Camera Exposure
por Miriah Rivera
1. Shutter Speed
1.1. 1 - 30+ seconds
1.2. 2 - 1/2 second
1.3. 1/2 to 1/30 second
1.4. 1/50 - 1/100 second
1.5. 1/250 - 1/500 second
1.6. 1/1000 - 1/4000 second
2. Camera Exposure Modes
2.1. Exposure Mode; How It Works
2.2. Auto () Camera automatically selects all exposure settings.
2.3. Program (P) Camera automatically selects aperture & shutter speed; you can choose a corresponding ISO speed & exposure compensation. With some cameras, P can also act as a hybrid of the Av & Tv modes.
2.4. Aperture Priority (Av or A) You specify the aperture & ISO; the camera's metering determines the corresponding shutter speed.
2.5. Shutter Priority (Tv or S) You specify the shutter speed & ISO; the camera's metering determines the corresponding aperture.
2.6. Manual (M) You specify the aperture, ISO and shutter speed — regardless of whether these values lead to a correct exposure.
2.7. Bulb (B) Useful for exposures longer than 30 seconds. You specify the aperture and ISO; the shutter speed is determined by a remote release switch, or by the duration until you press the shutter button a second time.
2.8. Portrait Camera tries to pick the lowest f-stop value possible for a given exposure. This ensures the shallowest possible depth of field. Landscape Camera tries to pick a high f-stop to ensure a large depth of field. Compact cameras also often set their focus distance to distant objects or infinity. Sports/Action Camera tries to achieve as fast a shutter speed as possible for a given exposure — ideally 1/250 seconds or faster. In addition to using a low f-stop, the fast shutter speed is usually achieved by increasing the ISO speed more than would otherwise be acceptable in portrait mode. Night/Low- light Camera permits shutter speeds which are longer than ordinarily allowed for hand-held shots, and increases the ISO speed to near its maximum available value. However, for some cameras this setting means that a flash is used for the foreground, and a long shutter speed and high ISO are used expose the background. Check your camera's instruction manual for any unique characteristics.
3. Aperature
3.1. f top value
3.1.1. Aperture Setting, Relative Light Example, Shutter Speed
3.1.2. f/22 1X 16 seconds
3.1.3. f/16 2X 8 seconds
3.1.4. f/11 4X 4 seconds
3.1.5. f/8.0 8X 2 seconds
3.1.6. f/5.6 16X 1 second
3.1.7. f/4.0 32X 1/2 second
3.1.8. f/2.8 64X 1/4 second
3.1.9. f/2.0 128X 1/8 second
3.1.10. f/1.4 256X 1/15 second
3.2. Wide Aperature
3.3. Narrow Aperature
3.3.1. dad