It took exactly one photo for me to realize the awesome power of the iPhone 18 Pro’s variable aperture
techradar.com Sep 20, 2026

It took exactly one photo for me to realize the awesome power of the iPhone 18 Pro’s variable aperture

AI-summarised brief · reviewed before publication

Apple’s iPhone 18 Pro Max introduces a variable aperture on its 48‑megapixel main camera, offering five physical f‑stops (ƒ/1.48, ƒ/1.8, ƒ/2.8, ƒ/4.0 and Auto). The mechanism uses interlocked blades thinner than a human hair that slide to widen or narrow the opening, a first for iPhone hardware. Only the main lens receives this capability; the 4× telephoto (ƒ/2.8) and ultrawide (ƒ/2.2) remain fixed. In real‑world testing, the author observed noticeably improved low‑light performance and depth‑of‑field control, likening the effect to squinting an eye to sharpen focus. While not reaching DSLR extremes such as ƒ/11, the range expands creative options for mobile photographers, especially in bright or dim environments.

💡 Why It Matters

  • · The variable aperture gives iPhone users unprecedented control over exposure and background blur, turning a mass‑market phone into a more versatile photographic tool.