Compare real-world fit, not spreadsheet noise.
Pick up to four products and tune the verdict around travel, hybrid work, wildlife, resale safety or pure value. GearAtlas weighs carry size, ecosystem cost, market timing and ownership risk in one calm decision surface.
Visual
Estimated
Ranked
OM System OM-3
Micro 4/3 / 620g
Panasonic Lumix GH7
Micro 4/3 / 620g
Workflow lens
Panasonic Lumix GH7 is nearly tied for travel and everyday carry.
Panasonic Lumix GH7 leads on video readiness by 36 points.
Camera size studio
Relative body dimensions
Front, back and top views are drawn from external dimensions so the size relationship stays proportional.
View
Mode
OM System OM-3
Front view / 132 x 92mm
132 x 92 x 72mm
Panasonic Lumix GH7
Front view / 132 x 92mm
132 x 92 x 72mm
Width
Height
Depth
Weight
External dimensions and carry delta
OM System OM-3 and Panasonic Lumix GH7 share the same external size profile in the current data model.
OM System OM-3
Panasonic Lumix GH7
Class benchmarks
Sensor comparison
Sensor size to scale
×2 crop
×2 crop
All 2 use Micro 4/3 sensors — sensor size is a wash here.
Decision matrix
Scores tuned for travel
Highlighted specs
Only specs that change the decision
Sensor
20MP stacked MFT
Sensor
25MP MFT
Weather sealing
IP53
Video
5.7K/30p ProRes
Community comparison
Owner consensus · not specsCommunity comparison appears once owners vote on these products — 6 more votes across the pair will unlock it.