Yup, spectrum ST4 can be underslung on the Dana Dolly. For this to be successful, the moving pan axis needs to clear the bottom of the rails and belt. Therefore, you will need a ball head or a riser to lower the spectrum far enough and keep it out of the way (seen in the image below). The picture above was using a:
- 500BALLSH - Ball Adapter, inverted, clamping down the 100mm ball receiver included with most Dana Dolly Kits.
- BH-55 Ball Head RRS - with a Screw Knob Arca Clamp that interfaced directly with the Arca Compatible 50mm plate mounted to the bottom of the eMotimo Spectrum ST4.
In this configuration, the Ball Head added another 3.5 inches from the base of the 500BallSH to the ST4's mounting plate and offered plenty of clearance between the bottom rails and the bottom of the spectrum.
Tips!- the screen of eMotimo can be inverted in the settings menu to make programming easier. Additionally, any of the axes can be reversed in the eMotimo settings menu so your controller input makes sense to you!
Safety first - ALWAYS add a safety tether to the camera / ST4 in this configuration. Assume it will fall off and have someone double-check mounts with you. When initially mounting, always load up and test for double or triple the weight, and wiggle before letting go.
Has the spectrum ever had a mechanical failure that caused a camera to fall? No.
Has a user ever miss-mounted the LBracket to the tilt clamp where the clamping force was on the outside edge of the dovetail and had their camera fall to the floor on first move? Yes. Best practice is to only open the tilt clamp far enough to slide the LBracket in or out. Fully opening it up to toe your rig in is convenient but risky if you aren't diligent.
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