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IMAGE EDITING (9/28 and 12/7/09)
FILE FORMATS:
Bitmap (.bmp)
Large files but in the best resolution available from the device that created the image.
TIFF - Tagged Interchange File Format (.tif)
Large files but in the best resolution available from the device that created the image.
Meta data is included in the file (that's why it's called 'tagged')
JPEG - Joint Photographic Experts Group (.jpg or .jpeg)
Compressed file format eliminates some unseen visual information to make file sizes smaller
Some image quality is sacrificed for small file sizes (lossy compression)
16 million colors available whereas a GIF image can only hand 256. However, a GIF can handle transparency whereas a JPEG cannot. (Use a PNG instead).
PNG - Portable Network Graphics (.png)
Compressed file format eliminates some unseen visual information to make file sizes smaller
Some image quality is sacrificed for small file sizes (lossy compression)
16 million colors available whereas a GIF image can only hand 256. However, a GIF can handle transparency whereas a JPEG cannot. (Use a PNG instead).
PSD
CONCEPTS:
Compression
Lossy compression: Some quality is lost in order to compress the file
Lossless compression: No quality is lost in order to compress the file
Meta Data
Text data recording information like the exposure, date, photographer, camera used, etc., embedded in the image file and readable by some software and ignored by others.
Transparency
Layering