iPhone 18 Pro camera: variable aperture explained
The Pro camera system is one of the biggest differences from iPhone Duo: three 48MP rear cameras, variable aperture and telephoto reach up to 8x optical quality.

48MP main camera with variable aperture
The Fusion Main camera can switch between ƒ/1.48, ƒ/1.8, ƒ/2.8 and ƒ/4.0. This gives more control over depth of field and Apple highlights improved low-light results.
Who benefits most?
People shooting portraits, telephoto scenes, events or more ambitious photo/video projects get much more camera control than on iPhone Duo.
Related guides
Choose camera features that matter
A megapixel figure alone cannot establish real-world image quality. Subject, lighting, focal length, computational processing and editing flexibility all influence the result. These practical questions help separate genuinely useful features from impressive-sounding specification lists.
- Do you photograph action, portraits, landscapes or mostly everyday scenes?
- Is low-light consistency more important than long-range zoom?
- Do you need specialised video workflows and extra storage?
- Compare properly documented sample images and test methods, not slogans.