ULTRASONIC POLAROID / product design

The blinds would also want to keep a record of a precious memory. With a regular camera, this sounds somewhat ironic as the films and the pictures will mean something less to them.
When the photographer presses the first shutter, with an ultrasound the camera will calculate the distance between the subject and the lens. Then the picture will show as a dot on the panel back of the camera.
Using the panel, the photographer will check if he/she had captured the right moment and by pressing the second shutter, the picture will be printed out immediately just like how a Polaroid camera does.