Pixels in Digital Photography
Digital photography became a major break-through in the history of pixel. Traditional film photography relied on grains of silver halide crystals to take images and digital cameras worked with photo-sensitive sensors that had millions light-sensitive pixels.
These pixels are organized in a grid on the camera sensor and capture light, which is then transformed into electrical signals. With the brightness of light hitting each pixel, it registers its quantity and with joint red green, blue filters in the sensor can capture colour details. So, digital images generated by cameras are actually grids of small pixels and each contributes to the total visual composition.
What is a Pixel?
A pixel is the smallest unit of a digital image or display and stands for “picture element.” It is a very small, isolated dot that stands for one color and plays the most basic part in digital images. Pixels when combined help to create the mosaic of colors and shapes contributing towards visual content being displayed on screens such as smartphones, computers TVs, etc., or any other digital devices that we interact with every day. Each pixel has certain distinctive features; for instance, its location within the image which is defined by coordinates (usually measured in terms of rows and columns) as well as color details, brightness degree, etc., and sometimes — transparency value.
In digital imaging, a grid of pixels can be seen and the combination of thousands or millions of such ‘pixels’ creates an overall visual representation that users see on their screens. The term pixels, which means picture units, came about when digital imaging technologies were developed in the mid-20th century. Pixels help to implement visual information into a digital standard with which computers and other equivalent electronic devices can process, store, and show images. An image resolution is based on the number of pixels it incorporates, and higher resolutions generally lead to more detailed images.