1
Either Picture Info by Spaso Lazarevic or Photo-Info by Benjamin Sautermeister should give you the information you want, but there's no way built into the OS.
1
This is not currently possible with the stock camera app or with Nokia Camera. You 'd have to look for an an alternative camera app which supports that - unfortunately I don't know any.
You can suggest this features on http://windowsphone.uservoice.com as well.
Only top voted, non community-wiki answers of a minimum length are eligible