Dust is observed in the TJ-II stellarator with a fast camera equipped with a bifurcated coherent fibre-bundle system that allows different set-ups such as dual filtering of atomic lines or a stereoscopic view to obtain tangential and perpendicular (to the magnetic field) observations simultaneously. The camera looks to a poloidal limiter that can be biased and it is observed that when a negative voltage is applied, dust from the limiter is ejected intensely once a certain threshold voltage is exceeded. From the analysis of the simultaneous observation of the filtered and unfiltered images, we conclude that most of the unfiltered visible dust is outside the confined plasma, in the far scrape-off layer. A surprising result is the low Hα-emission of the mobilized dust, in comparison with the atomic emission of carbon or lithium, which are used as coating materials in TJ-II and therefore expected to be primary dust components. Finally, the stereoscopic set-up is used to track the motion of a few dust particles and the method is demonstrated to be useful in addressing the three-dimensional motion problem. Thanks to this set-up it is possible to obtain, at least for a few examples, the particle ejection location, as well as their velocity and acceleration.