Thanks Frank. I thought of smart albums, but was hoping it would be possible to configure it in the drop down menu itself. And thanks for tip on the underscore:)
Just an observation: I have created several smart folders and get a feeling that Aperture takes a tad longer to display images in smart folders as it has to first implement the logic criteria. Do others notice this lag too?
While an Album is just a static list of pointers back the images they contain, as you noted a smart album actually has to run some code in order to find the images.
So depending on the size of the container the smart album is searching or the complexity of the search, there can be a slight delay though I guess I have never searched through a large enough group of images to notice much if an effect.
Just an observation: I have created several smart folders [albums] and get a feeling that Aperture takes a tad longer to display images in smart folders [albums] as it has to first implement the logic criteria. Do others notice this lag too?
It depends on what the Source is set to in the Smart Album. (Look at the dark line near the top of the Filter HUD.) Often it is set to "Library", in which case it takes (afaict) the same amount of time to filter as does selecting one of the drop-down filters when "Photos" is selected on the Library tab of the Inspector. But note that one very often uses the drop-down Browser filter on a very small subset of the Library contents: the currently selected container. Smart Albums set to a small Source container should load very quickly.