I am trying to imitate the grainy photocopy effect in the poster below. I have found some photoshop tutorials but it doesn't quite give me the exact outcome. I am using the beginning of the video tutorial below. Its a lot lengthier of a process than I thought. A lot of fiddling around.
So far I have created the below following the beginning of the video tutorial which used the threshold to give a posterised effect and I settled for that as the closest I could get. I inverted it because I thought it looked better for the photo. But as you can see looked nothing like the above reference point. There is more grain in it.
Before and after