title: iPhone camera images are rotated when uploaded to web
body: <p>I'm using UIImagePickerController to take a photo in portrait mode on the iphone and save to the web.  The photo appears in portrait on the phone, but rotates 90 degrees on the web.</p>
  
  <p>If I download the photo and look at it in Preview (mac) or Photoshop (mac or pc) it is in portrait again. In Windows Picture Viewer (pc) it's rotated to landscape.</p>
  
  <p>Do I need to apply a rotation transform to the image data before uploading?  Will I then also need to remove the meta-data that's rotating it in Photoshop and in Preview?</p>