As I mentioned last week, the latest version of Lightroom really gave me a great reason to start using Smart Previews.
From now on, when I import a batch of images I will definitely make sure that Smart Previews are generated during import.
But what about all the images you already imported? Of course it is possible the let Lightroom generate Smart Previews for all the images in your library, but most likely this is unnecessary as most of these images has probably already been edited and finalized. Instead, it makes more sense to use Lightroom's metadata query control to search for images matching specific criteria.
For example, if I want to see which images taken this year with my 24-105L lens that does not yet have a Smart Preview:
- First of all, go to the Library module and select "All photographs". Then at the top, select Metadata and select 2016 in the Date box, All in the Camera box and the selected lens in the Lens box.In one of the boxes, click the little "burger menu".
- Click Add Column.
- From the drop down menu select Smart Preview.
- In the new Smart preview box, select No Smart Preview.
Now you should have a list of images for which now Smart Previews have yet been generated. All that remains now is to select all images, unless you want to refine your query, and generate the Smart Previews as described here.