How to hold a 3-axle gaimbal to achieve max. horinzontal stabilization>

DMKAlex wrote:

In picture B, the camera is extended out. Since the up/down movement falls into one of the axle. Would this position give me a more stabilized video?

There's a difference between stabilizing the aim of the camera and the position of the camera. When you walk around with a gimbal, the aim is stabilized but the camera itself is moving. Camera motion shows up in the shot as changes in the relative position of objects - for example a flower in the foreground moves relative to the background behind it.

In nautical terms, what a gimbal does is correct for the rotational motions of roll, pitch and yaw, but it does not correct for the translation motions of sway, surge or heave.

Camera motion is not necessarily a bad thing, because sometimes what you're trying to do is a pedestal or trucking shot. But you can also get motion that you don't want, such as the up-and-down bobbing ("heave") that's typical of walking shots. This doesn't always look too bad, but if there's something relatively close to the camera like a railing beside the path or a walking subject close in front of you it can be quite distracting.

It's the same reason why gimbals are pretty useless for stabilizing macro work - they don't prevent your grip from those translational movements. They only hold the aim steady and that's only effective for more distant objects.

The position that you hold your gimbal in will only get rid of unwanted motion if it succeeds in preventing the camera itself from moving in the unwanted direction. Neither of the positions you've shown really does that - for example to counter the "walking bob" there's no provision in the axes of the gimbal to prevent vertical movement of the actual camera itself (as opposed to the aim of the camera).

In fact, holding the camera out in front places a lot more load on the wrist, so I strongly suspect it'll either cause you to tire a lot faster or loose fine control and introduce more unwanted motion.

That having been said, there's no substitute for actually trying some test shots to see how well it works for you.