Here's some of my experiments with fake ttv.
My first ever ebay purchase, a kodak Duaflex from the UK,it should be here in a few weeks.The original versions were available from December 1947 - September 1950 in the US, and 1949-1955 in the UK. Finally I can take some real ttv photos instead of using a fakey.
Through the Viewfinder photography is defined as taking a picture of any subject through the viewfinder of any camera with another camera. The image captured through the ttv is not a clean sharp picture but instead highlight the dust, scratches and texture,giving it a black border.