Depth of Field tool?

[mr tommo]

I want to show some people the effects of DOF on an image. I'm sure in the past I remember seeing a photograph of some ducks in a line.

This tool allowed you to change the aperture and would show the changes it made to the same image.

 

[K.C. Leblanc]

No ducks, but this do-hicky should do what you need.

http://camerasim.com/camera-simulator/

 

[mr tommo]

Perfect thanks!