challenger A
OM System
OM-3
2025
VS
challenger B
OM System
OM-3 ASTRO
2025
ReviewsOM System OM-3 ASTRO
OM System OM-3 vs OM System OM-3 ASTRO — full comparison
Visual summary
— Reads in 5 seconds
7,6/ 10
PhotoTrès bon
6,2/ 10
VideoBon
OM System
OM-3
7,3/ 10
PhotoTrès bon
7,1/ 10
VideoTrès bon
OM System
OM-3 ASTRO
OM System OM-3OM System OM-3 ASTRO
Standout strengths
— Where each camera shines
OM System
OM-3
Top advantages
- 1053AF pointsAbsent sur OM System OM-3 ASTRO
- 100 %AF coverageAbsent sur OM System OM-3 ASTRO
- NonInternal RAWAbsent sur OM System OM-3 ASTRO
- 5.8 msRolling shutterAbsent sur OM System OM-3 ASTRO
OM System
OM-3 ASTRO
Top advantages
No dominant strength identified.
Detailed spec-by-spec
— Round by round, the eight categories
Round 1
Sensor
SpecOM System OM-3OM System OM-3 ASTRO
Sensor format
MFT
MFT
Sensor type
Stacked CMOS
Stacked CMOS
Megapixels
20.4 MP
20.4 MP
Sensor size
17.4 × 13 mm
17.4 × 13 mm
Native ISO min
80
80
Native ISO max
25 600
25 600
Extended ISO max
102 400
102 400
Round 2
Autofocus
SpecOM System OM-3OM System OM-3 ASTRO
AF points
1053
—
AF coverage
100 %
—
Eye AF (human)
Oui
Oui
Eye AF (animal)
Oui
Oui
AF low light (EV)
-8 EV
-8 EV
Round 3
Speed & burst
SpecOM System OM-3OM System OM-3 ASTRO
Mechanical burst
6 fps
6 fps
Electronic burst
120 fps
120 fps
Max shutter speed
1/32000
1/32000
Round 4
Video
SpecOM System OM-3OM System OM-3 ASTRO
Max video resolution
C4K
C4K
Max video fps
240 fps
240 fps
Max bitrate
205 Mb/s
205 Mb/s
Video codecs
H.265, H.264
H.265, H.264
Recording modes
All-I, Long-GOP
—
Chroma subsampling
4:2:0
—
Bit depth
10-bit
10-bit
Log profile
Oui
Oui
Log profiles
OM-Log400, HLG, Flat, OM-Cinema1, OM-Cinema2
OM-Log400, HLG, Flat, OM-Cinema1, OM-Cinema2
Internal RAW
Non
—
External RAW
ProRes RAW
ProRes RAW
Rolling shutter
5.8 ms
—
4K crop
1×
—
Open Gate
Non
—
Anamorphic desqueeze
2.0x
—
LUT support
user LUTs, in-camera LUT preview
—
Monitoring tools
waveform, vectorscope, histogram, zebras
—
Active cooling
Non
—
Unlimited recording
Oui
—
Dual Native ISO
Non
—
Proxy recording
Oui
—
XLR input
Non
—
32-bit float audio
Non
—
Genlock + Time Code
Non
—
Round 5
Stabilisation
SpecOM System OM-3OM System OM-3 ASTRO
In-body stabilisation
Oui
Oui
IBIS rating
7.5 stops
7.5 stops
Round 6
Build
SpecOM System OM-3OM System OM-3 ASTRO
Weather sealing
Oui
Oui
Dual card slots
Non
Non
Card types
SD UHS-II
SD UHS-II
Round 7
Ergonomics & screen
SpecOM System OM-3OM System OM-3 ASTRO
Weight
496 g
496 g
Dimensions
139.3 x 88.9 x 45.8
139.3 x 88.9 x 45.8
Viewfinder type
EVF
EVF
Viewfinder resolution
2.36 M dots
2.36 M dots
Viewfinder magnification
0.69×
0.69×
Screen size
3″
3″
Screen resolution
1.62 M dots
1.62 M dots
Screen articulation
vari-angle
vari-angle
Touchscreen
Oui
Oui
Round 8
Connectivity & battery
SpecOM System OM-3OM System OM-3 ASTRO
Battery life (CIPA)
590 clichés
590 clichés
USB type
USB-C 3.2 (10 Gbps)
USB-C 3.2 (10 Gbps)
HDMI type
Micro (Type D)
Micro (Type D)
Wi-Fi
Oui
—
Bluetooth
Oui
—