Digital photography

In Spain, all rights to your image are yours. Which means photographers need to get consent from subjects - although this doesn't have to be written down: if they smile into the camera, that's consent (being aware and acquiescing in the photo being taken, basically , is consenting).

There are exceptions to this:

• Taking a photo, in public, of a public official/public figure/someone engaged in a 'notorious' profession doesn't require consent
  
• Taking a photo of an event or occurrence to which the photographed person is merely an accessory
  
  

These exceptions, as I understand it, are intended to carve out a space for photojournalism (in which street photography can exist as well - but more Gary Winogrand than Bruce Gilden, if you see what I mean).

Complicating things further, you don't need permission from people who happen to be in your picture if you're taking a photo of a building. But you may need permission from the building's owner if it's something iconic and not publicly owned.

PS - this is all for Photography with a capital P. For 'mere photos' (ie snapshots) I think you're generally fine.

PPS I haven't lived in Spain for a long time, if anyone is more up-to-date than me I'll happily defer to them.