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-5
Micro 4/3 / 620g
Ricoh GR IIIx
APS-C / 620g
Workflow lens
Ricoh GR IIIx is nearly tied for travel and everyday carry.
Ricoh GR IIIx leads on resale strength by 26 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-5
Front view / 132 x 92mm
132 x 92 x 72mm
Ricoh GR IIIx
Front view / 132 x 92mm
132 x 92 x 72mm
Width
Height
Depth
Weight
External dimensions and carry delta
OM System OM-5 and Ricoh GR IIIx share the same external size profile in the current data model.
Fixed-lens bodies include their lens in the envelope; interchangeable bodies still need a lens attached.
OM System OM-5
Ricoh GR IIIx
Class benchmarks
Sensor comparison
Sensor size to scale
×2 crop
×1.53 crop
APS-C captures ~1.6× the sensor area of Micro 4/3, a real low-light and depth-of-field edge.
Decision matrix
Scores tuned for travel
Highlighted specs
Only specs that change the decision
Sensor
20MP MFT
Sensor
24MP APS-C
Stabilisation
7.5 stops
Lens
40mm f/2.8
Community comparison
Owner consensus · not specsCommunity comparison appears once owners vote on these products — 6 more votes across the pair will unlock it.