What is a digital camera

Definition

A digital camera allows you to take photos that can be viewed and printed using a computer.
Most include a liquid crystal display (LCD) type screen, which you can use to preview and view photos.

The resolution of a digital camera is limited by the camera’s sensor (usually a CCD or CMOS sensor) that responds to light signals, replacing the work of film in traditional photography. The sensor is made up of millions of cubes that charge in response to light. The resulting number of pixels in the image determines its size. For example, an image that is 640 pixels wide by 480 pixels high will have 307,200 pixels, or approximately 307 kilopixels; An image that is 3,872 pixels high by 2,592 pixels wide will have 10,036,224 pixels, or approximately 10 megapixels.

They include a cable that allows you to connect the camera to a port. Allowing to transfer the photographs.
They store pictures until they are transferred to a computer. Most have built-in or removable memory.

Removable memory: store photos on a memory card. Some store them on a regular floppy disk that fits inside it. A memory card or floppy disk can be replaced when it is full.

Built-in memory: store at least 20 photos. Once it is full, they are transferred to the computer.

Modern compact digital cameras are generally multifunctional and contain some devices capable of recording sound and/or video in addition to photos. The formats most used by digital cameras to store images are JPEG and TIFF. The formats for video are AVI, DV, MPEG, MOV (often with motion JPEG), WMV, and ASF (basically the same as WMV).

Types

  1. compact camera
  2. Rugged compact camera
  3. 360 degree camera
  4. modular camera
  5. Single Lens Reflex (SLR) Camera
  6. Digital Single Lens Reflex (DSLR) Camera
  7. Single Lens Translucent Digital Camera (DSLT)
  8. bridge camera
  9. digital rangefinder camera
  10. line scan camera

Advantages to using a digital camera

Below are the key advantages that make digital cameras a popular choice compared to film cameras.

LCD screen

The LCD screen mounted on the back of a digital camera allows users to view their photos and videos immediately after they are taken. The LCD screen can also make it easier to frame your images.

Storage

A digital camera can store thousands of images, instead of just 36 images.

Image Development

Digital camera images can be developed just like on a standard camera, but you can pick and choose which images to develop instead of having to do the entire roll of film.

Size

Because a digital camera doesn’t need a place for film (not an SLR), it takes up much less space and can be easily carried in your pocket or bag.

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