title: Obtaining iPhone Photo Exposure Information
body: <p>Is there any way to get the exposure settings (aperture, shutter speed, ISO) for a photo taken on an iPhone?</p>
  
  <p>An app running on the iPhone can use the UIImagePickerController interface for taking pictures, but that doesn't provide much info about the picture.</p>
  
  <p>The EXIF data for a photo taken on the iPhone contains aperture info, but not shutter speed or ISO.</p>