Using Your Camera's Settings: Program Mode, Shutter Speed, and More
What would the photo look like if the camera were mounted on a tripod, though Find out by selecting the option marked Using tripod, and take the shot again. As you might expect, the background will be sharp, but the little girl will be blurry because she was around when you pressed the shutter release.
Want a sharp photo Back off on the aperture until the shutter speed is 1/60 second and you'll find the whole photo is uniformly sharp.
Keep Playing
There are other things you can do with CameraSim. For example, you could increase the ISO to add more light to the scene, and then re-try the f/36 scene to get a sharper background. That'll work, but varying the ISO will also let you see the relative increase in digital noise that higher ISO settings contribute to photos.
And while you're fooling around, click over to Manual control and try setting both aperture and shutter values yourself, and see how varying the lighting from Sunny to Dim Indoors affects exposure as well.