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Version
When making image adjustments in Corel AfterShot Pro, you are editing versions instead of altering the master file. The
initial thumbnail is called the master version. You can have many versions from the same master file; for example a color,
sepia, and Black & White version all based on the same master file.
General Digital Photographic Terminology
These are terms that are common to digital photography, and are included here as a convenience. For more information
on Digital Photography, or photography in general, a great place to start is Wikipedia:
Wikipedia Page on Digital Photography: http://en.wikipedia.org/wiki/Digital_photography
Wikipedia Portal on Photography: http://en.wikipedia.org/wiki/Portal:Photography
Luma
Luma or Luminosity is a measure of the brightness of an image or pixel. This is typically calculated as a 0.2126 R + 0.7152
G + 0.0722 B. Luma is also called Value in the HSV (Hue Saturation Value) color model.
Chroma
A measure of the color of an image or a pixel, sometimes called Hue, as in the HSV color model.
Asset management
Asset management involves importing your photos to create photo databases (called catalogs) that manage the data
related to your photos. The databases make it easy find and track your photos based on photo data, such as EXIF info or
ratings and keywords that you assign. Asset management also involves archival tasks, such as creating backups or
exporting databases.
Metadata
Metadata, in a photographic context, refers to all the information related to a photo. It can include data that comes from
your camera settings, such as shutter speed, aperture, and ISO. It also includes EXIF data, such as time and date the
photo was taken. You can also add metadata, such as keywords, ratings, and captions.
JPEG files
JPEG (Joint Photographic Experts Group) is the most widely used digital image file format, ideal for sharing photographs
on the web, in email, or as final-product images. JPEG files are compressed using Lossy Compression, and thus do not
contain as much data as RAW or other lossless file formats.
TIFF files
TIFF (Tagged Image File Format) is a file format for digital images that provide the highest quality output image from
Corel AfterShot Pro. TIFF is a broadly supported file format that saves all the detail and color information in your
photographs without using lossy compression (unlike JPEG images). TIFF images are quite a bit larger in file size than a
comparable JPEG image.
RAW files
Often called "digital negatives", RAW files are digital photo files that capture relatively unprocessed (thus "raw") data from
the digital camera's sensor. The files tend to be larger than other file formats because they capture a wide range of image
data. The data gives you more precise image adjustment results and more post-processing options. After you adjust the
files, they must be "developed" by outputting them to a standard file format, such as JPEG. Different camera models
produce different RAW files formats (for example, many Canon cameras produce CR2 files and most Nikon cameras
produce NEF files).
Workflow
A workflow, in the context of digital photography, refers to the process that occurs between the time you capture a
digital photo and the time you output the photo to its final destination and format. This includes everything from getting
your images off your camera and into your computer, adding keywords and other metadata, editing and optimizing your
images, managing backups and archives, printing, outputting to the Web, as well as many other steps and processes.
Your workflow might be simple and
ad-hoc
, or it may be complex, codified, and very repeatable and structured.
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