Camera app showing an image half-transparent in viewfinder
I'm searching for a Camera App, in which I can set an image to be shown half-transparent in the viewfinder as kind of a crosshair.
The use case: I have a number of historic photos of different places and want to take photos of the same places today. Not just generally the same places but trying to take the photos from the same observation point and with the same viewing angle as in the old photos. To achieve this I'd like to load the historic photo into the app to be shown half-transparent over the viewfinder to help me recreate viewpoint and angle as close as possible.
Does anyone know of a camera app featuring such possibility?