Our animation software packages need a live feed streamed to the computer to be able to capture an image. Unfortunately, most digital cameras do not offer this - unless they have a webcam mode (such as some high-end 'mirrorless' cameras).
Zu3D and Cloud Stop Motion are designed to work with any webcam - integrated or external. It is easy for you to import any pictures taken on your digital camera into Zu3D and Cloud Stop Motion, but you will not get the benefits of the live image or onion skinning, which are incredibly useful features whilst in the midst of animating!