SUMMARY
The iPhone 18 Pro and Pro Max now feature a variable aperture lens, capable of adjusting between f/4 and f/1.48. This allows the camera to automatically optimize for shutter speed or depth of field, or be manually set by the user. While not new to smartphones, with previous implementations by Huawei and Xiaomi, Apple's inclusion raises questions about its necessity given the inherent deep depth of field in smaller smartphone sensors. The variable aperture may serve as a hardware differentiator for Apple in a market increasingly focused on AI upgrades, even if its real-world impact on image quality is debated.
TAKEAWAYS
iPhone 18 Pro and Pro Max include a new variable aperture lens.
The lens can adjust from f/4 to f/1.48 for light and depth of field control.
Variable aperture technology has appeared in other smartphones previously.
Its necessity on phones is questioned due to inherent deep depth of field.