Apple Explains Why the iPhone 18 Pro Has a Variable Aperture

Apple revealed details of the variable aperture in the iPhone 18 Pro and Pro Max — a first in iPhone history. The mechanism uses six laser-cut blades made of polymer composite, with available values of f/1.48, f/1.8, f/2.8, and f/4. The goal is to increase light sensitivity without losing sharpness.

• Main camera has f/1.48 aperture instead of f/1.8
• Four aperture values available: f/1.48, f/1.8, f/2.8, f/4
• Mechanism is stepless, six blades thinner than a human hair
• Variable aperture gives control over depth of field, shutter speed, and star effect