I have a Nokia Lumia 800. When I use the camera button to take a photograph, autofocus does not work. Instead, I tap the subject on the screen for it to focus on it.
I expect to have to tap-to-click when I want to focus on a non-central subject, but why doesn't autofocus work at all when using the dedicated camera button? What it should do is focus on the central target at least, but it would be better if it had some intelligence to focus on the nearest large object, whether it is in the centre or not, like digital compact cameras usually do.
When using the camera button, as there is no autofocus, it focuses at infinity, so it is still useful for landscapes; otherwise, it is only useful to turn on camera mode.
Is this a problem with all Windows Phones, or is it the Nokia camera software? I understand that the manufacturer is mostly responsible for the camera app.