Sony A7 III 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
Sony A7 III
Full-frame / 620g
Sony A7 IV
Full-frame / 659g
Workflow lens
Sony A7 IV is nearly tied for travel and everyday carry.
Sony A7 IV leads on video readiness by 10 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
Sony A7 III
Front view / 132 x 92mm
132 x 92 x 72mm
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 (1mm less than Sony A7 III), Sony A7 III is the shortest (4mm less than Sony A7 IV), Sony A7 III is the thinnest (8mm less than Sony A7 IV), and Sony A7 III is the lightest (39g less than Sony A7 IV).
Sony A7 III
Sony A7 IV
Class benchmarks
Sensor comparison
Sensor size to scale
×1 crop
×1 crop
All 2 use Full-frame sensors — sensor size is a wash here.
Decision matrix
Scores tuned for travel
Highlighted specs
Only specs that change the decision
Sensor
24.2MP full-frame BSI
Sensor
33MP full-frame BSI
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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Sony
Sony A7 III
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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 Sony A7 III 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.
Is the Sony A7 IV worth the extra money over the Sony A7 III?
The Sony A7 IV costs roughly $438 more. Whether the premium earns its keep depends on whether you actually use the capabilities it adds. Read the strengths and limitations sections of each product page before committing.
Which is better for travel — the Sony A7 III 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.