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Spec drill · Weight

EOS R1 vs α9 III

A side-by-side readout for weight.

Canon · EOS R1
1115g
Sony · α9 III
703g
▲ Lead
Verdictα9 III wins on weight.
Context

Understanding weight

Weight is a numeric spec measured in g. On this metric, lower values are generally better — smaller, lighter, thinner, or less demanding usually translates to a more comfortable or more efficient product. When comparing two products, focus on the percentage gap rather than the raw delta: a 200-unit lead means something very different at the low end of the range than at the high end. Pay attention to the unit, too — manufacturers sometimes quote peak or burst figures that are not sustained in real-world use. Cross-check the published number against independent measurements where possible, especially for performance and battery claims. Finally, remember that a single spec rarely tells the whole story; the Mars Score weighs weight together with the rest of the spec sheet so one outlier doesn't distort the verdict.

This matchupEOS R1's 1115g is roughly 59% more than α9 III's 703g (a 412g gap). Lower is better here, so α9 III takes the lead in real use.

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Other specs on this comparison

See the full Cameras category for all products ranked by Mars Score.