That is why vectors are used frequently in graphic design, especially for logo design. Unlike raster images which can look blocky and distorted as you scale up in size, vectors keep their beautifully smooth curves and crisp lines. The really great thing about vector images is, any object you draw or create this way can be scaled up without any loss of quality. The shapes can be filled with solid colours or gradients or they can have strokes (a sort of outline) or they can have both a fill and a stroke. They are shapes and lines created by mathematical equations. Vector images are composed of points and paths. Raw files from your camera are also raster images, and you can edit them in Photoshop using Camera Raw. When it comes to saving your files, JPEGs, GIFs, PNGs and TIFFs are all raster image file formats. ![]() For example, all of the tools that work with brush tips, such as the painting tools, the clone stamp tool, the blur tool and so work by changing or affecting the individual pixels in your image or design. Most of the tools in the Photoshop toolbar work by manipulating pixels. Here is where you determine the resolution when you choose File > New in Photoshop. If you know that you are creating graphics or editing photos that will ONLY be used for web or on a screen, then you can start your new file at a low resolution of 72 ppi. Use Low Resolution For Web or Screen Graphics It’s always better to start with a high res image and reduce its size and quality if needed rather than vice versa. Very occasionally it might look “kinda ok” on screen when you go from low to high, but the quality will be poor and your design will suffer. It is generally not a good idea to try and go from low to high resolution. You can always lower the resolution of an image from 300 to 72 ppi. If you know that you are creating graphics or editing photographs that will be used for print use or for print AND web, start your new file at a high resolution (300 ppi).
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