The iPhone 18 Pro and iPhone 18 Pro Max add manual aperture and shutter speed controls to Apple’s own Camera app. They pair with the new 48MP Fusion main camera, whose six-blade aperture runs from f/1.48 to f/4.
Until now, anyone who wanted direct control over exposure on an iPhone had to use a third-party app, and even then the aperture was fixed. Apple’s announcement puts both settings inside the stock app for the first time, which is a notable shift for a camera Apple has always run on automatic.
What aperture and shutter speed each control
Aperture sets how large the lens opening is. A low f-number such as f/1.48 lets in more light and blurs the background, while f/4 lets in less light and keeps more of the scene in focus.
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Shutter speed sets how long the sensor collects light for each frame. A short exposure freezes movement, and a long exposure brightens the image but records motion as blur.
| Setting | Raise it | Lower it |
|---|---|---|
| Aperture (f-number) | Less light, deeper focus, sharper backgrounds | More light, shallower focus, softer backgrounds |
| Shutter speed (exposure time) | More light, motion blur, risk of hand shake | Less light, frozen motion, crisper action |
The two settings trade against each other. Open the aperture and you can use a faster shutter for the same brightness; close it and the shutter has to stay open longer to compensate.
When you would change them on an iPhone 18 Pro
- Portraits: open to f/1.48 for a soft background that comes from the lens rather than software.
- Sports and pets: pick a fast shutter and let the aperture open up to keep the exposure balanced.
- Landscapes and architecture: close toward f/4 so foreground and background stay sharp together.
- Moving water or light trails: use a long shutter, a narrow aperture and something steady to rest the phone on.
What Apple has not said yet
Apple’s press release confirms that the controls exist but does not describe the interface, the shutter speed range or whether ISO can be set manually alongside them. It also has not said whether the controls apply to video as well as stills.
There is no word on whether third-party camera apps get access to the variable aperture, or whether manual control is exclusive to the main camera. Apple did not announce changes to the Ultra Wide or front camera, so it is reasonable to assume the aperture control is a main camera feature until Apple says otherwise.
The iPhone 18 Pro starts at $1,199 and the Pro Max at $1,299, with pre-orders opening Saturday, September 12 at 5 a.m. PT and deliveries from Friday, September 18. Expect a fuller picture of the manual controls once the phones reach reviewers.
