Originally posted by Rondec The point to me is that even if you could put a 70-200mm f2.8 equivalent lens on your cell phone it wouldn't take the place of a "real" camera because the ergonomics are poor. Holding a credit card with two hands, trying not to drop it while I frame an image and hit a red button somewhere on the screen is OK for a couple of snaps, but shooting multiple images over the course of a day is frankly uncomfortable. At the same time, I can shoot for an eight hour day with a K-1 and 24-70mm without my hands or eyes getting tired.
If you don't care of shutter speed/iso etc, great smartphone focus instantaneously and take decent quality snaps. As of taking lot of photos, there isn't really an issue, honestly. Framing isn't an issue neither as smartphones don't have 70-200 equivalent but at best a 50mm equivalent.
Sure you or me want more, but this isn't really the issue. The ergonomics, the quality, the framing, the AF, all of theses things are good enough. For some high end models, some aspect of it are better than what our pro gear does. For example the iphones take the photos all the time and when you click the button, it take the last one that was already taken so there instant reactivity. 4K movies work just fine and HDR is applied on the go without having to think about while keeping the subject sharp. All smartphones have a pano app either included or you can download one... The highend smartphone get the performance of quite basic dedicated phone on some aspect. Worse on some much better on other. And it doesn't take place.
And we may not want to admit it, making fun of people using an ipad to take a snapshot... But a bigger screen of higher quality is an argument for framing. We don't want to see it, but most phones have now around 5" screen, more than twice the real estate of our backscreen, and there are often full HD or more, that is 2X the resolution of the best EVF and 6X of the typical camera back screen... Yes camera maker try to hide the fact by speaking of dots, not pixels. But you need 3 dots for a pixel.