- –Very old model
Decided which one is right for you?
Compare live prices for the OM-1 II and GR Digital IV at major authorized retailers.
OM System OM-1 II
Ricoh GR Digital IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, OM-1 II or GR Digital IV?
OM-1 II scores 10.0/10 versus 1.0/10 for GR Digital IV — 120fps burst — pro-level action capture.
What's the resolution difference between the OM-1 II and GR Digital IV?
OM-1 II is 20.4 MP and GR Digital IV is 10 MP, so the OM-1 II captures more detail for cropping and large prints.
Do the OM-1 II and GR Digital IV have in-body image stabilization?
OM-1 II has 8.5-stop in-body image stabilization, while GR Digital IV has in-body image stabilization.
Which shoots faster bursts — the OM-1 II or the GR Digital IV?
OM-1 II reaches 120 fps electronic. GR Digital IV reaches 1.54 fps electronic.
What's the weight difference between the OM-1 II and GR Digital IV?
OM-1 II weighs 599 g and GR Digital IV weighs 219 g, so the GR Digital IV is 380 g lighter.
Do the OM-1 II and GR Digital IV record 4K video?
OM-1 II: 4K up to 60p. GR Digital IV: 4K up to 60p.
Are the OM-1 II and GR Digital IV weather sealed?
OM-1 II: Yes. GR Digital IV: No.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the OM-1 II and 390 shots for the GR Digital IV, giving the OM-1 II the edge.
How much does each cost?
OM-1 II launched at $2,399 and GR Digital IV at $599. The GR Digital IV is $1,800 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way OM-1 II vs GR Digital IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.