Sometimes third-party plug-ins fill obvious holes... this is truly the case here. Wouldn't it make sense to be able to quickly send photos from Apple Aperture to Final Cut Pro? You'd think that sort of thing would be built right in (its not). Fortunately the fine folks over at Connected Flow over an elegant (and free) solution.
“The Aperture to Final Cut Pro plugin lets you take your images stored in Apple's professional photo management application and send them directly to a video sequence in Final Cut Pro. From within Aperture, you can select photos, set their order and duration and select transitions between frames.”
The Aperture to Final Cut Pro plugin is a free download and is provided on an as-is basis.