What is variable aperture and why should you care?

The iPhone 18 Pro is the first iPhone model to feature a variable aperture, a headlining feature for this year’s Pro models. An adjustable aperture has been an invaluable tool for photographers on professional and prosumer camera systems, and its absence from mobile cameras has become increasingly conspicuous as everything else on these devices has leveled up. There have been a handful of phones over the years that featured a variable aperture system for their main camera.

The feature never stuck around long enough to enter the lexicon of the average smartphone user, as most… What is variable aperture and why should you care. The feature never stuck around long enough to enter the lexicon of the average smartphone user, as most manufacturers who experimented with it abandoned it shortly after in favor of the fixed-aperture systems phone cameras have traditionally used.

There is an argument to be made that the iPhone getting a feature might be the quickest way for it to enter the mainstream consciousness. Variable aperture for the camera might just be nerdy enough that people who have it on their phone might not know how it works or even that it exists.