Autofocus for DOF

[Mtucker]

Within the Depth of Field section of the camera tab, I would love a checkbox that, when checked, causes the Focus Distance to update whenever the camera is moved, keeping the selected Focal Point always in focus. As it is now, I will often zoom in from an established camera view to inspect a material more closely, set up a new camera, etc. but because the focal distance does not update with camera movements, I find myself having to turn off DOF in order to see anything at my newly zoomed in view.  This feature would also be incredibly useful for animations. (For example one could set a logo to always be in focus as the camera dollies toward the product.)

Thanks!

[DMerz III]

Great idea, would be great to have the option to tie the focus point to an object, even an object that is not visible (like using an empty) in order to pinpoint exact where you want the focus to be by moving that invisible object.