Digital cameras first appeared in the United States. More than 20 years ago, the United States used it to transmit photos via the satellite to the ground. Later, digital photography was transformed into civilian use and the scope of application was continuously expanded. Currently, it has become very popular in Europe and the United States. As one of the new input devices for computer graphics, it will be developed in sync with computers and will soon become a mainstream imaging application technology. Its price has been declining, and the image quality has continuously improved, which makes digital cameras attractive to more and more business users and amateurs.
So what is a digital camera? Digital cameras, also called digital cameras, are optical, mechanical, and electrical products. Its core component is a CCD (Charge Couple Device) image sensor. It is made of a high-sensitivity semiconductor material. Under the effect of light, the intensity of light can be converted into the accumulation of charge, and then converted into a digital signal by an analog-to-digital conversion chip. The digital signal is compressed by the camera's internal Flash memory or built-in hard disk card saves, so data can be easily transmitted to the computer, and with the help of computer processing, according to the need to modify the image.
Its greatest advantage lies in the digitization of information. Since digital information can be transmitted in real time through digital communications networks throughout the world, real-time delivery of images can be achieved. Its appearance, some functions, and operation are similar to those of an ordinary 35mm camera, but it is not necessary to focus and set the shutter speed. In addition, there are several differences between digital cameras and traditional cameras:
(1) It takes about 1.5 seconds to delay before pressing the shutter and the digital camera actually records the image. This is due to the need for optical sensors to read scenes, high-speed aperture or change the shutter speed, check for automatic gathering, and turn on the flash.
(2) Different storage media. Images taken by digital cameras are stored digitally on magnetic media, while images from traditional cameras are chemically recorded on silver halide films.
(3) The image quality is different. The crystal lattice of an image captured with a conventional camera is much smaller than the number of pixels captured by the CCD. Second, the traditional camera's silver halide film can capture continuous tones and colors, and the digital camera's acquisition principle can only be light or dark; in addition, the digital camera's CCD will lose some details in the darker or brighter light This phenomenon is called "clipping" and is sometimes difficult to correct; it is suitable for monotone light, photographing with a flash or HMI light source, and will give satisfactory results. At the same time, the resolution of a typical 35mm traditional camera can easily reach 2500 dpi, but digital cameras cannot achieve such a high resolution.
(4) The input and output methods are different. The image shot by the digital camera can be directly input into the computer, processed and printed out. The image of a traditional camera must be washed in a darkroom. To be processed, it must be entered into the computer through a scanner. The quality of the scanned image must be affected by the accuracy of the scanner. In this way, even if it is of high quality, the image obtained after scanning is far behind.
Digital cameras can easily capture everything in nature as digital images that can be directly processed by computers and can be displayed on television. Many computer or home appliance manufacturers such as HP, Sony, Apple, Sharp and others are optimistic about this market and are racing to produce digital cameras. It is no longer just a special product of photographic equipment manufacturers such as Kodak or Fujitsu. At present, the digital camera market in Japan has continued to increase in popularity. In 1997, the market scale reached 2 million units. Several Japanese photographic equipment companies are working hard to prepare for the elimination of silver halide film within five years. It is predicted that in the next 10 years, most users around the world will use digital cameras. Many multinational companies compete in the digital camera market, and it is precisely their outstanding advantages that can benefit users in terms of speed, convenience, cost reduction, and efficiency. Digital cameras recognized as outstanding brands include: Olympus D-300L, Minolta Dimage V, Kodak DC120, Canon Powershot60 0, Epson Photo PC-500, Sony DSC-F1, Fuji DS7, Agfa ePhoto307, Casio QV-300, Toshiba PDR- 2 etc. The price is between 299 and 999 USD.
There is no digital camera manufacturer in China yet, but the number of dealers of foreign brands is increasing day by day. Most of these dealers also distribute printers, scanners and other products; the longest distribution period is only one and a half years. From the point of view of the distribution brand, it mainly includes brand-name products, including Canon, Kodak, AGFA, Olympus, Fujitsu, Casio and Epson. The Qiao brand was the first to promote Kodak, followed by Canon and Olympus and Epson.
Surveys have shown that digital cameras have obvious advantages in terms of functionality: they are easy to edit on a computer, have a large amount of memory, are easy to transmit, and can be stored for a long time; as long as they have appropriate output devices, the output is very convenient and fast. These advantages are common to cameras. Unmatched. However, at the same time, there are still some obvious deficiencies in digital cameras: high prices are the primary issue, and image quality needs to be improved. In addition, the shooting of digital cameras is limited by the environment, the long exposure time and the inconvenient operation also restrict its popularity.
In general, price is the primary factor hindering the rapid development of the digital camera market in China. The price of a digital camera keeps most ordinary people away. Secondly, the domestic digital camera market has just started, and the product performance needs to be improved. It will inevitably involve the problems of the after-sales service and related products. The limitations and operational difficulties of the domestic digital camera market also increase the distance between it and people. In addition, promotional activities and forms of products are also a key part of the popularity of digital cameras.
The promotion of a new technology and new product requires a complicated and arduous process. The first is people's understanding and understanding of it, followed by people's acceptance of it. Although domestic distributors or agents have adopted a variety of promotional methods, such as advertising, exhibitions, and sales of prizes, most people do not have a clear concept for digital cameras, and they do not fully realize that it is in real life. The important position in the work. At present, people's understanding of digital cameras is nothing more than a few well-known brands such as Canon, Kodak, and Epson. Even if there is a purchase plan, but also for the specific purchase of what products are also numerous; in the choice of the brand, a considerable proportion of potential users are still indecisive. This reflects that digital cameras are still only in the perception stage in the hearts of Chinese people. To achieve universality, it still needs the unremitting efforts of manufacturers and merchants.
So what is a digital camera? Digital cameras, also called digital cameras, are optical, mechanical, and electrical products. Its core component is a CCD (Charge Couple Device) image sensor. It is made of a high-sensitivity semiconductor material. Under the effect of light, the intensity of light can be converted into the accumulation of charge, and then converted into a digital signal by an analog-to-digital conversion chip. The digital signal is compressed by the camera's internal Flash memory or built-in hard disk card saves, so data can be easily transmitted to the computer, and with the help of computer processing, according to the need to modify the image.
Its greatest advantage lies in the digitization of information. Since digital information can be transmitted in real time through digital communications networks throughout the world, real-time delivery of images can be achieved. Its appearance, some functions, and operation are similar to those of an ordinary 35mm camera, but it is not necessary to focus and set the shutter speed. In addition, there are several differences between digital cameras and traditional cameras:
(1) It takes about 1.5 seconds to delay before pressing the shutter and the digital camera actually records the image. This is due to the need for optical sensors to read scenes, high-speed aperture or change the shutter speed, check for automatic gathering, and turn on the flash.
(2) Different storage media. Images taken by digital cameras are stored digitally on magnetic media, while images from traditional cameras are chemically recorded on silver halide films.
(3) The image quality is different. The crystal lattice of an image captured with a conventional camera is much smaller than the number of pixels captured by the CCD. Second, the traditional camera's silver halide film can capture continuous tones and colors, and the digital camera's acquisition principle can only be light or dark; in addition, the digital camera's CCD will lose some details in the darker or brighter light This phenomenon is called "clipping" and is sometimes difficult to correct; it is suitable for monotone light, photographing with a flash or HMI light source, and will give satisfactory results. At the same time, the resolution of a typical 35mm traditional camera can easily reach 2500 dpi, but digital cameras cannot achieve such a high resolution.
(4) The input and output methods are different. The image shot by the digital camera can be directly input into the computer, processed and printed out. The image of a traditional camera must be washed in a darkroom. To be processed, it must be entered into the computer through a scanner. The quality of the scanned image must be affected by the accuracy of the scanner. In this way, even if it is of high quality, the image obtained after scanning is far behind.
Digital cameras can easily capture everything in nature as digital images that can be directly processed by computers and can be displayed on television. Many computer or home appliance manufacturers such as HP, Sony, Apple, Sharp and others are optimistic about this market and are racing to produce digital cameras. It is no longer just a special product of photographic equipment manufacturers such as Kodak or Fujitsu. At present, the digital camera market in Japan has continued to increase in popularity. In 1997, the market scale reached 2 million units. Several Japanese photographic equipment companies are working hard to prepare for the elimination of silver halide film within five years. It is predicted that in the next 10 years, most users around the world will use digital cameras. Many multinational companies compete in the digital camera market, and it is precisely their outstanding advantages that can benefit users in terms of speed, convenience, cost reduction, and efficiency. Digital cameras recognized as outstanding brands include: Olympus D-300L, Minolta Dimage V, Kodak DC120, Canon Powershot60 0, Epson Photo PC-500, Sony DSC-F1, Fuji DS7, Agfa ePhoto307, Casio QV-300, Toshiba PDR- 2 etc. The price is between 299 and 999 USD.
There is no digital camera manufacturer in China yet, but the number of dealers of foreign brands is increasing day by day. Most of these dealers also distribute printers, scanners and other products; the longest distribution period is only one and a half years. From the point of view of the distribution brand, it mainly includes brand-name products, including Canon, Kodak, AGFA, Olympus, Fujitsu, Casio and Epson. The Qiao brand was the first to promote Kodak, followed by Canon and Olympus and Epson.
Surveys have shown that digital cameras have obvious advantages in terms of functionality: they are easy to edit on a computer, have a large amount of memory, are easy to transmit, and can be stored for a long time; as long as they have appropriate output devices, the output is very convenient and fast. These advantages are common to cameras. Unmatched. However, at the same time, there are still some obvious deficiencies in digital cameras: high prices are the primary issue, and image quality needs to be improved. In addition, the shooting of digital cameras is limited by the environment, the long exposure time and the inconvenient operation also restrict its popularity.
In general, price is the primary factor hindering the rapid development of the digital camera market in China. The price of a digital camera keeps most ordinary people away. Secondly, the domestic digital camera market has just started, and the product performance needs to be improved. It will inevitably involve the problems of the after-sales service and related products. The limitations and operational difficulties of the domestic digital camera market also increase the distance between it and people. In addition, promotional activities and forms of products are also a key part of the popularity of digital cameras.
The promotion of a new technology and new product requires a complicated and arduous process. The first is people's understanding and understanding of it, followed by people's acceptance of it. Although domestic distributors or agents have adopted a variety of promotional methods, such as advertising, exhibitions, and sales of prizes, most people do not have a clear concept for digital cameras, and they do not fully realize that it is in real life. The important position in the work. At present, people's understanding of digital cameras is nothing more than a few well-known brands such as Canon, Kodak, and Epson. Even if there is a purchase plan, but also for the specific purchase of what products are also numerous; in the choice of the brand, a considerable proportion of potential users are still indecisive. This reflects that digital cameras are still only in the perception stage in the hearts of Chinese people. To achieve universality, it still needs the unremitting efforts of manufacturers and merchants.
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