Using Flash CS4 how can I create a function that will replicate the affects of different aperture settings on a camera. I want the user to be able to click on different 'focal points' of their picture and see how the aperture/depth of field would change depending on which focal point is in focus. In essence I want the blurring affect to move depending on where they click.
Also I was curious if anyone knows how to create a slider bar that would create the blurring affect of a low aperture on a camera. I am writing this program for my high school students to use in class - when they take a picture they upload it and look at what different apertures would do to their picture.