Isn't this photo just amazing? I adore it. The way the leaf is perfectly focused while the background is super blurry.
Soon I'll show you guys a similar photo I took like this. These photos you take with a tripod so that the camera doesn't move and there isn't a chance the photo will be blurry. ISO approximately 100-400 - the most important thing is the aperture which needs to be as "little" as the camera goes. If the object is close to the camera then the lens should't be zoomed into the object.