Apple added a variable aperture lens to the iPhone 18 Pro and 18 Pro Max, but the default camera software artificially holds the hardware back. While the native app locks users to just 4 aperture presets, third party developers have figured out how to unlock fine tuned control. New updates from independent camera apps now give photographers 10 distinct stops across the exact same lens.
Shooting with the standard camera app on the iPhone 18 Pro and 18 Pro Max restricts aperture control to only 4 fixed positions: f/1.48, f/1.8, f/2.8, and f/4.0. Apple recently added manual controls for shutter speed, white balance, focus, and a live histogram. That makes the decision to lock the physical aperture mechanism down to a few basic stops even more puzzling. The hardware can clearly handle much smaller adjustments, but the default interface hides that capability.
We made the iPhone 18 Variable Aperture even better!
— Moment Pro Camera (@MomentProCamera) September 24, 2026
In Moment Pro Camera II, you can now set your aperture from f1.48 to f4.0 in 1/3 stop increments the whole way.
Exposure Priorities support variable aperture - you can set your aperture in Auto Priority or Shutter Priority,… pic.twitter.com/rc54N58Ou5
Independent software teams moved quickly to expose what the lens can actually do. The free Blackmagic Camera app rolled out version 3.5 with expanded variable aperture settings, providing 10 separate values between f/1.48 and f/4.0. The team behind Moment Pro Camera II pushed a similar update. Their software introduces adjustments in 1/3 stop increments, matching the standard increments found on professional dedicated cameras.
Having 10 aperture steps gives mobile photographers granular control over exposure and natural depth of field. Instead of jumping straight from wide open f/1.48 to f/1.8, creators can dial in precise settings to manage harsh sunlight or achieve subtle background blur. The breakthrough proves that Apple implemented an artificial software wall rather than an engineering constraint, leaving third party tools as the only way to get true optical flexibility.
