Challenge: Cheap Eats

Camera Data:
Sony A350
Lens: Tamron 70-200 Macro
Shutter Speed: 1/4000 second
Aperture: f/3.5
Focal Length: 160 MM
ISO: 800
I knew exactly what I wanted to take a photo of and how I wanted the pic to look as soon as I saw the challenge, but getting my kids to do what I needed was the most challenging part. I had my little guy hold the hose and my 8 year old hold the apple, but it was cold and windy. By the time I got the shot all three of us were wet and cold. Not to mention that I made them do it twice, because I thought I had the shot, but when I looked at it on the computer, it wasn't what I wanted. By the time I decided that we needed to do it again, one of the kids had eaten the apple. (Just their luck, I found another in the back of the frig :)
The problem I had with the shot was figuring out the right aperture and ISO to blur the background but keep the water and apple sharp. I started with ISO 400, but, then, I upped it to 800 with the second go around. (800 is about the highest ISO I use with my camera. Anything higher produces too much noise for my taste.) If I would have had cooperative assistants, I would have experimented more, changing the aperture to f4 or f5 to see what happened. I also wasn't, totally, happy with the way the apple was being held, but my little guys were doing the best they could :)