Lens aperture is one of the key tools for photographers for adjusting the exposure and for achieving specific creative depth of field effects. The lens aperture is an adjustable hole created by a diaphragm within the camera lens. When you change the size of this hole, you change the amount of light allowed to pass […]
Exposure
Exposure is the science (and the art) of making sure the sensor gets exactly the right quantity of light to produce a good image. Exposure is adjusted using shutter speed (the length of the exposure), lens aperture (how much light is passed through) and ISO (the sensitivity setting of the camera). Camera's have light meters to estimate the correct exposure setting but it's sometimes necessary to override this with manual adjustments.
Camera shake and how to avoid it
Camera shake is blur caused by camera movement during the exposure. It happens with indoor shots or outdoor shots in poor lighting or at night, when the low light levels mean the camera uses a longer exposure and hence a slower shutter speed. The slower the shutter speed, the more likely it is the camera […]
Exposure and how it works
Exposure is all about making sure the sensor gets the right amount of light. Without camera exposure controls, pictures taken at night would be pitch black, and those taken in bright daylight might be burned out. There is actually a fairly narrow ‘window’ of light intensities which sensors can record, and real-world lighting conditions vary […]