Most Photographers use still cameras, artificial or natural lighting and light measuring instruments to capture images. They select the appropriate camera, the best lighting (eg flash or floodlight) and the appropriate lens, filter and film to best capture a moment. Photographers may also set up their own darkrooms in order to develop their films. For those who decide that photography is their angle, there are two main areas photographers work in. Commercial photographers shoot much of what we see in magazines, newspapers, catalogues, manuals, brochures, posters and billboards. They predominantly work for advertising and marketing agencies. Portrait photographers make sure that your shirt collar is straight, your hair is in place and your pose is spot on, before snapping away on occasions such as weddings, high school graduations or for family portrait sittings. Portrait photography is where most work is available.