we want to do an app similar as:
[url removed, login to view]
[url removed, login to view]!/id364365478?mt=8
and we need a demo to realize the attachment effect, we need this kind len effect demo.
if you happened to have done a similar app, you give us one demo code to realize one of the len/filter effect when open the camera in the app. we dont need all the len effect, we just want one of the typical white black sketch effect.