Unable to transfer pictures from my Iphone4 to my Nexus S

I love the auto focus feature of my iPhone better than that of my nexus S.
I wish I can transfer the pictures I captured from my IOS device to my Android device without the use of computer.
I tried using Bluetooth but I can’t get it to work properly.
Does the operating system have an effect on this?
How can I get it to work?
Or at least transfer files.
