OM System
OM-1 II
Flagship MFT with stacked sensor, 120fps, and pro wildlife features.
$2,399
Launch priceReleased Feb 2024
Ricoh
GR IVx
40mm-equivalent GR IV sibling with a newly designed 26.1mm f/2.8 lens, 25.74MP APS-C sensor, 5-axis SR, 4K video, 53GB internal storage, and pocket street-camera handling. Winter 2026 planned.
$1,499
Launch priceReleased Dec 2026
GR IVx is 2.8 years newer.
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Wins
OM-1 II
Wins
GR IVx
2 categories tied
Which would you choose?
TL;DR — Key differences
- AOM-1 II has higher Burst (electronic) (120 fps vs 4 fps)
- AOM-1 II has higher AF points / zones (1053 vs 49)
- AOM-1 II has higher 1080p max frame rate (240 fps vs 60 fps)
- AOM-1 II has higher Burst (mechanical) (10 fps vs 4 fps)
- BGR IVx has lower Weight (265 g vs 599 g)
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 IVx
109 × 61 × 33 mm
265 g (0.58 lb / 9.35 oz)
OM-1 II is 25mm wider, 30mm taller, and 39mm thicker than GR IVx.
OM-1 II is 334 g heavier than GR IVx.
Depth (front-to-back): 73mm OM-1 II · 33mm GR IVx
Sensor size, to scale
OM-1 II
17.4 × 13 mm · Compact / large-type
226 mm² area
GR IVx
23.3 × 15.5 mm · APS-C
361 mm² area
1.6× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
OM-1 II
✓ more lensesMicro Four Thirds
130+
native lenses available
GR IVx: 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…
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 4 fps — higher is better
AF points / zones
1053 vs 49 — higher is better
1080p max frame rate
240 fps vs 60 fps — higher is better
Codecs
Adds H.264, H.265
Burst (mechanical)
10 fps vs 4 fps — higher is better
Reasons to choose
GR IVx
Subject recognition
Adds Face, Eye
Dimensions (W×H×D mm)
Adds 109.4, 61.1, 33.4
Card types
Adds microSD, microSDHC, microSDXC UHS-I
Weight
265 g vs 599 g — lower is better
ISO max (native)
204,800 vs 102,400 — higher is better
Codecs
Adds MPEG-4 AVC/H.264
Resolution
25.74 MP vs 20.4 MP — higher is better
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Max video bit rate — Both 150 Mbps
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
- ✓Card slots — Both 1
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
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 IVx
Pros
- ✓New 26.1mm f/2.8 GR lens (40mm equiv.)
- ✓GR IV 25.74MP APS-C + 5-axis SR
- ✓4K 30p/24p and 53GB built-in storage
- ✓Snap focus, 50/71mm crops, 2-stop ND
- ✓Pocketable 265g body
Cons
- –Price not yet announced (listed at GR IV $1,499)
- –Winter 2026 or later — still in development as of Aug 2026
- –No built-in EVF
- –Fixed 40mm-equiv. lens
Decided which one is right for you?
Compare live prices for the OM-1 II and GR IVx at major authorized retailers.
OM System OM-1 II
Ricoh GR IVx
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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 IVx?
OM-1 II scores 10.0/10 versus 1.0/10 for GR IVx — 120fps burst — pro-level action capture.
What's the resolution difference between the OM-1 II and GR IVx?
OM-1 II is 20.4 MP and GR IVx is 25.74 MP, so the GR IVx captures more detail for cropping and large prints.
Do the OM-1 II and GR IVx have in-body image stabilization?
OM-1 II has 8.5-stop in-body image stabilization, while GR IVx has in-body image stabilization.
Which shoots faster bursts — the OM-1 II or the GR IVx?
OM-1 II reaches 120 fps electronic. GR IVx reaches 4 fps electronic.
What's the weight difference between the OM-1 II and GR IVx?
OM-1 II weighs 599 g and GR IVx weighs 265 g, so the GR IVx is 334 g lighter.
Do the OM-1 II and GR IVx record 4K video?
OM-1 II: 4K up to 60p. GR IVx: 4K up to 30p.
Are the OM-1 II and GR IVx weather sealed?
OM-1 II: Yes. GR IVx: No.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the OM-1 II and 250 shots for the GR IVx, giving the OM-1 II the edge.
How much does each cost?
OM-1 II launched at $2,399 and GR IVx at $1,499. The GR IVx is $900 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way OM-1 II vs GR IVx vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed September 2026.
Product images courtesy of OM System and Ricoh press materials.