If you have a bright conical beam front light, you may have experienced shouted objections from oncoming cyclists. You might then be tempted to tilt the light downwards. Unfortunately the bright, narrow central cone will form a small bright spot on the ground. Beyond it you will see very little, because your eyes will adjust to the bright spot. Also, you may find that the outer cone of light is still too bright for oncoming vehicle operators. There is no good way to adjust a conical beam front light.
