If you’ve ever used Lightroom v1.0 to present a slideshow directly from the application, and had to interrupt your presentation, you probably know that it does not necessarily pick up where it left off. You might have also noticed that Slideshow (like Web) does not honor the selection in the FilmStrip. It always uses all of the photos in the FilmStrip. So if you’re presenting live slideshows, here are a couple of tips that may help you out.
Holding down the shift key when you click the Play button will cause Slideshow to start with the active photo, but will still play all photos, regardless of how many photos are selected.
Holding down shift + command (control on the PC) when you click the Play button will cause Slideshow to start with the active photo, and only play the selected photos, repeating when it gets to the end.
Finally… if the selection thing drives you crazy, you’re not the only one. This selection logic (at least for Slideshow) is slated to change in the next release.