Mastering Photoshop shortcut keys can significantly improve work efficiency. 1. Zoom and Navigation: Z key activates the zoom tool, Space bar Drag the quick pan canvas, double-click Z key to adapt the image to the window size, Ctrl/Cmd/-adjust the zoom level; 2. Layer management: Ctrl Shift N creates a new layer, Ctrl G group, Ctrl E merges layers, Shift [or] moves the layer level, Ctrl Click on the layer thumbnail to quickly select content; 3. Select and brush adjustment: M and L to switch rectangular marquee and lasso tools respectively, Shift adds/Alt to subtract selections, [or] adjusts the brush size, Shift [or] adjusts the hardness, so as to achieve efficient editing and smooth operation.

Repairing old photos can be achieved through key steps in Photoshop. The first is scanning and preliminary adjustment, including high-resolution scanning, cropping images, rotation correction and brightness/contrast adjustment; the second is to remove scratches and stains, use the imitation stamp tool to deal with large-area damage, repair tools to deal with small scratches, and pay attention to low transparency overlay and layering operations; the third is optional coloring and color tuning, and use the "hue/saturation" adjustment layer to increase retro tone; the last is to polish and output, check details, adjust sharpness, confirm resolution and select a suitable format to save. The entire process requires patience and meticulousness, especially when dealing with key parts such as the facial features of the characters.

LayerMasks and VectorMasks are used in Photoshop with similar uses but different principles. LayerMasks is based on pixels and uses grayscale values to control the display and hiding of layer areas. It is suitable for photo detail editing, soft transition effects and fine brush adjustments, but zooming in may lead to jagging; VectorMasks is based on vector paths and shapes, and has resolution irrelevant resolution. It is suitable for graphics that require clear edges such as logos, icons or text frames, and can be scaled losslessly; the selection is based on the content type (photo or graphics), whether the size needs to be greatly adjusted, and the required edge effects (soft or sharp), and sometimes combined use can give full play to their respective advantages.

Raster and vector graphics have different uses in Photoshop, and understanding their differences can help design decisions. Raster graphics are made of pixels and are suitable for photos and complex textures, but the scaling will blur; Vector graphics are based on mathematical formulas and can be scalable without loss, suitable for logos, icons and clear line art. Use the shape tool in Photoshop or importing EPS/PDF files to create Vector graphics, but loses scalability once rasterized. Using Raster includes editing photos, applying filters, or creating textured artworks; using Vector includes designing logos that need to be scaled, adding clear text or shapes. Both can coexist in the same file, but need to be cleared

The key to creating a custom gradient in Photoshop is to master the use of the gradient editor. 1. First select the gradient tool (shortcut key G), click the top preview bar to open the "Gradge Editor"; 2. Click "New" in the editor to start customization, and you can also modify the style in the built-in gradient library; 3. Set color transition by adding, deleting and dragging the color slider, and double-clicking the slider to select specific colors; 4. Adjust the opacity stop point to control the transparency changes, click the diamond icon to add the transparency node; 5. Select linear, radial and other types in the gradient tool options to match design needs, and you can get started quickly after you are proficient.

TocreateandmanipulatevectorshapesinPhotoshop,usetheShapeToolstodrawvectorpathsonshapelayers,editanchorpointswiththeDirectSelectionTool,combineorsubtractshapesusingpathoperations,andrasterizewhennecessary.First,selectthedesiredshapetool—Rectangle,Elli

ToselectaspecificcolorrangeinPhotoshop,usetheColorRangetool.1.GotoSelect>ColorRangeandclicktheeyedropperonthedesiredcolor.2.AdjusttheFuzzinessslidertocontrolselectionbreadth.3.AddmoresampleswithShift-clicks.4.EnableLocalizedColorClustersforcomplex

AnartboardinPhotoshopisamovable,resizablecontainerthatactsasanindividualcanvaswithinasingledocument.Itallowsdesignerstocreatemultiplelayoutsordesignvariationssidebyside,eachwithitsownsizeandcontent.Artboardsareidealforweblayouts,appscreens,banners,an