Gebruik de onderstaande hotkeys om nog sneller te kunnen werken in Photoshop CS4. 

1. V - Move tool
2. M - Rectangular Marquee tool,Elliptical Marquee tool
3. L - Lasso tool,Polygonal Lasso tool, Magnetic Lasso tool
4. W - Magic Wand tool,Quick Selection tool
5. C - Crop tool, Slice tool, Slice Select tool
6. I - Eyedropper tool^, Color Sampler tool, Ruler tool, Note tool, Count tool
7. J - Spot Healing Brush tool, Healing Brush tool, Patch tool, Red Eye tool
8. B - Brush tool,  Pencil tool, Color Replacement tool
9. S - Clone Stamp tool,Pattern Stamp tool
10. Y - History Brush tool,Art History Brush tool
11. E -Eraser tool^, Background Eraser tool,Magic Eraser tool
12. G - Gradient tool,Paint Bucket tool
13. O - Dodge tool, Burn tool, Sponge tool
14. P - Pen tool,  Freeform Pen tool
15. T - Horizontal Type tool, Vertical Type tool, Horizontal Type mask tool,Vertical Type mask tool
16. A - Path Selection tool,  Direct Selection tool
17. U - Rectangle tool,Rounded Rectangle tool,Ellipse tool,Polygon tool,Line tool,Custom Shape tool
18. K -  3D Rotate tool,3D Roll tool,3D Pan tool,3D Slide tool,3D Scale tool
19. N - 3D Orbit tool ,3D Roll View tool,3D Pan View tool, 3D Walk View tool, 3D Zoom tool
20. H - Hand tool
21. R - Rotate View tool
22. Z - Zoom tool

Brushes panel keys are important too some of the tools are brushes based.

1. Delete brush - Alt-click brush
2. Rename brush - Double-click brush
3. Change brush size - Alt + right click + drag
4. Decrease/increase brush softness/hardness  - Alt + Shift + right click + drag
5. Select previous/next brush size - , (comma) or . (period)
6. Select first/last brush - Shift + , (comma) or . (period)
7. Display precise cross hair for brushes  - Caps Lock or Shift + Caps Lock
8. Toggle airbrush option - Shift + Alt + P

Transforming selections, select borders and paths are also important and here are your keyboard shortcuts:

1. Transform from center or reflect - Alt
2. Constrain - Shift
3. Distort - Control
4. Apply - Enter
5. Cancel - Control + . (period) or Esc
6. Free transform with duplicate data - Control + Alt + T
7. Transform again with duplicate data - Control + Shift + Alt + T

The Layer panel also has shortcuts that you may use, here are some:

1. Group layers - Control + G
2. Ungroup layers - Control + Shift + G
3. Create/release clipping mask - Control + Alt + G
4. Select all layers - Control + Alt + A
5. Merge visible layers - Control + Shift + E
6. Edit layer style - Double-click layer
7. Show/hide this layer/layer group only or all layers/layer groups - Right-click the eye icon
8. Disable/enable vector mask - Shift-click vector mask thumbnail
9. Toggle lock transparency for target layer, or last applied lock - / (forward slash)
10. Edit layer effect/style, options - Double-click layer effect/style
11. Move layer to bottom or top - Control + Shift +
12. Copy current layer to layer below - Alt + Merge Down command from the Panel pop‑up menu
13. Merge all visible layers to a new layer above the currently selected layer - Alt + Merge Visible command from the Panel pop‑up menu

Bron: www.twin-pixels.com