Apple is evaluating four camera upgrades for future iPhone models, with the first new feature scheduled for this year's iPhone 18 Pro models, according to a reputable Chinese leaker.

The Weibo-based account Digital Chat Station claims that Apple has implementation plans for the following upgrades:

• Variable aperture
• 1/1.12-inch "ultra-large" main camera sensor
• Enhanced optical image stabilization for ultra-wide lens
• 200-megapixel periscope telephoto lens

The variable aperture is widely rumored to be introduced with the iPhone 18 Pro and iPhone 18 Pro Max, expected to launch this September. Apple supply chain analyst Ming-Chi Kuo reported in December 2024 that the main rear camera on both ‌iPhone 18 Pro‌ models will offer variable aperture. More recently in October, a report claimed that Apple is moving ahead with those plans and was discussing components with suppliers.

Apple has never implemented a variable aperture on an iPhone. From the iPhone 14 Pro through the iPhone 17 Pro, the main camera uses a fixed ƒ/1.78 aperture, meaning the lens remains fully open at all times when capturing images. In contrast, a variable aperture lets the camera control how much light reaches the sensor. In low-light conditions, it opens to admit more light, while in bright scenes, it closes to avoid overexposure. This should also give users more control over depth of field.

The other camera upgrades the leaker mentioned appear to be ones that Apple is testing for future models beyond the iPhone 18 Pro, with an unclear timeline for implementation.

Regarding the "ultra-large" main sensor, the 1/1.12-inch label is based on a legacy optical format, not a literal measurement. It dates back to video camera tubes, so the number doesn't correspond directly to the sensor's physical width. In practice, a 1/1.12-inch sensor has a diagonal of around 14.5mm – far smaller than the label might suggest, but very large by smartphone standards. It's the same size as Sony's LYTIA LYT-901, which is shipping in the Vivo X300 Ultra. It's significantly larger than the 1/1.28-inch main sensor the iPhone 17 Pro models use, and would offer improved low-light performance, dynamic range, and signal-to-noise ratio.

As for the 200-megapixel periscope telephoto lens, Digital Chat Station has mentioned multiple times that Apple is studying the technology, but they recently said it is unlikely to feature in an iPhone before 2028.

Digital Chat Station has more than three million followers on Weibo, and has a track record of accurately leaking Apple-related information. For example, they accurately revealed the overall design of the iPhone Air and iPhone 17 Pro, as well as the triple 48-megapixel rear camera system of the ‌iPhone 17 Pro.‌ Recently, the leaker claimed Apple's first foldable, expected to arrive alongside the iPhone 18 Pro models, will be called "iPhone Ultra."