Lifetime Randomness

– Lifetime Randomness factor for particle’s lifetime. The pseudo random function is initialized with the Seed value

– Lifetime Randomness = 0: no randomness, particles’ lifetime is exactly the value set in Lifetime

– Lifetime Randomness= 0.25 : up to ¼ of the value set in Lifetime can be take out from particles’ lifetime

– Lifetime Randomness= 0.5: up to ½ of the value set in Lifetime can be take out from particles’ lifetime

– Lifetime Randomness= 1: maximum of randomness, particles’ lifetime can vary from 1 frame to the value set in Lifetime

– In this example note how particles begin to die at the very beginning of the video when Lifetime Randomness = 1 (video on the left):

– In this second example (400 frames) note how particles begin to die in the middle of the video (frame 200) when Lifetime Randomness = 0.5) and at ¾ of the video (frame 300) when Lifetime Randomness = 0.25  :

Blender