- Photoshop is used to create or
edit images. Okay, everyone knows that.
The question is what kind of image.
There are two types of digital images, bitmaps and
vector. The bitmap image is a picture that
composed by a row of pixels, while the image
vector is made of the shape of lines and
curve.
Almost all digital images are images
bitmaps, photos from digital cameras, documents
scan results, including your wallpaper
Use. The advantages of this image is he can
resulting in smooth color transitions.
The vector image consists of forms
geometric, stripes, and have color-
sharp colors. The advantages of this picture
is that it does not depend on quantity
pixels. That is, vector images can be fixed
sharp and clear in any size, start
from the size of the stamp to the width of the truck
hitch. That's why the vector image
widely used for logo, screen printing design
(including t-shirts distributions), and children's films,
child.
Back to the original question, what image
made Photoshop? The answer is
bitmap images. So, for image editing
scenery, polishing family photos, or
brings together some images use
Photoshop. For vector images like
making logos or cartoon illustrations use
vector programs such as Adobe Illustrator or
CorelDRAW.
- Notice the two images above. Both
has the same size and contains the object
the same, my child. What's different is
resolution.
Resolution is the number of pixels contained
in an inch or square cm. Value resolution
calculated in pixels per inch (abbreviated ppi)
or pixel per cm (abbreviated to ppc).
The first image has a resolution of 72 ppi,
meaning in one square inch there
only 72 pixels. This makes the image
looks ugly. Another picture has
more pixels, 300 pixels per square inch.
The result images look cleaner and tidier.
Click Image Size to open the box
Image Size dialog. There is written resolution value
picture.
3.Photoshop provides various methods
to display the so-called color
with color mode. Most color mode
The most commonly used basic is RGB
and CMYK.
RGB is the mode used by all
type monitor to display color.
CMYK is the mode used for
print color, used by all
printer.
When working with Photoshop of course we are
still using monitor output by
therefore the best color mode is RGB.
After the editing process in Photoshop
finished we can change the color mode to
CMYK for later printing or fixed
using RGB for output purposes
monitor like web or wallpaper.
How to change the color mode is by
click Image Mode menu then select mode
desired color.
