Here are some shortcut keys I’ve come across in Lightroom 2. This will get updated as I come across more.
General
cmd-/ – show all of the command shortcuts for the current module.
cmd-opt-[1-5] – move between different modules
F5-F8 – Toggle the around-screen panels (T/B/L/R)
tab – Toggle left/right panels
shift-tab – Toggle all panels
L – Cycle through “Lights-out” modes (dim, dark, normal)
F – Cycle through three full-screen modes
cmd-shift-F – Full Screen
cmd-shift-F, T – Full view with minimal distractions
cmd-option-shift-E – Export using the last settings
T – Toggle grid view toolbar
0-5 – apply zero to 5 star rating
6-9 – red, yellow, green, blue label. No shortcut for purple or none.
Library Module
G – Return to (library) grid mode
J – Toggle library grid cells between the three display states
P – Mark as pick (white flag)
X – Mark as reject (black flag)
U – Clear flag state
shift-{P, X, U} – Set flag state and move to next image
N – Go into survey mode.
/ – Deselect active photo (also removes from survey mode)
cmd-D – Deselect everything
C – Compare mode. “Select” image is on the left. Use right arrow to move on. Use X<-Y button to make new shot the Select.B – Add to Quick Collection
cmd-return – Slide show of the quick collection
\ – Toggle library filter bar
cmd-G – Group as a stack (only in folder panel)
cmd-shift-G – Ungroup stack
S – Toggle stack contents
cmd-option-K – Turn paint tool on or off
option-click-+ in smart collection editor – Add a collection option (with any/all subcriteria)
I – Cycle through different info windows
cmd-J – Configure the info windows (loupe view)
Z – Zoom to 100%
ctrl-,- – Change thumbnail size in grid view
D – Go to Develop module
Develop Module
J – Toggle clipping highlights
option-click – exposure/recovery slider and blacks slider to get clipped region
\ – Toggle master/version
Y – Side-by-side master/version
shift-Y – Split-screen master/version
option-Y – Side-by-side, vertical
cmd-' – Make virtual copy
cmd-click Sync – Auto sync on multiple selected images
cmd-{1,2,3,etc} – Go to successive panels on the right
, . – Jump to next/previous slider in “Basic” editing panel
V – Quick grayscale
cmd-N – Make a snapshot
K – Adjustment brush
M – Gradient filter
' – Invert gradient
H – Toggle adjustment brush pin visibility
A – Toggle adjustment brush automask
1-0 – Control adjustment brush flow (10% -> 100%)
O – Toggle adjustment brush mask
Return – Adds new adjustment brush pin
/ – Toggle between A and B adjustment brushes
[ ] – Change size of adjustment brush. Add shift to change feather.
cmd-shift-H – Toggle rule-of-thirds grid in crop tool
R – Toggle crop tool
R, shift-tab, cmd-shift-H, L, L – Crop in lights-out mode. (go into crop mode, hide panels, hide thirds grid if shown, lights off)
page-down – When zoomed in, will scroll by screenfulls, down and then across.
N – Toggle spot remover tool
