Paths are vector-based, not pixel-based, which means they're made up of mathematical points connected by lines and curves, and even though we can see them on the screen while we're working in Photoshop, they don't really exist in the document unless we do something more with them.
A ShapePath itself is a Path with additional properties describing the stroking and filling parameters, such as the stroke width and color, the fill color or gradient, join and cap styles, and so on.
There are several types of layers that can be created: Vector layer—used for placing vector objects into. Pixel layer—used for pixel based editing.
At its simplest a Photoshop path is a line with anchor points at either end. It can be a straight line or it can be curved, depending on how you create it. More-complex paths are made up of multiple segments, each with an anchor point at either end.
Photoshop is based on pixels while Illustrator works using vectors. Photoshop is raster-based and uses pixels to create images. Photoshop is designed for editing and creating photos or raster-based art.
The shape of a pixel is often expressed as a ratio, just like images. So, one to one is square. You can create a number of different image shapes with the same number of pixels, simply by changing the shape of the pixels.
The main difference between vector and raster graphics is that raster graphics are composed of pixels, while vector graphics are composed of paths. A raster graphic, such as a gif or jpeg, is an array of pixels of various colors, which together form an image.
The term pixel is short for "picture element", and pixels are the tiny building blocks that make up all digital images. Much like how a painting is made from individual brush strokes, a digital image is made from individual pixels.
Paths are really useful. Once you've got the hang of using the Pen tool and the other path tools, you can create really complex freehand shapes such as symbols, drawings and icons. You can then turn these shapes into raster images at any resolution! Paths are also great for selecting irregular objects.
In graphics design, a vector path is a drawn or generated outline that represents a series of smooth straight (vector) lines instead of raster dots (or bitmap dots). Therefore, the paths are independent of resolution.
Pixel layers (which are usually simply called layers) let you make alterations to actual image information on a separate layer, preserving your original image, and allow you to combine elements from different images. Open the Layers Palette. To work with layers, you need the Layers palette visible.
Vector graphics are made up of lines and curves defined by mathematical objects called vectors, which describe an image according to its geometric characteristics. Examples of vector graphics elements within After Effects include mask paths, shapes on shape layers, and text on text layers.
Select your shape. From the flyout menu in the Paths palette, select 'Make Work Path…' or Option-click the 'Make work path from selection' button at the bottom of the palette. Set the tolerance based on the complexity of your shape – the simpler the shape, the higher the tolerance. Click OK.
Shape layers contain vector graphics objects called shapes. By default, a shape consists of a path, a stroke, and a fill. (See About paths and Strokes and fills for shapes.) You create shape layers by drawing in the Composition panel with the shape tools or the Pen tool.
Paths have numerous practical applications that can make your artwork look significantly more professional. It's often used by graphic designers to make text follow a curve or make a circle, precisely separate objects from backgrounds, and stylizing type for artistic typography, using Bezier Points.
In digital imaging, a pixel (abbreviated px), pel, or picture element is the smallest addressable element in a raster image, or the smallest addressable element in an all points addressable display device; so it is the smallest controllable element of a picture represented on the screen.
A pixel (short for picture element) is a single point in a picture. On the monitor of a computer, a pixel is usually a square. Every pixel has a color and all the pixels together are the picture.
PIXEL DIMENSIONS are the horizontal and vertical measurements of an image expressed in pixels. The pixel dimensions may be determined by multiplying both the width and the height by the dpi.
Raster images are made of pixels, or tiny dots that use color and tone to produce the image. Pixels appear like little squares on graph paper when the image is zoomed in or enlarged. These images are created by digital cameras, by scanning images into a computer or with raster-based software.
Pixels are tiny coloured squares on a screen and when there are a lot of them together, they make up a pixel based graphic. Vector graphics are mapped out using mathematical equations which calculate where the edges of the shapes sit in relation to one another.