First saw this at BVE this year and put my name down for one. The problem with the original LCD bracket is that its a circular rod so the ability for the LCD to tilt to one side is a major pain. After all I am the inventor of canted shooting, its known as the Howden shot.
Vocas obviously saw the strength in a rectangular bar system rather than a circular rod. With this Vocas system you can never have a squint viewfinder.
The best for me is the ability to park the VF in your camera bag without the need to keep taking off your loupe.
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