SLR Camera Simulator

Want to play around with SLR Camera settings and see how it affects your photo, but without actually using an SLR? Well, you can do just that with the Online SLR Camera Simulator. This simple application allows you to choose the lighting, ISO, shutter speed and aperture. A great tool to teach someone the basics of photography. Website:

Shutter speed and aperture

Controlling the exposure. Both shutter speed and aperture affect the amount of light reaching the film. To get a correctly exposed negative, one that is neither too light nor too dark, you need to find a combination of shutter speed and aperture that will let in the right amount of light for a particular scene and film. PDF: Shutter speed and aperture