Light Fall Off

[keraj37]

Hi man, look at my attachment - if u are using 3ds max and mr it will help. Try to play with falloff parameter or far attenation, If u dont get it how it works let me know

[PEN1]

Sorry, I forgot to mention that I'm using maya 2009 with mr and the titles of the settings are a little different from max. I'll keep testing though....


Thanks

[rochre26]

You could set the decay rate of the light to linear or quadratic (probably linear). When that doesn't get what you want you can play with the intensity curve.

[sqrt]

When rendering with quadratic lights you will get a very intensive point with a fast fall off. so to counter that effect you need to linearize your scenes textures and then use a lens shader or in composite reset your gamma to 2.2 or any other gamma curve you like to use ex. canon. this process make the lighting lots more realistic.

A fast way to linearize your textures is to use mayas own gamma node. input .4545.
this will be calculated in rendertime so it will slow down your renders. so the best way is to make your texture linear before you import them to your 3d app.

When you linearize a dark 8-bit textures remember that you are crushing down the data in that image and it can be hard to get that data back. so before you gamma down the image make it 16-bit if the texture is dark.

happy rendering! :D
Stefan

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.