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What's the difference between a point light and a linear point light?

yuyu.atemyuyu.atem Posts: 469
edited October 9 in New Users

Hi! Could you tell me what is the difference between a point light and a linear point light, please? When I load them, I have the impression that they look like the same, but I guess there should be a difference...

Thank you in advance!

Post edited by yuyu.atem on

Comments

  • WendyLuvsCatzWendyLuvsCatz Posts: 40,063

    linear one has more options but I thought that was for 3Delight because I cannot see any difference in iray

    someone correct me if I am wrong as would like more options 

  • yuyu.atemyuyu.atem Posts: 469

    Ah, ok, thank you very much!

  • Richard HaseltineRichard Haseltine Posts: 108,000

    A standard pointlight obeys physics - intensity drops as the square of distance (so if one object is twice as far from the light as another it  will get one quarter of the light, three times as  far it will get one ninth). A linear pointlight in 3Delight defaults to linear falloff (twice as far, half the light, three times as far, one third the light and so on).

    As WendyLuvsCatz says, in Iray all local lights have inverse square fall off so there is no difference between them.

  • yuyu.atemyuyu.atem Posts: 469

    Ah, ok, I understand! Thank you very much! laugh

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