It's more obvious when you have larger distances involved. Look out the window in my pictures of Luca. This could be handy, for instance, when the background is really unattractive. Besides there are no negatives in digital photography : )
I did it, I did it! Still haven't cracked open the manual but picked the Av mode and changed the aperture randomly. I have a Canon EOS Digital Rebel XSi:
f/5 -- 1/50 sec -- ISO 640 -- 0 step -- 45 mm -- no flash, compulsory (don't know what most of that means)
This one is all blurry...is that because I may have moved the camera or is it the settings/aperture/complicated stuff?
f/22 -- 1/3 sec -- ISO 800 -- rest same as above
I had to add a third in case the above was my shaky hands trying to take a pic with the camera on the floor.
f/32 -- 1/2 sec -- ISO 800 -- rest same as above
So if my goal was a great photo of the ball...it would be the first pic that's best, right? Would you experts have wanted less or more foreground blurriness? I wasn't looking through the viewfinder on the first one (at least I don't think so, or maybe I already tossed those and in that one I was...I forgot!). Would you have aimed the lens differently? But if I wanted a photo of everything the third one would be best. However, the third one looks almost like there is no depth...just a ball superimposed on a doodle.
This first would be the one for the great photo of the ball. I would prefer less blur in the foreground because my eyes go to it which detracts from the goal of drawiing attention to the ball; that said, I do really like the pic!!. Also, I'm not sure what your lighting conditions were, but in good light you should try to keep your ISO to 100. The larger the ISO, the more noise you introduce to the photo.