Is a Touch Screen DSLR Inevitable? | Gadget Lab | Wired.com:
The iPhone, of coure, is entirely touch controlled, but the whole interface would be welcome on a compact camera. There are already touch-screen compacts, but so far SLRs have escaped the treatment. Why? Well, for one, they are usually used held up to the eye — live-view can be useful sometimes but I’d bet that most DSLR users compose and shoot with the viewfinder. This would, it would seem, make touch-to-focus almost useless, something which could slow things down more than speed them up.