The camera being one of the most heavily used features in iPhones, it takes a lot of work to make it work perfectly in all light conditions and in all environments. Each iPhone camera holds as many as two hundred separate parts as well as many wires that are half as thin as a strand of your hair.
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The cameras in the latest iPhone 6s and 6s Plus are quite advanced compared to their predecessors. The new 12MP iSight camera is comparable to other cameras with much higher resolutions and offers 4K videos and Live Photos which turn your snaps into mini-videos. It also brings in a state-of-the-art sensor, a new image signal processor, advanced pixel technology, Focus Pixels, improved local tone mapping, and optical image stabilization. New features also include optical image stabilization in videos and ability to edit two streams of 4K video at the same time.
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The 5MP front camera, apart from taking brilliant selfies, is also capable of producing HD-quality FaceTime videos. It features Retina Flash which is powered by an innovative technology — a custom display chip that allows the display to flash three times brighter than usual.
Graham Townsend, the head of the camera team at Apple, says that everytime you click a photo with your iPhone camera, as many as 24 billion operations take place inside yout iPhone. No wender why it takes 800 people to develop it as one of the best smartphone cameras in the world.