Page 79 - DCAP109_GRAPHIC_TOOLS

Graphic Tools

Notes z If the value of a color is higher than the other colors then a color created has more tones or
tints of the color having the highest value CMYK Colour Mode: The CYMK color scheme
or mode is another very popular color scheme in Photoshop.
z Although Photoshop uses Lab Color to produce conversions between RGB and CMYK
Color modes internally, Photoshop users like us rarely, if ever, need to convert files to
this mode.
z If you convert an image from RGB Color to Multichannel mode, its Red, Green, and Blue
channels are converted to Cyan, Magenta, and Yellow (as a result, the image may become
lighter and the contrast reduced).

z Some Photoshop pros assemble individual channels from several images into a single
composite image by using this mode The Monotone mode refer to the use of only one
color, the Duotone mode refers to the use of only two colors, the Tritone mode refers to
use of only 3 colors and the Quadtone mode refers to the use of four colors.

3.6 Keywords

Brightness: It is a relative expression of the intensity of the energy output of a visible light
source.
CYMK: It is a subtractive color model, used in color printing, and is also used to describe the
printing process itself.
DPI: It is a measure of spatial printing or video dot density, in particular the number of individual
dots that can be placed in a line within the span of 1 inch.

Hue: The property of colors by which they can be perceived as ranging from red through yellow,
green, and blue, as determined by the dominant wavelength of the light.
Palettes: A panel or palette is a box (usually located on the right hand side of the screen, but
moveable) that allows you to change options associated with a Photoshop feature.
Quadtone: It is a mode of working in image manipulation software that permits printing of
image with four inks, each with its own reproduction curves.

Resolution: It is the term used to describe the number of dots, or pixels, used to display an
image.
RGB: It is an additive color model in which red, green, and blue light are added together in
various ways to reproduce a broad array of colors.
Saturation: It refers to the actual amount or strength of color that is apparent in a photograph.

3.7 Review Questions

1. Explain the different components of the Photoshop workspace.

2. What is the importance of Palettes in Photoshop?
3. What are the different attributes required in opening a new image in Photoshop?
4. Write a short note on Hue, Saturation, and Brightness.

5. What are the different characteristics of Digital Images?
6. Differentiate between bitmap and vector images.
7. Explain the concept of Resolution in Photoshop.

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