Zoom in

Command–Equal Sign (=)

Zoom out

Command-Minus Sign (–)

Zoom out with the Zoom tool selected

Option-click the Canvas

Zoom to region

Command-drag in the Canvas

Zoom to 100 percent

Option-Z

Zoom to fit in the Canvas

Shift-Z

Show all color channels

Shift-C

Show the transparent channel

Shift-T

Show the alpha channel overlay

Option-Shift-T

Show the RGB channels only

Option-Shift-C

Show the red channel

Shift-R

Show the green channel

Shift-G

Show the blue channel

Shift-B

Show the alpha channel

Shift-A

Show the inverted alpha channel

Option-Shift-A

Show the Canvas at full resolution

Shift-Q

Enable/disable field rendering in the Canvas

Option-F

Enable/disable motion blur in the Canvas

Option-M

Show the rulers

Shift-Command-R

Lock the guides

Option-Command-Semicolon (;)

Show/hide the grid

Command-Apostrophe (’)

Show/hide the guides

Command-Semicolon (;)

Show/hide dynamic guides

Shift-Command-Semicolon (;)

Show/hide film zones

Shift-Quotation Mark (”)

Show overlays

Command-Slash (/)

Switch between the current channel and alpha channel

V

Show/hide safe zones

Apostrophe (’)

Enable/disable snapping to guides

N

Expose active layers

X

Expose all layers

Shift-X