challenger A
OM System
OM-3 ASTRO
2025
VS
challenger B
Panasonic
Lumix GH7
2024
ReviewsOM System OM-3 ASTRO
OM System OM-3 ASTRO vs Panasonic Lumix GH7 — full comparison
Visual summary
— Reads in 5 seconds
7,3/ 10
PhotoTrès bon
7,1/ 10
VideoTrès bon
OM System
OM-3 ASTRO
7,1/ 10
PhotoTrès bon
8,4/ 10
VideoExcellent
Panasonic
Lumix GH7
OM System OM-3 ASTROPanasonic Lumix GH7
Standout strengths
— Where each camera shines
OM System
OM-3 ASTRO
Top advantages
- 102 400Extended ISO max4× vs Panasonic Lumix GH7
- 25 600Native ISO max2× vs Panasonic Lumix GH7
- 120 fpsElectronic burst1,6× vs Panasonic Lumix GH7
- 80Native ISO min+25 % vs Panasonic Lumix GH7
Panasonic
Lumix GH7
Top advantages
- 14 fpsMechanical burst2,3× vs OM System OM-3 ASTRO
- 25.2 MPMegapixels+24 % vs OM System OM-3 ASTRO
- 800 Mb/sMax bitrate3,9× vs OM System OM-3 ASTRO
- 300 fpsMax video fps+25 % vs OM System OM-3 ASTRO
Detailed spec-by-spec
— Round by round, the eight categories
Round 1
Sensor
SpecOM System OM-3 ASTROPanasonic Lumix GH7
Sensor format
MFT
MFT
Sensor type
Stacked CMOS
CMOS
Megapixels
20.4 MP
25.2 MP
Sensor size
17.4 × 13 mm
17.3 × 13 mm
Native ISO min
80
100
Native ISO max
25 600
12 800
Extended ISO max
102 400
25 600
Dynamic range (EV)
—
10.2 EV
Round 2
Autofocus
SpecOM System OM-3 ASTROPanasonic Lumix GH7
AF points
—
779
AF coverage
—
100 %
Eye AF (human)
Oui
Oui
Eye AF (animal)
Oui
Oui
AF low light (EV)
-8 EV
-4 EV
Round 3
Speed & burst
SpecOM System OM-3 ASTROPanasonic Lumix GH7
Mechanical burst
6 fps
14 fps
Electronic burst
120 fps
75 fps
RAW buffer
—
160
Max shutter speed
1/32000
1/32000
Round 4
Video
SpecOM System OM-3 ASTROPanasonic Lumix GH7
Max video resolution
C4K
5.8K
Max video fps
240 fps
300 fps
Max bitrate
205 Mb/s
800 Mb/s
Video codecs
H.265, H.264
ProRes 422 HQ, ProRes 422, ProRes RAW HQ, ProRes RAW, H.265, H.264
Recording modes
—
All-I, Long-GOP
Chroma subsampling
—
4:2:0, 4:2:2
Bit depth
10-bit
10-bit
Log profile
Oui
Oui
Log profiles
OM-Log400, HLG, Flat, OM-Cinema1, OM-Cinema2
V-Log, HLG, Cinelike D2, Cinelike V2, Like709
Internal RAW
—
Oui
External RAW
ProRes RAW
ProRes RAW, Blackmagic RAW
Rolling shutter
—
5.7 ms
4K crop
—
1×
Oversampling
—
Oui
Open Gate
—
Oui
Anamorphic desqueeze
—
1.3x, 1.5x, 1.8x, 2.0x
LUT support
—
user LUTs, in-camera LUT preview
Monitoring tools
—
waveform, vectorscope, false color, histogram, zebras
Active cooling
—
Non
Unlimited recording
—
Oui
Dual Native ISO
—
Oui
Proxy recording
—
Oui
XLR input
—
Oui
32-bit float audio
—
Oui
Genlock + Time Code
—
Oui
Round 5
Stabilisation
SpecOM System OM-3 ASTROPanasonic Lumix GH7
In-body stabilisation
Oui
Oui
IBIS rating
7.5 stops
7.5 stops
Round 6
Build
SpecOM System OM-3 ASTROPanasonic Lumix GH7
Weather sealing
Oui
Oui
Dual card slots
Non
Oui
Card types
SD UHS-II
CFexpress Type B, SD UHS-II
Round 7
Ergonomics & screen
SpecOM System OM-3 ASTROPanasonic Lumix GH7
Weight
496 g
805 g
Dimensions
139.3 x 88.9 x 45.8
138.4 x 100.3 x 99.6
Viewfinder type
EVF
EVF
Viewfinder resolution
2.36 M dots
3.68 M dots
Viewfinder magnification
0.69×
0.8×
Screen size
3″
3″
Screen resolution
1.62 M dots
1.84 M dots
Screen articulation
vari-angle
tilt + vari-angle
Touchscreen
Oui
Oui
Round 8
Connectivity & battery
SpecOM System OM-3 ASTROPanasonic Lumix GH7
Battery life (CIPA)
590 clichés
360 clichés
USB type
USB-C 3.2 (10 Gbps)
USB-C 3.2 Gen2 (10 Gbps)
HDMI type
Micro (Type D)
Full (Type A)
Wi-Fi
—
Oui
Bluetooth
—
Oui