OM System OM-5 vs Ricoh GR IIIx
Real-world comparison — specs, sensor size, autofocus, video, ownership reality. Adjust the workflow lens below to see how each body lands for travel, hybrid, wildlife, or studio use.
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.
Where to buy
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OM System
OM System OM-5
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Ricoh
Ricoh GR IIIx
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Common questions
Answers from this comparison
Drawn from the products' specs and category facts — same logic the comparison engine uses for its verdict.
Is the OM System OM-5 better than the Ricoh GR IIIx?
Neither product is universally better — the right answer depends on what you shoot. Walk the use-case verdicts in the comparison studio above to see which body lines up with your specific work.
Which is better for travel — the OM System OM-5 or the Ricoh GR IIIx?
For travel, the combination of weight, weather sealing, and lens flexibility matters more than headline specs. The carry-envelope module in the comparison above breaks down the practical kit weight of each body with a normal lens attached.
Should I get the fixed-lens body or the interchangeable-lens body?
Fixed-lens bodies remove the "which lens?" decision entirely — excellent if you mostly shoot one focal length and value pocketability. Interchangeable-lens bodies trade that simplicity for the ability to swap focal lengths and grow the kit over time.