Hi I'm expecting a new (for me) tablet tomorrow (Samsung galaxy note 10.1 edition 2014). What I'd like to do, although I don't think it's possible, is to have a semi opaque image overlaid on the camera view before I take the shot. The reason I'd like to do this is as follows: I'm involved in photo restoration & repairing/restoring vintage photos. My current project is to produce 'then & now' shots of streets & buildings & it's necessary to line up the new shot exactly with the old shot. So far I've used a print of the vintage photo & attempted to align the 2 shots by eye. This can be rather hit & miss so it would be great if, when taking the new shot to have a semi transparent view of the old one so that I can line them up more or less exactly. Here attached is an example: Does anyone know if or how this can be done?