I really like this little gizmo for making a quick switch between portrait (vertical) and landscape (horizontal) orientations on a tripod or monopod. The device goes between your tripod head and your camera body (or lens foot), and with a quick press of quick-release button, you can swing the camera body up 90 degrees or down 90 degrees to swap back and forth.One caveat: I have used this primarily on a monopod. That is relevant because a monopod isn't providing perfect leveling of the camera; you do that yourself. But it was very useful for letting me choose on the fly whether to shoot portrait or landscape when doing sports photography.Your mileage may very on a tripod depending on a) how sturdy your tripod is and b) how heavy your camera body and lens are. What I mean by this is that, when you rotate the camera ninety degrees, you take this big heavy weight from directly above the tripod head to way off to the side of the tripod head, applying wonderful leverage. Since there's going to be some play and flex in the tripod itself, I feel like, if you set it up to be perfectly leveled in one orientation, then switch it ninety degrees, it's not going to be perfectly level in the second orientation. That's not a failing in the product; that's just physics.The only small ding I would give the product is that I could never snug it up to my lens foot so that there wasn't still a bit of rotational play. I've had other quick release plates that snug up much more fully. But it still worked well for my purposes.
