Bert:
Be careful about comparing still lenses and video lenses. Still lenses are designed for a static moment so they are optimized for certain qualities (resolution, contrast, MTF, bokeh, etc.) but other qualities can become second priorities in the design (focus breathing, linearity during zoom, edge distortions during zoom, fixed front element, etc.) Video lenses must be designed for performance during live operation. A still lens can have all sorts of errors and distortions that don't show up in a still picture. Try interchanging a video lens and still lens with video and film cameras and see what happens. I have, they are apples and oranges. In fact, sometimes they have opposite qualities by design!
Plus there are all sorts of other things to consider besides the design: manufacturing, amount of materials, types of materials, quantities, efficiencies, economies of scale, distribution, etc.
While I would love to put a $1000 lens on a new $100,000 HDTV camera and have improved performance, I am very skeptical that it is possible.
Dan Grimes
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