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"Digicam" redirects here. For the military camouflage method using micropatterns, see Digital camouflage.
Front and back of Canon PowerShot A95 (c.2004), a once typical pocket-sized compact camera, with mode dial, optical viewfinder, and articulating screen.

A digital camera is a camera that captures photographs in digital memory. Most cameras produced today are digital,[1] largely replacing those that capture images on photographic film. Digital cameras are now widely incorporated into mobile devices like smartphones with the same or more capabilities and features of dedicated cameras. While there are still dedicated digital cameras, many more cameras are now incorporated into mobile devices like smartphones.[2] High-end, high-definition dedicated cameras are still commonly used by professionals and those who desire to take higher-quality photographs.[3]

Back of Sony a7s III camera, LED screen on the settings page.

Digital and digital movie cameras share an optical system, typically using a lens with a variable diaphragm to focus light onto an image pickup device.[4] The diaphragm and shutter admit the correct amount of light to the image, just as with film but the image pickup device is electronic rather than chemical. Digital cameras can display images on a screen immediately after being recorded, and store and delete images from memory. Other capabilities of most modern digital cameras consists of recording videos with sound, cropping, and stitching photos all within camera.[5]

  1. ^ Musgrove, Mike (2006-01-12). "Nikon Says It's Leaving Film-Camera Business". Washington Post. Retrieved 2007-02-23.
  2. ^ Cooke, Alex (2017-10-30). "Nikon Closes China Camera Factory, Cites Smartphones as Cause". Fstoppers. Retrieved 2019-08-23.
  3. ^ Tarrant, Jon (2006-01-01), Tarrant, Jon (ed.), "Chapter 2 - Basic Features", Understanding Digital Cameras, Oxford: Focal Press, pp. 8–31, ISBN 978-0-240-52024-7, retrieved 2021-10-10
  4. ^ MakeUseOf: How does a Digital Camera Work; retrieved 2013-09-07
  5. ^ Tarrant, Jon (2006-01-01), Tarrant, Jon (ed.), "Chapter 15 - Optical Quality", Understanding Digital Cameras, Oxford: Focal Press, pp. 270–291, ISBN 978-0-240-52024-7, retrieved 2021-10-10

Digital single-lens reflex cameras (DSLR)

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Cutaway of an Olympus E-30 DSLR
Main article: Digital single-lens reflex camera

Digital single-lens reflex cameras (DSLR) is a camera with a digital sensor that utilizes a reflex mirror to split or direct light into the viewfinder to produce an image.[1] The reflex mirror finds the image by blocking light to the cameras sensor and then reflecting it into the camera's pentaprism which allows it to be seen through the viewfinder.[1] When the shutter release is fully pressed the reflex mirror pulls out horizontally below the pentaprism briefly darkening the viewfinder and then opening up the sensor for exposure which creates the photo. [1] The digital image is produced by the sensor which is an array of photoreceptors on a microchip capable of recording light values. Many modern DSLRs offer the ability for "live view" or the framing of the subject emitted from the sensor onto a digital screen.

The sensor also known as a full-frame sensor is much larger than the other types, typically 18mm to 36mm on the diagonal (crop factor 2, 1.6, or 1).[1] The larger sensor permits more light to be received by each pixel; this, combined with the relatively large lenses provides superior low-light performance. For the same field of view and the same aperture, a larger sensor gives shallower focus. DSLRs can equip interchangeable lenses for versatility by removing it from the lens mount of the camera, typically a silver ring on the front side of DSLRs.[2] These lenses work in tandem with the mechanics of the DSLR to adjust aperture and focus. Autofocus is accomplished using sensors in the mirror box and on most modern lenses can be activated from the lens itself which will trigger upon shutter release. [1]

Example of Camera Manufacturers

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List of digital camera manufacturers

There are many manufacturers that lead in the production of digital cameras (commonly DSLRs). Each brand embodies different mission statements that differ them from each other outside of the physical technology that they produce. While majority manufacturer share modern features amongst their production of cameras, some specialize in specific details either physically on camera or within the system and image quality.

A Nikon D200 camera with a Nikon 17-55 mm / 2,8 G AF-S DX IF-ED lens and a Nikon SB-800 flash. Flashes are used as attachment to a camera to provide light to the image, timed with the shutter of the camera.
Canon EF 70-200 f/2.8 lens mounted on a Canon 7D camera body. Lenses of varying lengths can be equipped onto main camera bodies to provide different perspectives for an image taken.

Notable Digital Camera Manufacturers

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References

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  1. ^ a b c d e Freeman, Michael (2011). The DSLR field guide : the essential handbook to getting the most from your camera. Burlington, Mass. : Focal Press,. pp. 3–15. ISBN [[Special:BookSources/9781136087011 113608701X 9780240817217 0240817214 9781136087028 1136087028 1-136-08701-X 0-240-81721-4 1-136-08702-8|9781136087011 113608701X 9780240817217 0240817214 9781136087028 1136087028 1-136-08701-X 0-240-81721-4 1-136-08702-8]]. {{cite book}}: Check |isbn= value: length (help); line feed character in |isbn= at position 14 (help)CS1 maint: extra punctuation (link)
  2. ^ "[Lesson 2] Knowing the Different Parts of the Camera". SNAPSHOT - Canon Singapore Pte. Ltd. Retrieved 2021-11-01.
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