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The advent of digital photography also gave way to cultural changes in the field of photography. Unlike with traditional photography, dark rooms and hazardous chemicals were no longer required for post-production of an image — images could now be processed and enhanced from behind a computer screen in one's own home. This allowed for photographers to be more creative with their processing and editing techniques.

As the field became more popular, types of digital photography and photographers diversified. Digital photography took photography itself from a small somewhat elite circle, to one that encompassed many people. The camera phone helped popularize digital photography, along with the Internet , social media , [27] and the JPEG image format. Image sensors read the intensity of light, and digital memory devices store the digital image information as RGB color space or as raw data.

The two main types of sensors are charge-coupled devices CCD , in which the photocharge is shifted to a central charge-to-voltage converter, and CMOS or active pixel sensors. Except for some linear array type of cameras at the highest-end and simple webcams at the lowest-end, a digital memory device usually a memory card ; floppy disks and CD-RWs are less common is used for storing images, which may be transferred to a computer later.

Digital cameras can take pictures, and may also record sound and video. Some can be used as webcams , some can use the PictBridge standard to connect to a printer without using a computer, and some can display pictures directly on a television set.

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Similarly, many camcorders can take still photographs, and store them on videotape or on flash memory cards with the same functionality as digital cameras. Digital photography is one of the most exceptional instances of the shift from converting conventional analog information to digital information.

This shift is so tremendous because it was a chemical and mechanical process and became an all digital process with a built in computer in all digital cameras. The quality of a digital image is a composite of various factors, many of which are similar to those of film cameras.

Pixel count typically listed in megapixels , millions of pixels is only one of the major factors, though it is the most heavily marketed figure of merit. Digital camera manufacturers advertise this figure because consumers can use it to easily compare camera capabilities. It is not, however, the major factor in evaluating a digital camera for most applications. Resolution in pixels is not the only measure of image quality.

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A larger sensor with the same number of pixels generally produces a better image than a smaller one. One of the most important differences is an improvement in image noise. This is one of the advantages of digital SLR single-lens reflex cameras, which have larger sensors than simpler cameras so-called point and shoot cameras of the same resolution. This yields e. The pixel count quoted by manufacturers can be misleading as it may not be the number of full-color pixels.

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For cameras using single-chip image sensors the number claimed is the total number of single-color-sensitive photosensors, whether they have different locations in the plane, as with the Bayer sensor , or in stacks of three co-located photosensors as in the Foveon X3 sensor. However, the images have different numbers of RGB pixels: Bayer-sensor cameras produce as many RGB pixels as photosensors via demosaicing interpolation , while Foveon sensors produce uninterpolated image files with one-third as many RGB pixels as photosensors.

Comparisons of megapixel ratings of these two types of sensors are sometimes a subject of dispute. The relative increase in detail resulting from an increase in resolution is better compared by looking at the number of pixels across or down the picture, rather than the total number of pixels in the picture area. A measure of the comparative increase in linear resolution is the square root of the increase in area resolution, i.

Practical imaging systems both digital and film, have a limited " dynamic range ": the range of luminosity that can be reproduced accurately.

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Highlights of the subject that are too bright are rendered as white, with no detail; shadows that are too dark are rendered as black. The loss of detail in the highlights is not abrupt with film, or in dark shadows with digital sensors. Because sensor elements for different colours saturate in turn, there can be hue or saturation shift in burnt-out highlights. Some digital cameras can show these blown highlights in the image review, allowing the photographer to re-shoot the picture with a modified exposure. Others compensate for the total contrast of a scene by selectively exposing darker pixels longer.

The image sensor contains additional photodiodes of lower sensitivity than the main ones; these retain detail in parts of the image too bright for the main sensor.

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High-dynamic-range imaging HDR addresses this problem by increasing the dynamic range of images by either. Many camera phones and most digital cameras use memory cards having flash memory to store image data. XQD card format was the last new form of card, targeted at high-definition camcorders and high-resolution digital photo cameras. Most modern digital cameras also use internal memory for a limited capacity for pictures that can be transferred to or from the card or through the camera's connections; even without a memory card inserted into the camera.

Memory cards can hold vast numbers of photos, requiring attention only when the memory card is full. For most users, this means hundreds of quality photos stored on the same memory card. Images may be transferred to other media for archival or personal use. Cards with high speed and capacity are suited to video and burst mode capture several photographs in a quick succession. Because photographers rely on the integrity of image files, it is important to take proper care of memory cards.

Common advocacy calls for formatting of the cards after transferring the images onto a computer. However, since all cameras only do quick formatting of cards, it is advisable to carry out a more thorough formatting using appropriate software on a PC once in a while. Effectively, this involves scanning of the cards to search for possible errors.

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At the same time, many discount stores with photo labs introduced a "digital front end", allowing consumers to obtain true chemical prints as opposed to ink-jet prints in an hour. These prices were similar to those of prints made from film negatives. Some photofinishers have started offering prints with the same aspect ratio as the digital cameras record. In July , digital cameras entered the disposable camera market with the release of the Ritz Dakota Digital , a 1.


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Following the familiar single-use concept long in use with film cameras, Ritz intended the Dakota Digital for single use. When the pre-programmed picture limit is reached, the camera is returned to the store, and the consumer receives back prints and a CD-ROM with their photos. The camera is then refurbished and resold. Since the introduction of the Dakota Digital, a number of similar single-use digital cameras have appeared. Most single-use digital cameras are nearly identical to the original Dakota Digital in specifications and function, though a few include superior specifications and more advanced functions such as higher image resolutions and LCD screens.

However, the huge demand for complex digital cameras at competitive prices has often caused manufacturing shortcuts, evidenced by a large increase in customer complaints over camera malfunctions, high parts prices, and short service life. Some digital cameras offer only a day warranty. Since , digital cameras have outsold film cameras. Kodak announced in January that they would no longer sell Kodak-branded film cameras in the developed world.

In the same month, Konica Minolta announced it was pulling out of the camera business altogether. The price of 35mm and APS Advanced Photo System compact cameras have dropped, probably due to direct competition from digital and the resulting growth of the offer of second-hand film cameras. The decline in film camera sales has also led to a decline in purchases of film for such cameras. Within six months it filed for bankruptcy. Konica Minolta Photo Imaging, Inc.

In addition, by , Kodak employed less than a third of the employees it had twenty years earlier. It is not known if these job losses in the film industry have been offset in the digital image industry. Digital cameras have decimated the film photography industry through declining use of the expensive film rolls and development chemicals previously required to develop the photos.

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This has had a dramatic effect on companies such as Fuji , Kodak , and Agfa. Many stores that formerly offered photofinishing services or sold film no longer do, or have seen a tremendous decline. In , Kodak filed for bankruptcy after struggling to adapt to the changing industry. In addition, digital photography has resulted in some positive market impacts as well.