Ron Bucci Accurate exposure is important in producing a high-quality photograph, and it is critical when you use a slide film.
Exposure is the amount of light reaching the film.
Each film requires a specific amount of light to produce a picture of the proper brightness. How much light a film requires depends on its speed. The versatility of your camera enables you to shoot pictures at sunrise, during a blizzard or rainstorm, in your family room, or at a night baseball game. For such unusual lighting situations, a light meter is a must. Most 35 mm cameras have built-in meters.