Just acquired a Mamiya 90mm and 210mm lens for studio use for my RB67 Pro SD. I was quite happy to see the included rubber type Lens Hood for each of those lenses. I was then told that the lens hood was mainly for field (outdoor) use and that I really needed a Compendium while using those lenses in the studio (if I REALLY wanted to be protected by stray light. I'd rather not have to set a Compendium for each focal length if I could avoid it and simply use the attached Lens Hood. Is there a Compendium available for the Pro SD? If so, how much better would the protection be?