John Gruber on the iPhone 5 camera:
Looking at the EXIF data, the big difference is that the photo shot with the built-in Camera app on the iPhone 5 had an ISO speed of 2500; the other three all maxed out at 800. It appears the iPhone 5 can go up to ISO 3200.
I wonder if this is just a matter optimizing apps for the iPhone 5’s camera, or if this is Apple being a dick and blocking third-party apps from using the higher ISO speeds. It’d seem really short-sighted of Apple to block third-party apps from going above 800 ISO, but then again it is Apple — so who knows.
Update: Developers can use it.