1 Choose a smart site for your vegetable garden. 2  Container gardening for vegetables and herbs. 3  How to grow a hydroponic garden. 4  Smart fertilizer use: A vegetable garden begins with a soil management plan. 5  Caring for your soil tip sheet. 6  Prepare the smart vegetable garden.  Garden planning tip sheet.
Rack focus or Racking Focus is a very interesting effect that can be used to shift the attention of the audience from one thing to another. It changes the focus between something in the foreground and the distance. You might have something close on the left side of the screen and something far away on the right side.
Back-focusing and front-focusing is when the auto-focus consistently is slightly off in either direction. This problem has always existed as long as auto-focus has existed, but it has come into focus (no pun intended) with digital cameras where you can enlarge the image to pixel level and really see where the focus is. You can test this with a simple setup of a ruler and a box of matches, or any similar objects.