As related in its datasheet, the FR60-2 flash illuminator emits a precisely calibrated light, with hotspots according to the below mentionned features :

- Horizontal beam spread : 20°
- Vertical beam spread : 12°

Experiments show that the light beam emitted by the FR60-2 is exactly the beam that was expected by calculation and simulation.

Inside this beam, the power of illumination is maximum. Nevertheless, far away from these specified angles, the emitted light can still be used with very good photographic results !