Variable aperture camera expected in iPhone 18 Pro

Variable aperture camera will give iPhone 18 Pro users more photo options

iPhone 17 Pro has a new wider camera plateau, which could feasibly contain a variable aperture mechanism.

Rumor Score

🤔 Possible

The iPhone 18 Pro's camera system will be more flexible for photographers, with claims of a variable aperture main camera and a larger-aperture telephoto camera undergoing testing and expected to arrive later in 2026.

The camera is one of the key marketable elements of the iPhone, and the rumor mill frequently tries to guess about the next changes to arrive. If current rumors are to be believed, that should include variable apertures.

According to Weibo leaker "Digital Chat Station," Apple is currently testing a version of the iPhone with a variable aperture fitted. This is a feature that could be introduced as part of the iPhone 18 Pro range in September.

The account also adds that there will be an update to the telephoto camera system, with Apple considering going up from the existing f/2.8 offered in the iPhone 17 Pro.

More aperture, more light

The aperture is a key part of the exposure triangle, which deals with the sensitivity of the sensor (ISO), the shutter speed determining how long a shot needs to take, and the aperture determining how much light hits the sensor.

A variable aperture would increase and decrease the size of a hole that lets light through to the sensor. However, most mobile cameras use a fixed aperture instead of implementing a mechanical element inside a very confined space.

With Apple's introduction of the camera plateau as an expanded camera bump, that should give more space for a mechanism to be installed.

The result is that a fixed-aperture camera has to work with the other elements of the exposure triangle to perfectly expose the shot, but that can limit the styles of image a person can shoot. With a variable aperture, there's a lot more range in what can be pulled off in the shot.

Take the typical portrait shot, which in the iPhone relies on computational photography to digitally blur foreground and background items around the subject. A variable aperture can allow that blur or "bokeh" to be produced in-camera without post-processing.

A variable aperture, or a larger aperture full stop, can enable more light to be collected by the sensor, which can help improve the shutter speed and noise performance too.

Rumors revisited

While Digital Chat Station doesn't have one of the best reputations when it comes to accuracy, much like other Weibo leakers in general, it's a rumor that has circulated for quite some time, and through a variety of sources.

This includes claims from 2024 that it would arrive in the iPhone 17, before Ming-Chi Kuo chimed in from November 2024 about the iPhone 18 gaining such a feature.

It has periodically resurfaced since then, and is one of the more prominent predictions for the iPhone 18 Pro range in general.

This is also not the only time Digital Chat Station has waded into aperture discussions. In October 2025, it claimed to have "supply chain information" about the Pro models having "variable aperture materials."

Comments

charlesn · 1934 comments · 13 Years About 2 months ago

There are many variables with a variable aperture lens and how it's implemented, so it will be hard to assess how much benefit it will be to photographers until camera reviewers can put it through its paces after release. For example: while it may be able to achieve bokeh optically, it's the quality of the bokeh that counts most, and you can't assume that its optical bokeh will be better than or even as good as what can be achieved with computational photography. TBD. Ditto for the larger apertures--in theory a good idea, but is there a compromise in sharpness to achieve the faster lens? Again, TBD. I also wonder how subject a mechanical aperture will be to being thrown out of spec when you inevitably drop your phone--and probably more than once.

willett · 27 comments · 16 Years About 2 months ago

“A variable aperture can allow that blur or "bokeh" to be produced in-camera without post-processing.”

It’s not exactly “produced in-camera”, a larger aperture optically means the image is in focus only over a narrow depth of field. Depending on the subject and your goal, that’s either a cool bokeh or it blurs part of the subject and you need to close down the aperture. The bigger point is that it will be great to have aperture control on iPhones, more capabilities.

mfryd · 306 comments · 18 Years About 2 months ago

The story is misleading, and confused about photography. It appears to be based on optimistic marketing, and not actual photographic issues.

"Depth of field" is the range of distances that appear to be in focus. "Bokeh" is not the "blur", but the quality of the blur. A lens with good bokeh may render an out of focus point as a smooth blur. A lens with bad bokeh may render it as a blurry doughnut. Depth of field is dependent on the actual aperture diameter, not the f/stop (which is the ratio of aperture diameter to focal length.)

Sensor size places a limit on the largest practical aperture. We are pretty much already there with modern iPhones. A variable aperture will allow smaller openings, but not significantly larger ones. The iPhone sensor is so small, that we already have a deep depth of field. That's why shallow depth of field needs to be simulated with software.

Smaller openings would increase the already large depth of field, and also increase diffraction blurring, This is not necessarily an improvement.

The bottom line, is that a variable aperture on an iPhone will have a small useful range. it really isn't going to make much of a difference.

The story also confuses "exposure" (the light reaching the sensor) with how dark or light the image looks. Historically, these two are not related. Proper exposure yields a negative with good density. How dark or light the image looks is determined at print time in the darkroom.

Exposure is primarily determined by subject lighting, aperture, and shutter speed. That's the "exposure triangle". The ISO setting is just the context for interpreting the collected data. ISO affects how the data from the exposure is processed, not the exposure itself.

The real benefit of a variable aperture is one of marketing. While it's a significant feature on a camera with a large sensor, it loses significance on a camera with a small sensor. However, marketing doesn't depend on the reality of the situation.

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