Double Exposure
This is one the children have a lot of fun with. With it you can turn your only child or friends, parents and children into twins. Or have that large family you always wanted. Invent jokes on the spot.
It is a very easy filter to use. You must make sure your cameras can take multiple exposures first.
Helpful Hints:
Do not forget to set your camera to Double exposure mode
An aperture setting of f/8 through to f/4 is good for wide angle lenses and f/22 through to f/8 for telephoto lenses. The lighting must be the same for both shots and a tripod is required for best results.