I purchased a half-metre Glidetrack Hybrid to get some slow dolly shots but with a much, much more portable system. Smooth horizontal camera movements can add a bit of depth to any footage, though the effect can’t be used too often.
So I’ve been practicing with this new piece of equipment for the last month, looking for people to film, and luckily Tiana is always willing to volunteer with one of her offspring. You can see the Glidetrack shots at 12 seconds (the zoom in) and 48 seconds (the horizontal track).
It’s an extremely challenging piece of equipment to use, certainly not something conducive to candid shooting. Things like exposure, focus, and composition change as you’re moving the camera from one end of the rail to the other, and single mistake in any one of those aspects will ruin a shot, so all those things generally need to be carefully planned. On top of that, simply moving the camera smoothly takes a lot of practice, as there’s a certain amount of friction in the bearings, and you need to balance that with the movement speed you’re looking for. At only half a metre (the shortest length you can purchase), the shots all tend to be slow and lingering so you don’t run out of rail.
The percentage of keepers isn’t great (I find it takes me about three takes to get it right), but when it works, the effect is very nice.