Currently, the video lens doesn't allow an easy way to modify the filters it uses. If you want to modify them, my best guess would be to obtain the source for the lens and changing the filter settings by hand.
If you want some help in doing that, feel free to drop a comment below this answer and I will be happy to guide you in the right direction.
Best Answer
Its relatively straightforward to remove the video lens.
From a terminal:
Alternatively, from the software center just search for
unity-lens-video, click remove and click Remove All when prompted.Finally - logout and login.