iPhone 18 Pro Max camera review: variable aperture from f/1.48

A review of the iPhone 18 Pro Max camera highlights its variable aperture Main Fusion lens, ranging from f/1.48 to f/4.0. The phone defaults to f/1.8 and switches to f/1.48 in low light; f/2.8 is sharpest, while f/4.0 produces a sun-star effect on bright light sources.

• Main Fusion camera adds variable aperture from f/1.48 to f/4.0
• Shooting defaults to f/1.8, switching to f/1.48 in low light
• Sharpest results at f/2.8; f/4.0 creates sun-star effects
• New pro camera tools are not tied to the Camera Control button