OM System OM-1 Mark II vs Sony A7 IV
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-1 Mark II
Micro 4/3 / 599g
Sony A7 IV
Full-frame / 659g
Workflow lens
Sony A7 IV is the stronger fit for travel and everyday carry.
Sony A7 IV leads on video readiness by 36 points.
Sony A7 IV leads on resale strength by 18 points.
Sony A7 IV leads on value and market timing by 30 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-1 Mark II
Front view / 135 x 92mm
135 x 92 x 73mm
Sony A7 IV
Front view / 131 x 96mm
131 x 96 x 80mm
Width
Height
Depth
Weight
External dimensions and carry delta
Sony A7 IV is the narrowest (4mm less than OM System OM-1 Mark II), OM System OM-1 Mark II is the shortest (4mm less than Sony A7 IV), OM System OM-1 Mark II is the thinnest (7mm less than Sony A7 IV), and OM System OM-1 Mark II is the lightest (60g less than Sony A7 IV).
OM System OM-1 Mark II
Sony A7 IV
Class benchmarks
Sensor comparison
Sensor size to scale
×2 crop
×1 crop
Full-frame captures ~3.8× 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
Stabilisation
8.5 stops
Sensor
33MP full-frame BSI
Weather sealing
IP53
Video
4K/60p (S35), 7K oversampled
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-1 Mark II
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Sony
Sony A7 IV
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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-1 Mark II better than the Sony A7 IV?
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-1 Mark II or the Sony A7 IV?
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.