Changing angles and viewpoints when taking photographs creates different effects: Distance from the subject can change how much of the frame it fills, how its scale compares to its surroundings and ...

Focus means how sharp the image is. This can be used to emphasise a certain point - for instance by focusing on an object close to the camera or further away. This can create meaning in an image.

Inorganic LEDs are light-emitting diodes (LEDs) made from a crystalline semiconductor. The optical emission wavelength can be selected by varying material composition. Example active regions include ...