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Spec drill · Max ISO

SL3 vs α1 II

A side-by-side readout for max iso.

Leica · SL3
100000
Sony · α1 II
102400
▲ Lead
Verdictα1 II wins on max iso.
Context

Understanding max iso

Max ISO is a numeric spec measured in raw units. On this metric, higher values are generally better, but returns diminish past category-typical thresholds — going from a low value to a mid value usually matters far more than going from a mid value to a high one. 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 max iso together with the rest of the spec sheet so one outlier doesn't distort the verdict.

This matchupα1 II's 102400 is roughly 2% higher than SL3's 100000 (a 2400 gap). Whether that gap is noticeable depends on workload — small percentage gaps rarely change day-to-day experience, while gaps of 20% or more usually do.

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Other specs on this comparison

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