I found the iPhone 18 Pro’s best camera feature, and it isn’t variable aperture

ZDNETOct 3, 2026Oct 3, 2026, 12:30 AM AST

An aperture is the lens opening that lets light reach the camera sensor, and the iPhone 18 Pro widened its main camera's maximum opening from f/1.8 to f/1.48, which Apple says brings about 50 percent better low-light performance. Testing found the improvement noticeable, while the phone's new variable aperture, which can stop down to f/4, changes background blur less than expected because the sensor is small.

Summary written with AI by HowTechMoves, based on reporting by ZDNET.

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