By the time your finger taps the shutter on an iPhone 18 Pro, the photo already exists. The camera starts buffering frames the second you open the app. Your tap doesn't capture anything, it selects. The phone reaches back into the last fraction of a second, grabs the frames it already shot, and fuses them, taking the sharpest version of each region, highlight detail from the darker frames, shadow detail from the brighter ones. Apple said back in 2019 this pipeline ran about a trillion…