title: Android - Distorted Camera Preview
body: <p>I am currently writing an android app which runs displays a circle drawable on the preview frame, runs edge detection and then takes a photo once the user lines up a coin perfectly in the circle.</p>
  
  <p>For some reason (despite being fullscreen with no title etc.), I am started to realize the camera preview is every so slightly distorted. 
  I have tried setting the previewsize to 480x640 while also setting the surfaceholder size to 480x640, however if I save the preview to bitmap and also take a photo, you can notice the distortion.</p>
  
  <p>Has anybody else had this kind of problem / or have any ideas as to a solution?</p>