Exposure Management DSLR – How it can be effectively used to get quality photographs?
Exposure Management DSLR. The exposure values selected automatically by the camera can be superseded by the manual settings of exposures. The increase in exposure is to be used to advantage if the main subject in the photo frame is darker than the background while if background is darker than the subject then decrease in exposure value is required for desired results. In case of overexposed subjects in the photograph to be taken you will have to reduce exposure values.
For having the best results in the output photograph that is resulting images same as the subject, optimum light should fall on sensor. This optimum amount is called standard exposure and reproduces image with tones and details of the subject as seen through naked eyes. Not enough light turns entire image dark where the tone is lost that is underexposure. When light is in optimal amount, the subject is replicated with same tone and details as can be seen from naked eye, that’s standard exposure.
Exposure Management DSLR – Overexposure
The entire image turns whitish with tone and detail blown out on being exposed to too much of light, that’s overexposure. Each photographer has his or her perception which corresponds to optimal exposure. Now the question is whether optimal exposure is same as standard exposure? Normally optimal exposure and standard exposure are similar. However technically a subject has one standard exposure state but numerous optimal exposures that any photographer intends to have for a image.
Exposure Management DSLR – Light
The well exposed pictures can be produced when you make sure that right amount of light reaches the sensor. During exposure the accumulation of light on the camera’s sensor decides the type of image formed in terms of brightness, you have to adjust length of exposure as well as intensity of light with shutter speed and lens aperture of your camera. These computations are done automatically in digital camera.
Before you know about tonal range, you must have some idea of the terms involved in explaining it. Dynamic range in case of sensor in digital camera is numerically equal to largest signal produced by sensor divided by the smallest possible signal generated. The largest signal produced is dependent on full capacity of the pixel; more the capacity of pixel more is the largest signal produced. The lowest signal is same as noise level when sensor does not get any light.
Exposure Management DSLR – 50 Shades of Grey
Dynamic range is different from tonal range; there should not be any confusion among them. Tonal range is actually shades of grey between perfect black and perfect white. The number of tones required to express the dynamic range is called tonal range of digital picture. A picture having large dynamic range can possess narrow tonal range while a low dynamic picture will possess wide tonal range. Normally the photograph should be shot in midtone. Midtone describes those areas in tonal range which are almost in the middle. Generally your camera should work on standard grey tone about 18% grey. The level of brightness is to be adjusted to this level.
In next part the luminous distribution and bracketing in digital camera will be discussed. How these techniques will improve the quality of images and make you different in the field of photography as a photographer.
Tutorial Eleven –
Tutorial Nine –