Photoshop is Adobe's photo editing, image creation and graphic design software. The software provides many image editing features for raster (pixel-based) images as well as vector graphics. It uses a layer-based editing system that enables image creation and altering with multiple overlays that support transparency. Photoshop is a photo editing and raster graphic design software which allows users to create, edit, and manipulate various graphics as well as digital art. It also allows to create and edit raster images with multiple layers and import the images in various file formats. Photoshop is developed by Adobe Systems for both Windows and MacOS.
The images in Photoshop are stored pixel by pixel, with a code indicating the color of each. The image is just a big mosaic of dots. Therefore, before you can do anything in Photoshop, you first need to indicate which pixels you want to change. The selection tool is one way of doing this. Click on this tool to select it, then click and drag on your image to make a dotted selection box. Hold shift while you drag if you want a perfect square or circle. Any pixels within the box will be affected when you make your next move. If you click and hold on this tool with your mouse button down, you will see that there is also an oval selection shape, and a crop tool
To crop your image, draw a box with the crop tool. Adjust the selection with the selection points, and then hit return to crop.
The lasso tool lets you select freeform shapes, rather than just rectangles and ovals.
Yet another way to select pixels is with the magic wand. When you click on an area of the image with this tool, all pixels that are the same color as the pixel you clicked will be selected. Double click on the tool to set the level of tolerance you would like (i.e. how similar in color the pixels must be to your original pixel color. A higher tolerance means a broader color range)
This is a very important tool, because up until now all you have been able to do is select pixels, and not actually move them. The move tool not only allows you to move areas you have selected, but also to move entire layers without first making a selection. If you hold the option (or alt) key while clicking and dragging with the move tool, you can copy the selection.
Can be used to draw straight lines. Click on the tool to select it, then click with the tool on the canvas area and drag to draw a line. When you release the mouse button, the line will end. You can change the thickness of the line or add arrowheads to it by double clicking on the tool to see this dialog box:
Pixels per Inch Photoshop files are made up of tiny squares of color called pixels. Using large pixels will make a grainy image, and using tiny pixels to make the same image will be much smoother. However, the smaller the pixels, the more of them there are in the file, and the larger the file size will be. If the file size is large, it opens slower, takes longer to save, and takes up more room on a disk. The the key in choosing a resolution is finding the balance between image quality and file size. For example, if I want to re-tile my bathroom floor to make a smiley face, I can either use large tiles or small tiles. On the left I use 10 tiles on each side for a total of 100 tiles. On the right I use 25 tiles on each side, for a total of 625 tiles. If each of these images measures an inch on each side and each tile is a pixel, the image on the left would have a resolution of 10 pixels per inch, or 10 ppi. The image on the right would be 25 ppi. Notice how a small increase in resolution corresponds to a much larger increase in file size, because the increase is exponential. You can begin to see why images of different resolutions sometimes change size when combined in one file, or when brought into other programs. For instance, what if I wanted to draw the image on the right in tiles the size of the image on the left? I would have a much larger image in the end. This is what happens when you bring an image with a high resolution into a file which has a lower resolution. There can only be one resolution per file, so the pixels of the image coming in are resized to the size of the existing pixels in the file.
Photoshop is a large graphic design software program created by the Adobe company. It enables a novice photographer to touch up recent photos, and experienced graphic design professionals to create advertisements, logos and marketing pieces. Through a vast collection of filters, tools and palettes, Photoshop offers benefits to users of all skill levels..
Photoshop offers the benefit of touching up photos that may be otherwise ruined by an errant speck of dust, an unwanted person or item in the background intruder, or a subject's clothing stain. Tools such as the software’s “Clone” tool can be used to copy a matching area of the same picture and place it over-top of the unwanted area, creating a seamless image. For example, using the clone tool, a desired photo of a sunny sky that has an unwanted bird in the shot can be edited to remove the bird from the scene without the viewer seeing any discoloration or missing spots.
Photoshop gives even the most basic user the opportunity to create a colour palette of opportunity. Through some of Photoshop’s selection and color enhancement tools, a user may quickly change the color of a model’s eyes, switch the hue on a sweatshirt to include it in a catalog, or add a tie-dye pattern to a blanket. Photoshop also allows graphical alterations such as changing a color photo to black and white or sepia. Another option is to add spot colour, such as when a black-and-white photo features one or a few individual spots with bright bursts of color, calling attention to an item such as a flower, balloon or shoe.
Photoshop is one of the only graphics software programs that allows users to work in layers. Layers are a way of stacking designs, then removing or hiding them to see how your work looks. For example, on a free graphics program such as Microsoft Paint, if you draw a line on an image, it becomes flattened on top of it and you can’t move it or add to it. In Photoshop, you can add a layer to your image, draw on top of it, then make any changes required. Layers are similar to a flip book. Imagine your image as the last page of the flip book. Each page of the flip book places something on top of the image, and each page can be deleted, or further designed to enhance the image.