Hi everyone, I've been reading about iPhone camera sensors recently, and there's something I've been wondering about. Apple has explained the benefits of Quad Bayer, especially pixel binning for low-light photography and high-resolution capture. But why not use a traditional Bayer sensor with Dual Pixel PDAF instead? As far as I understand, a native Bayer arrangement could potentially preserve more fine detail without requiring remosaicing. And if both sensors have the same size and pixel count, couldn't the Bayer sensor also produce a cleaner 12MP image by downsampling? I'm also curious about the microlens design. Some sensors use one microlens shared by four pixels for phase detection. Wouldn't individual microlenses potentially offer better spatial resolution? So my main question is: What hardware-level advantages make Quad Bayer worth choosing over traditional Bayer, despite the additional image reconstruction involved? Is it mainly about read noise, analog binning, power efficiency, autofocus, or something else? I'm not a camera engineer, just someone interested in understanding the technology behind iPhone cameras. I'd really appreciate any technical insight. Thanks!