Canon EOS 20Da Instruction Manual

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Contents

Canon EOS 20Da Instruction Manual Manual pdf 126 page image

12512345IntroductionContents ata GlanceBasicOperationAdvancedOperationAdvancedImage Editingand PrintingEditingJPEG/TIFFImagesIndexProcessingLarge Numbersof ImagesReferenceGlossaryRAW imageEOS DIGITAL camera RAW images are recorded in an uncompressed14bit or 12bit format.Because RAW images are special images in an undeveloped status,you need software with development processing functions such as DPPin order to view them. The advantage of the undeveloped RAW imagesis that you can make a variety of adjustments to RAW images withalmost no deterioration of the image.* “RAW” meaning “in a natural condition” or “not processed or refined”.JPEG imageThe most ordinary image in non-reversible compressed 8bit format.The advantage of this is that by saving at a high compression rate, thefile size can be small, even for image data that has a high pixel count.Because during saving and compression part of the data is thinned outto make the file size small, every time you edit or save, the imagedeteriorates.With DPP, even if you repeat editing/saving, only the recipe data ismodified, and no overwriting or compression occurs so the originalimage data does not deteriorate.* JPEG is an abbreviation of “Joint Photographic Experts Group”.TIFF imageBitmap-format image recorded in a 8bit/16bit uncompressed format.Because TIFF images are in uncompressed format, they are suitable forsaving an image while maintaining the original high image quality.* TIFF is an abbreviation of “Tagged Image File Format”.RecipeThe “Image processing conditions information” for RAW images that canbe edited in DPP is called a “recipe”.Further, in DPP, you can perform image editing on JPEG and TIFFimages that use “recipes” as with RAW images.bit numberBinary unit of information volume in the color of an image. The numbershows the number of bits per pixel.The larger the number of bits, the more the color numbers and thegradation becomes smoother. A one-bit image is a black-and-whiteimage.Color Management System (Color Matching)Digital cameras that shoot images, monitors that display images, andprinters that print images each have a different way of creating color. Forthis reason, there may be a difference between the color of an imagewhen viewed on a monitor and when printed.A color management system is a system for managing color in order tobring these colors closer together. With DPP, you can more closelymatch color between different devices using ICC profiles betweendifferent devices.ICC profilesICC profiles are files containing color information such as colorcharacteristics and color space for various devices, set by the ICC(International Color Consortium). Most devices such as the monitor weuse to view images or the printer we use to print images can bemanaged (color management) using these ICC profiles and the colorbetween different devices can be more closely matched.DPP has color management that uses these ICC profiles.Tone CurveA tone curve shows values before adjustment (input) as the horizontalaxis on a graph, and the values after adjustment (output) as the verticalaxis. Since the values of before adjustment and after adjustment are thesame before any adjustment is made, the tone curve displays as astraight line from bottom left to top right, and by changing this tonecurve, you can adjust in detail the image’s brightness, contrast andcolor. The more you go right on the horizontal axis, the more the plusvalue it becomes, and the higher you go on the vertical axis, the morethe plus value it becomes.COPY