It appears Leibovitz is a firm believer in the theory that the best camera in the world is the one you have with you.
This is absolutely the case. I've owned a number of "really nice" P&S cameras over the years, most of them Canon Powershot and ELPH series. But the camera's not always with me. I've only had my iPhone 4 for a few months and the picture quality is pretty laughable in all but the most optimistic of circumstances -- but the thing is in my pocket every time I'm out. So which camera do I now find myself shooting with more? When I plan an outing, sure, my Canon. When I'm really serious, out comes my Nikon D70s. But if I'm posting an impromptu photo onto Facebook, or taking a quick note of something -- out comes the iPhone.
A lot of what’s frightening/uncomfortable to people about the iPhone 4S camera being SO good—and in significant ways much better* than an SLR—is an ego/identity thing, I think.
Being a “pro” and using tools/methods other people don’t feels good. I feel good that I hand-code web sites, while someone else uses a template! So I can understand this emotion. Same if you’re not a paid pro, but like the sense of owning “stuff” that sets you above/apart from other people.
It's also a cost thing, I think. I spent thousands of dollars on my specialized equipment and so it MUST be better than that thing you got for so little!
A number of years ago I did video editing as a hobby, and I started with a regular 8mm camcorder and worked my way up to a Sony VX2000 miniDV camcorder. This was a prosumer, 3-CCD camera that cost me about $4500 Cdn ($2300 USD at the time) and took video that was night-and-day better than any consumer camcorder out there. I was very pleased with the quality of video, especially its ability in low light.
Last year I bought a tiny little Canon HF100 camcorder that records 1080p video onto memory cards, for $400. While many aspects of its picture quality do not beat the VX2000, 1080p easily trumps 480i. And nowadays
many cameras have built-in 1080p video recording ability. Looking back, I've been pretty slow to accept that any of these tiny cameras could even come close to being as usable as the video from my expensive camera, let alone be
more useful because of how accessible they are.
This seems to be a general trend. Streaming video isn't as high quality as 1080p Blu-Ray, but it is taking off because it's more accessible. (Edit: yep, several people beat me to this point already.)
I don't mean to be pedantic, but the iPhone is a smartphone not a camera. It's £500 and for that price you could get a great camera.
You absolutely can. And then you end up leaving that great camera at home or in the car during that one moment that a cool or funny photo moment comes along. But your smartphone is in your pocket. Which will you reach for?
Reminds me of the time I eschewed P&S's completely when I first got my Nikon D70. Then my family went to an amusement park and I wanted to do some rides. Uh, where do I put this D70 while I ride the roller coaster? Hmm... suddenly I saw the use of having a pocketable handheld camera.