Oscillatoria sp., a filamentous cyanobacterium, time lapse, about 500% of normal movement speed. Oscillatoria is a genus of filamentous cyanobacteria which is named for the oscillation in its movement. Filaments in the colonies can slide back and forth against each other until the whole mass is reoriented to its light source. Microscopic contrast method : Differential interference contrast. Capturing device: DSLR Canon 5DMk2 with Microscope adaption. Captured field width : 0, 17 mm. Magnification on Sensor :212x