Step 4: Data Input
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Digital Photo Print Guide
The types of data format
JPEG
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Used by many cameras such as digital single-lens reflex cameras and compact digital cameras.
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Picture making is performed either by the person taking the photo, or using the preset image
processing unique to the camera.
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Each RGB color has data with 256 levels (8 bits).
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The volume of data is low, but when the data is saved (compressed), part of the data is lost, so that
the image deteriorates if you retouch and save it repeatedly.
TIFF
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A commonly used image format.
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The volume of data is high, but the image does not deteriorate even if you save it repeatedly. It can
also be used in many different applications, so it is often used for saving images after retouching
them.
RAW
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The color and light information obtained by the picture elements of the camera are recorded without
modification. It's saved directly in the recording media without going through image processing in
the camera.
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You can change the white balance, contrast, and gradation easily after shooting a picture.
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Because the data format used by each camera manufacturer is different, it cannot be displayed
directly in commercial applications and must be converted (developed) into a format such as JPEG or
TIFF.
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In many cases, RAW has more levels than JPEG (12 bits/4,096 levels or 22 bits/around 4,190,000
levels) and if you save it in a format that can handle a similar number of levels such as TIFF or
Photoshop PSD, you can keep deterioration of the image to a minimum.
