It took exactly one photo for me to realize the awesome power of the iPhone 18 Pro's variable aperture
The iPhone 18 Pro Max main camera's new variable aperture is a huge deal and, in my limited experience, I can already see that it could transform iPhone photography. Still, to know why this matters, you need to understand how it works.
The best analogy is your eyes.
If you've ever squinted to read something, you understand how an aperture works. The more open your pupil, the more light that comes in, but it's widely scattered, making objects in the distance out of focus. If you squint, that cuts the amount of light coming into your eye, but it also removes more of the scattered light, leaving only the sharper light and imagery. On a camera, the open aperture (represented by lower f-stop numbers) has the same effect as your wide-open pupils. Lots more light, but only stuff nearest you is in focus. A smaller aperture, represented by higher f-stop...
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