The patented  FILMscreen technology employed in the MOVIEtube is so fine that it allows the image to be resolved on a static non moving intermediate element, the “FILMscreen”. For  the “FILMscreen” to achieve such a fine and clean image structure on a static intermediate element one must also understand the pit falls of Gound Glass (GG).

Understanding Ground Glass (GG):
If you closely examine a GG, you'll find a rough, rocky glass mountain landscape. Each mountain acts like a prism. On each glass surface of this prism light breaks and illuminates as a colourful Intermediate Image Point (IIP).  Further you should imagine that this glass mountain looks like a diamond. If you film a diamond with a back light, you will see bright illuminated faces- you will also see dark faces. The dark faces block light and embody what is commonly known as grain. A certain size of IIP is necessary to block the light. This minimum size needed to allow intermediate focusing is directly proportional to the device’s apparent grain.  All Intermediate Image Points added together determine the resolution of the intermediate image.  Since the size of these points can only be reduced so far, this becomes the limiting factor both of the possible resolution and visibility of grain.
The patented MOVIEtube FILMscreen has such a fine grain structure, that it is very suitable for the static GG method.  Also it uses a light scattering photochemical layer, best for getting homogenous images. It has no glass mountains at all it -is perfectly flat. The goal with this device is not only to produce a video frame with shallow depth of field, but also to create a truly filmic image. As with all other intermediate images MOVIEtube also has a light loss, this is 2-stops.

It does so using four factors.
Use of 35 mm depth of field with full framing capability.  One can now use film lenses in the way one would with a film camera.
A much smoother image.  Since the film screen is composed of finer particles spaced closely together, the scattering of light closely emulated the effect of passing through and bouncing between the different layers of film emulsion.  This minimizes the moiré effect reducing the “video” look.  Along with the blurred background from the reduced depth of field this compensates for the judder artifact resulting in smoother panning.
A warmer image is produced.  The FILMscreen is designed to counteract the video sensor’s tendency to bias toward a cooler look, achieving a more film-like colour balance.
A smooth, pleasing bokeh is achieved.  The out of focus circles of confusion in the background are softer and smoother than would normally appear with a standard video lens.

The benefits of a static intermediate are:
The imaging system is always ready, you'll never forget to turn it on.It will never over heat, or seize up in low temperatures.
There are no mechanical moving parts to break.  It runs without noise.  Along with the Panasonic HVX200 recording to P2 cards it makes an excellent silent package for close-up or quiet dialog.
The image tube is assembled in a clean room and sealed- just like a lens. No dirt or fluids can get into the assembly, optical maintenance issues are reduced to a minimum.  As long as the seal remains unbroken the elements stay clean.  
Because of it's high ability to scatter light you can use any focal length available without getting an in-homogeneous image.