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TRANSCRIPT
Schedule4.3. (Fri) 7.3. (Mon) 8.3. (Tue) 11.3. (Fri)
Color systems, image formats
Photoshop basics &tools
Photoshop practice
Photoshop practice
14.3. (Mon) 15.3. (Tue) 18.3. (Fri) 21.3. (Mon)
Office as drawing tool
Corel Draw PDF basics Questions,problems
What isthe course about?
Photoshop
Corel
Power Point
Excel
PDF (Acrobat)
Color systems
Image formats
Resolutions
RGBAdditional color system
red, green and blue light
256 levels of every color (8-bit.)
more than 16 million colors (2563, 24-bit)
used in web, in screens and for example MS:s
Office-programs
RGB
CMYKSubtractive color system
Cyan, Magenta, Yellow and Black (K) paint
Press-houses
levels are posted in percents
32-bit
Rasterizing
CMYK
Color circle
red
magentablue
cyan
green yellow
Indexed colorUsed mostly in GIF-pictures for web
Only 256 colors
Transparency feature
Not suitable for press-use.
Grayscale256 tints of black
In tables, grayscale images etc.
Image formatsPSD
JPG
EPS
TIFF
GIF
PNG
PSDPhotoshop-format
Layers
Original data
Vector data
Text editable
JPGEffective compressing
algorithm
“Lossy” (loses information)
Usage: www, MS-office (press)
JPG
150 dpi/saved once quality 6
150 dpi/saved once quality 0
150 dpi/saved twice quality 0
TIFFLossless compressing (LZW)
Independent for platform (PC, Mac)
Usage: press (Office)
EPSEncapsulated PostScript
“Raw data”
Can also be compressed (jpg)
Usage: press
Also vector data
GIFIndexed color (256)
Lossless
Transparency
Can be saved also interlaced
Usage: www, MS-Office
GIF
JPG/quality 12 GIF
PNGLossless
RGB-color with alpha channel supported
Transparency
Usage: screen
Resolutionswww: 72 dpi (exact
size)
Word & PP: 72-150 dpi
Press: 300 dpi (exact size)
Questions?