A top-mount design adapter (an L-shaped bracket to convert the sidemount to a perfectly centred top-mount is available now for users who want to utilize the benefits of such a layout. See our HM-J2 under Gimbals.

Yes the Jr.2 is physically strong enough to hold a 300 F2.8 or a 500mm F4 although if these (or other large lenses) are your primary glass, we suggest you move up to the BWG-LW or HD as the size and stiffness of the bigger gimbal are a big improvement. The primary usage for this lightweight gimbal is to create a Lightweight Hiking/Travelling kit - so please do not underbuy, ask us if you are uncertain.

This sidemount design is purposefully compact to allow it to fit into a small backpack with the rest of your equipment. The intended uses of this gimbal head are for small-medium telephoto lenses such as: 100-400mm f/4, 300mm F4, 70-200mm F2.8, 50-500mm, etc.

The cast aluminum arm is tough, rigid and, best of all, extremely light! The whole complete gimbal head weighs only 1.3lbs!!! That is less than 1/2 the weight of our next lightest head, the BWG-LW. All parts are polished and anodized to give the smoothest operation and toughest clamping force -- with minimal effort. The knobs are very soft overmolded rubberized plastic, very easy to turn and easy on your hands.