Camera Offset

[jscmidt]

Is your feature request related to a problem? Please describe.
Hi,
At first, many Thanks for this great Projekt.
I just have one idea to improve it (for me):
My camera, an old Nikon, always needs some time before taking a picture. That means that the Countdown "Cheese" is displayed for about three seconds before my camera makes the picture, even if I set the cheese-timer to 0. If I set it to 1, "cheese" is displayed for four seconds and so on.

Describe the solution you'd like
For me it would be perfekt to have the ability to set a camera-offset in the admin panel. So in my example, I could set this offset to three seconds, so that PhotoBooth tells the camera to make a picture while the countdown is still running.

Describe alternatives you've considered
Another possibility with the same effect would that you can set the cheese-timer value negativ. So in my example, I could set the cheese timer to -2000 when I want to display it for one second. But I think that's more confusing than the camera-offset.