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Saturday, November 8, 2008

Quick Black and White Photography Tips

By SFXsource

Though color photography is quite common, black and white photography is often a great choice for exploring your creativity. This article lists quick tips for black and white photography.

1. There are a number of different file formats [negative sizes are listed]: 35mm (1" x 1"), medium format- 120 (2" x 2 "), and large format (4" x 5"). Beginning photographers generally use a 35mm SLR (single-lens reflex) camera. This type of camera lets the photographer view and focus the subject directly through the lens.

2. There are different film speeds for different situations; film speeds are rated by an ASA (American Standards Association) number. For brightly lit subjects, a slow film such as 32 ASA is used; slow film produces fine grain negatives. Outdoor photographers will typically use a medium film speed such as 125 ASA, and that produces medium grain negatives. A fast film speed, such as 400 ASA is best for indoor use, and produces coarse grain negatives.

3. Aperture settings control the amount of light entering the lens. A measurement of the size of the lens opening is called F-stop. A small F-stop is a bigger opening exposing the film to more light. A large F-stop is a smaller opening and decreases the amount of light reaching the film. F-stop ranges: 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22.

4. There are different sized lenses, and they are distinguished by focal length (measured in mm). A wide angle view corresponds to a short focal length. A narrow angle view corresponds to a long focal length. A few lens types and focal lengths: normal (50mm), wide angle (21-35mm), and telephoto (105-300mm).

5. Shutter speed refers to the length of time the film is exposed to light. A fast shutter speed means the length of exposure time is short. A slow shutter speed means the length of exposure time is long. Shutter speeds: B, T, 2, 4, 8, 15, 30, 60, 125, 250, 500, 1000. Shutter speed time can be better understood if you place a 1 over the number to turn it into a fraction. When you place a 1 over the 2, that means the shutter speed is a second.

6. The B stands for bulb, and the T stands for time. Bulb means that the shutter will stay open for the amount of time you are pressing the button down. Time will keep the shutter open until you press the button again.

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