Aperture suggestion

Some of you have mentioned that you're having some problems seeing the difference with the different aperture settings. Here is my suggestion --- line something up. You need some Depth of Field (DOF). Having something leading away will help you some more difference.

Here's some pics of the fence. I focused on the "C" everytime and took 3 pictures.

f22

f8

f2.8

And, if you can't find anything, find some random oranges and line them up on your trampoline. If you can't find 3, then find an orange ball (I know, ghetto!) :)

I focused on the middle orange everytime.

f2.8

f8

f22