title: Confused regarding @3x artwork for iPhone 6+
body: <p>I have an app in the App store to which I want to add @3x files. I read various posts but I am not sure how to proceed.</p>
  
  <p>I read that coordinate space for the iPhone 6 plus is 414x736 points, (X3) that yields 1242x2208 pixels and not 1080x1920. Also I read that the iPhone 6+ will divide that by 1.15 before rendering to the display which will make it fit.</p>
  
  <p>So lets say my App has a button image that is 44x44 pixels (the @2x file), then I should draw it as 44/2*3*1.15 to make it fit my 1242x2208 photoshop canvas. (/2 for points, times 3 for pixels *1.15 to overscale) </p>
  
  <p>Now Apple documentation says @3x button need to have 66 pixels area, so that seems too small as it is not scaled up by 1.15.</p>
  
  <p>This leads me to think my App canvas should be 1080x1920 which would avoid the iPhone having expensive rescale. So which is right?  of course @3x would not be @3x.</p>