Exposure Metering
Exposure metering (often abbreviated as metering only), the method of light measurement
1. Average metering, measuring the average light the entire frame.
2. Center-weighted average metering, measuring the average light with emphasis on the middle.
3. Matrix / Evaluative metering, Measuring light in various parts of the frame, to then be calculated with certain automated methods.
4. Spot metering, measuring the light only on a small section in the center of the frame only. Exposure compensation, 18% gray. Exposure meter is always measuring the light and yielding measurements so that the light image produced ranges at 18% gray.
So if we shoot a piece of white cloth and use the exposure settings as shown by the meter, then the white cloth will become gray in the photo. To overcome this we have to do exposure compensation. Exposure so we added a white cloth. Under exposured, images are too dark because of lack of exposure.
Over exposured, images are too bright because of excess exposure Terms stop. Rose 1 stop, meaning that exposure was increased to 2 times. Ride 2 stops, meaning that exposure was increased to 4 times. Down 1 stop exposure be lowered to half time. Down 2 stops exposure was reduced to 1 / 4 times. 1 stop increase in aperture as follows: f/22, f/16, f/11, f / 8, f / 5.6 f / 4, f / 2.8 f / 2. The difference f-stop number of each is 0.7 times (1/Ö2). Increase of 1 stop on the district. shutter as follows: 1 / 2000, 1 / 1000; 1 / 500, 1 / 250, 1 / 125, 1 / 60, 1 / 30, 1 / 15; 1 / 8, 1 / 4, 1 / 2; 1. Different speed of each stop is 2 times. DOF, depth of field, depth of field. DOF is the sharp area around the focus.
The depth of field is influenced by a large aperture, focal length, and distance to the object. 1. Aperture, the larger the aperture (smaller f number) then the DOF will be more shallow / narrow. 2. Focal length (real), the focal length, DOF more shallow / narrow. 3. The distance to the object, the closer the distance to the object then the DOF more shallow / narrow. Election DOF If a narrow DOF, FG and BG will blur. Narrow DOF used if we want to isolate / highlight the object from the surrounding environment for example on portrait photos or photos of flowers.
If the DOF wide, FG and BG looks sharper. DOF wide use if we want almost all parts of the image appears sharp, as in landscape photos or photo journalism. Shooting mode Auto mode, point and shoot mode, just aim and snap.
1. Full auto, the camera determines all the parameters.
2. Portrait, the camera uses the largest aperture to narrow DOF.
3. Landscape, the camera uses the smallest aperture.
4. Nightscene, use a slow speed and flash to capture the object and the BG as well.
5. Fast shutter speed
6. Slow shutter speed
Creative zone
1. P, program AE. Similar to auto mode with more control. With this mode we can control the exposure compensation, ISO, metering mode, Auto / manual focus, white balance, flash on / off, and continues shooting.
2. Tv, shutter speed priority AE. We determine the speed, the camera will calculate the appropriate aperture. 3. Av, aperture priority AE. We determine the aperture, the camera set the speed.
4. M, manual exposure. We are determining the aperture and speed manually. Composition and Angle Composition is the placement of objects in a photo frame Angle is the angle shooting, from the bottom, top, or parallel. The composition and angle is more related to the art of photography. Factors photographer tastes great influence.
