24f51643_oard_Shortcuts___phototips_biz__Mac_OS
[Result] Switch between timecode and frame numbers (current time view) [Windows] Alt + click the current-time display in the upper-left corner of the timeline. [Mac OS] 
Option + click the current-time display in the upper-left corner of the timeline.
Photoshop Keyboard Shortcuts ~ phototips.biz
Mac OS