From 1981 Japan image industry manufacturer Sony unveils world's first electronic imaging camera — Martha Vika "MAVICA", to the 1984 United States and Japan's press start using digital cameras used in the news, and has achieved great success, with digital phase after 10 years of development, its production and sales has been completely beyond the traditional camera.
21st century images entered a digital era. Digital technology has not only changed the video industry, but also changed our existing life. Me more and more photographers purchase a digital camera in hand, but everyone willing and able to recite all the advantages of digital cameras and easy in a normal family, friends, travel, and other wonderful photos, now you only need a digital camera, an e-mail, you can quickly share with friends and family to your joy and happiness. Despite the popularity of digital cameras is very extensive, but a digital camera application which some minor issues and concepts, but also very clearly, in a fuzzy State.Contact with a digital camera, you must have heard of JPEG, TIFF, and other terms, simply put is taken out of the digital camera photo storage format that corresponds to the file name suffix is * .jpg, .tif, in fact, many * digital cameras also provide RAW digital camera formats, in fact, the original record strictly speaking is not a RAW image format, you cannot directly edit the RAW is the camera's CCD or CMOS optical signal in will be converted to electrical signals of the original data records, simply records the camera internal no processing of image data and stores it.
RAW is untreated, or uncompressed format, you can put the concept into the "original RAW image coding data" or more image called "digital negatives", it is likened to "negative" is because want to get through the "film" is the perfect photo, need to post the work of the "electronic darkroom". RAW image in TIFF format, is a "no loss" data format, for 500 mega pixel digital camera, a RAW file saved 500 000 points of sensitive data. The TIFF format in the camera's internal it worked, like say SONY cameras to colourful, Fuji camera in portrait grasping the quite steady on color, these are image processor to color special processing of the results. While the RAW format is the "authentic" untreated data, like we use JPEG, TIFF and other file is a digital camera in RAW format, adjust the white balance and saturation parameter, the resulting image data.Digital camera commonly used JPEG and TIFF formats are familiar, I just do a simple introduction, the focus was not always applied RAW formats, through application of RAW format software, picture adjustments, storage, to the latter part of the movie, make them one by one.
TIFF is a non-distortion of the compression format (maximum 2-3 times more compression ratio).
This compression is a compression of the file itself, that is, to file certain repetitive information using a special way record files to completely restore, can keep the original image colors and layers, the advantage is that the image quality is good, compatibility than RAW format but occupy a large space.JPEG is a can provide superior image quality for file compression format that is set to JPEG format photographs adopted in the camera's internal image processor has finished processing, you can direct the movie.
But in most digital cameras, the "processing" feature is still very great, and I can responsibly say that JPEG is a worthy believe storage format. Although the JPEG is a lossy compression format, under normal circumstances, provided that they do not pursue the quality of the image is too fine (ordinary consumer-level DC also difficult about the pursuit of images and to), you will find JPEG has many advantages worth considering, so-called compression format is JPEG image data, obtained a by removing redundant data, reduce the size of its stockpile, but lost in the compression process of original image data is unrecoverable, usually the compression ratio of 10: 1 and 40: 1, JPEG can save a large part of the memory card space, thereby greatly increasing the number of pictures shot, and accelerates the speed of photo storage and also accelerated with the continuous shooting speed, so is widely used in news photography. With so many benefits, for most people and ordinary families, low compression (high quality) of JPEG files a good choice.Now I focus on said that many people are not very familiar with RAW storage format.
Now more and more digital cameras have begun to use RAW format shooting photos, RAW file is "blank", we can adjust the color temperature of arbitrary and white balance, creative similar "darkroom" production, without loss of image quality, keep the image quality. Camera RAW by shooting a scene, only records the aperture, shutter, focal length, ISO and other data, has not taken any pictures to image processing, save the complete data, RAW format it can give each pixel depth of the digital photographer's creative retains a lot of space, the photographer through late on image color adjustment, improve the whole photo image color quality, storage file size only corresponds to about half of TIFF files from storage space saving sense than TIFF there is a distinct advantage. How we can get to the RAW format pictures, first of all you must have a supported digital camera RAW formats such as SONY's flagship product, prior to the shooting DSC-R1 digital camera RAW image format to the format you have set up the RAW format, the camera apart from ISO, shutter speed, Aperture, focal length, the other will be set to RAW files do not work, because the color space, sharpening value, white balance, contrast, noise reduction, all operations will be in a computer controlled by yourself. That's why we are shooting in RAW format pictures cannot be opened directly in computer browser? this is because the RAW data as there is no image processing, there is no lift in the normal common image file, so I want to open a RAW file, you can only use a digital camera that comes with the RAW data processing software, convert it to a common format such as TIFF. As a result of various manufacturers CCD or CMOS arrangements and transformation and image processor operation methods, RAW data records differently, so it is only through manufacturers provide data processing software to convert them into common formats. If you just want to browse pictures in RAW format, just downloading a RAW Image Thumbnailer software, installed after the ability to easily browse RAW format picture, and display speed. Photoshop CS8.0 version can open a different brand of camera RAW formats, but because of the brand new camera listing too fast, so you will need the Adobe official website to download the appropriate camera plug-ins, we commonly known as the "patch", a good patch CS can open RAW files. But it is recommended that you use the original manufacturers provide data processing software, because the camera manufacturers will not arrange the CCD and operations, and other core technologies available to Adobe, Photoshop is the solution for data method to open the RAW format in the inverse operation of the process there will be some errors, such as the Olympus of the RAW format in Photoshop when you clear the picture to open a whole color bias "commodities", white partial rendering is pink. But Al-Khasawneh, Leica and other brands using Adobe's DNG format RAW files standard, does not require any plug-ins can be opened directly in Photoshop. At present relatively large caikuodian today jiecheng, Oriental Pearl Tower and constant HSBC, today's Digital Studio on RAW format files or you cannot direct the opened, you can only start at home put RAW format into a common format such as TIFF, JPEG and then go to caikuodian out. In order to experience more exciting digital life, it is recommended that you buy a professional photo printer, the printer uses the eight colors: red, blue, bright colors, yellow, magenta and cyan, photo black, matte black, photo rich layers, color and exquisite, excellent image performance, Visual picture outfit is too much (also eliminates the time running caikuodian).
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