JerryJaing has published an updated version of his screen capture tool for Windows Phone 7.5.
The app, which is now in version 3.0, will now listen out for camera button being pressed for a period specified in the settings, and can capture up to 20 or more consecutive images in one session.
Images are now not automatically saved to the picture hub, but rather to temporary storage, where the best shots can be saved to the picture hub.
The app will not work with movies and games, but is otherwise fully functional.
Read more about the app at XDA-Developers here.