The Varavon Pro Finder is one of many different options out there for HDSLR video capture. In addition to a 3x loupe and diopter adjustment, the Pro Finder allows you to configure the housing for low or high viewing, as well as using it as a makeshift LCD hood.
You can see a bit of the Pro Finder in action in the above video with Barry Morrill at PhotoPlus 2011.
The Varavon Pro Finder is available at B&H Photo for several HDSLR cameras, including the Canon 5D Mark II and Nikon D7000.
This PhotoPlus 2011 coverage is sponsored by B&H Photo, which Photography Bay proudly recommends as the number one source for all your photographic needs. B&H Photo is located online at www.bhphotovideo.com and in New York City at its 70,000+ sq. ft. SuperStore.