title: Is it possible to draw grid lines using AVFoundation Framework in Objective c
body: <p>I am creating the app like VSCO Cam, so I imported AVFoundation framework to my project and used AVCaptureSession to create the custom camera.I also need to create the custom filters as same as VSCO Cam.
      Now I want to add the gridlines on the camera by clicking a button.I searched for more tutorials, but I couldn't sort it out.I tried drawing grid lines using AVCaptureManager by seeing this link <a href="https://stackoverflow.com/questions/18226496/how-to-draw-grid-lines-when-camera-is-open-avcapturemanager/18226786#18226786">how to draw grid lines when camera is open avcapturemanager</a>, But I cannot overlay the view with camera view.I'm a new bee to development.
   Thanks in advance. </p>