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What does ps mean (basic function and use of ps)
AdobePhotoshop, referred to as "PS", mainly deals with digital images composed of pixels. The main functions are graphic design, advertising photography, image synthesis, web page production, post-decoration, visual creativity and so on.

First, the software interface layout

Top: menu bar

Column 2: Attribute column

Left: Toolbar

Middle: drawing area/canvas area/workspace

Right: Floating Panel

Division of PS interface layout

Second, the left toolbar details

Selection tool set: mainly used for selection, selection of moving cutting, etc.

Decoration tool set: image decoration, portrait polishing, post-studio, etc.

Vector toolset: mainly used for vector modeling, selection, deformation and movement of path anchor points, etc.

Comprehensive toolset: comprehensive operations such as moving, scaling and color filling of canvas.

PS left toolbar partition

Third, set preferences.

After knowing the page layout of PS, the next thing to do is to set preferences, and the shortcut key CtrlK calls up preferences.

Click Performance, pull the blue slider to about 90%, and adjust the historical status on the right side to 50.

PS preferences-performance settings

Then click on the temporary disk and check all disks except the C disk.

PS Preferences-Settings for scratch disk

After this setting, it is beneficial to improve the performance of PS in operation, and it is not easy to get stuck; Adding historical status is also convenient for modification when drawing.

Fourth, create a new canvas preset.

After setting the preferences, you can create a new canvas for drawing, but there are also many knowledge points here!

Create a new canvas.

The top bar is a variety of presets, including common sizes of photos, printed matter, pictures and illustrations, web pages, mobile devices, movies and videos. For example, printing, we often use A4, A3 size and resolution.

PS new canvas

Verb (abbreviation for verb) unit

Our usual unit is cm/mm cm/mm-printing unit.

Pixel px- display unit

PS unit

Intransitive verb solution

Concept: Resolution refers to the number of pixels per unit area.

For example, the unit area of 1 cm * 1 cm has 300 pixels and 32 pixels, and the image with 300 pixels is clearer.

Resolution units: ppi and dpi.

PPI is used for display, which can be understood as one pixel and one grid.

DPI is mainly used for printout, and the number of ink dots per unit area is 1cm * 1cm.

So the resolution unit is PPI when drawing.

PS resolution

Common resolutions in design and drawing:

450 PPI- business cards, book binding, jewelry, car photo albums, etc.

300 PPI- A document of about A4-A3 size in a regular printed publication.

150 PPI- indoor posters, booths, Yi Labao, etc.

100 PPI- inkjet photos

72 PPI- electronic display screen

Below 72ppi-Very large outdoor advertisements are generally 32ppi.

Seven, color mode

Commonly used RGB colors and CMYK colors

PS color mode

RGB: Electronic Display Mode

The three primary colors of light R: red G: green B: blue.

Principle: imaging principle of kinescope

CMYK: print mode

C: cyan-cyan

M: magenta-magenta

Y: yellow-yellow

K: key card-black

Principle: Ink mixing principle. The mixing principle of three primary colors of pigments: black ink mixing and "full color printing"

Ok, that's the end of today's detailed explanation of PS basics. Remember to open PS to see the software layout, set preferences and see the new canvas! It is better to combine theory with practice!