What Is a Digital Camera ?
A digital camera or digicam is a camera that captures photographs in digital memory. Most cameras produced today are digital. While there are still dedicated digital cameras, many more are now incorporated into devices ranging from mobile devices to vehicles. However, high-end, high-definition dedicated cameras are still commonly used by professionals.
Digital and movie cameras share an optical system, typically using a lens with a variable diaphragm to focus light onto an image pickup device. The diaphragm and shutter admit the correct amount of light to the imager. Just as with film but the image pickup device is electronic rather than chemical. However, unlike film cameras, digital cameras can display images on a screen immediately after being recorded, and store and delete images from memory. Many digital cameras can also record moving videos with sound. Some digital cameras can crop and stitch pictures and perform another elementary image editing.
Different Types of Digital Camera
- Compacts: Compact cameras are intended to be portable (pocketable) and are particularly suitable for casual “snapshots”. Many incorporate a retractable lens assembly that provides optical zoom. In most models, an auto actuating lens cover protects the lens from elements. Most ruggedized or water-resistant models do not retract, and most with superzoom capability does not retract fully.
- Rugged compacts: Rugged compact cameras typically include protection against submersion, hot and cold conditions, shock and pressure. Terms used to describe such properties include waterproof, freezeproof, heatproof, shockproof and crushproof, respectively.
- Action cameras: GoPro and other brands offer action cameras which are rugged, small and can be easily attached to a helmet, arm, bicycle, etc. Most have a wide angle and fixed focus and can take still pictures and video, typically with sound.
- 360-degree cameras: The 360-degree camera can take a picture or video 360 degrees using two lenses back-to-back and shooting at the same time. Some of the cameras are Ricoh Theta S, Nikon Keymission 360 and Samsung Gear 360.
- Bridge cameras: Bridge cameras physically resemble DSLRs and are sometimes called DSLR-shape or DSLR-like. They provide some similar features but, like compacts, they use a fixed lens and a small sensor. Some compact cameras have also PSAM mode. Most use live preview to frame the image. Their usual autofocus is by the same contrast-detect mechanism as compacts, but many bridge cameras have a manual focus mode, and some have a separate focus ring for greater control.
By Hexaresearch Report The global digital camera market is expected to reach USD 28.71 billion by 2025, influenced by a range of radically evolving trends regarding picture quality, lenses, zooming, photo accessories, and other features. An introduction of digital action camera with 4K and improved 360° video capturing are expected to boost the global market. For instance, in 2016, Nikon launched 4K, 360-degree action camera to enter in action segment market. It is wearable action digicam, capable of filming a 306-degree video with the 4K high definition.
The global tourism market size was estimated over USD 7.5 trillion in 2016 and is projected to increase at a CAGR of over 3% over the next eight years. As consumers prefer digital cameras over smartphones while traveling and during holidays owing to its ability to provide high pixel photos, the growth of the tourism industry is expected to augment the demand for digital devices over the projected period.