title: IPhone/IPad: Image Resolution Question
body: <p>So I'm making a universal app (iphone3gs/iphone4/ipad/)... But I have a question about images.</p>
  
  <p>Say we have an image of a smiley face...
  Would you have 3 separate images (each saved with a different width/heights) 
  for all devices i.e.:<br/>
  smiley-iPad.png (for ipad)<br/>
  smiley.png    (for iphone 3gs)<br/>
  smiley@2x.png (for iphone 4)<br/></p>
  
  <p>or would you just have one image:
  smiley.png (that is saved in high resolution i.e., large width/height and then scaled with interface builder)</p>
  
  <p>seems like that latter would save alot of work, what are your thoughts on this, which is better?</p>