Direct eyepiece projection digiscoping means that the camera lens has been eliminated and the image is shone directly onto the camera sensor element. Effectively, the spotting scope is acting as the camera lens. This means that the image will be in focus only at the center and the further away the more vignetting or blurring can be expected. The advantages are greater magnification and lighter setup, the disadvantages are lower image quality and manual lens operation. Most digiscopers as result prefer the T-Mount Adapter that keeps the lens in the system.