The theory behind Pixels
If you want to learn Photoshop, you want to learn how to handle PIXELS
What are BITMAPs
Pixels are the basis of "BITMAP" or "RASTER" graphics that are displayed on computer and television screens.
Pixels are usually square or rectangular
The pixels are arranged in a grid, so that they can appear "jaggy" when they are enlarged
Each pixel requires a certain amount of memory to store it and make it work. The amount of memory allocated is measured in "BITS"
Pixels have a range of colors based on their "bit depth"
Typical computers use 24 bits (16.777 million colors)
The 8-bit graphics on older tablets have a range of 2 ^ 8 (256) colors
The more pixels are, the less they appear to the naked eye
Anti-Aliasing
Same resolution - it gives a smoother look
"Jaggies" can also be hidden by using color shades to "smooth" the edges of a bitmap
By "softening" the irregular angles, an image seems to be of better quality - but it's actually the same resolution
100%
400%