AO poor light

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AO poor light

Postby coilbook » Fri Nov 24, 2017 6:42 pm

coilbook Fri Nov 24, 2017 6:42 pm
Hi If you look at 2 images you will see pathtracing has great light but why AO light is barely lighting up three. It is a direct light so AO light should look the same as pathtracing
Even increasing brightness makes light light up a huge area around the tree but tree itself is still dim We have to use AO because it is animation we we need fast results

Thank you
Attachments
ao.jpg
pathtracing .jpg
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Re: AO poor light

Postby paride4331 » Mon Nov 27, 2017 9:09 am

paride4331 Mon Nov 27, 2017 9:09 am
Hi coilbook,
maybe there is some issue with the materials or the unit of measurement.
DL-AO and PT seem right.
Regards
Paride
Attachments
christmas tree.rar
(9.69 MiB) Downloaded 47 times
tr.jpg
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Re: AO poor light

Postby coilbook » Mon Nov 27, 2017 8:16 pm

coilbook Mon Nov 27, 2017 8:16 pm
paride4331 wrote:Hi coilbook,
maybe there is some issue with the materials or the unit of measurement.
DL-AO and PT seem right.
Regards
Paride



thank you

this is strange. tree is giant about 80 feet tall i will check the units
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Re: AO poor light

Postby coilbook » Mon Nov 27, 2017 8:36 pm

coilbook Mon Nov 27, 2017 8:36 pm
Hi Paride
Can you look at my scene attached and jsut switch between AO and Pathracing/diffuse there is a big difference. maybe this is how ao works? Thank you
Attachments
light bug.zip
(47.17 MiB) Downloaded 44 times
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Re: AO poor light

Postby paride4331 » Tue Nov 28, 2017 10:07 am

paride4331 Tue Nov 28, 2017 10:07 am
Hi coilbook,
your tree is 18mt, I don't know if you want this.
Said that, your issue depends on your emitter material, delete it and use a simply diffuse material with a black body node in emission slot.
My advice is to use simply geometry with emitter, to reduce noise and render time.
Regards
Paride
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Re: AO poor light

Postby coilbook » Tue Nov 28, 2017 3:37 pm

coilbook Tue Nov 28, 2017 3:37 pm
paride4331 wrote:Hi coilbook,
your tree is 18mt, I don't know if you want this.
Said that, your issue depends on your emitter material, delete it and use a simply diffuse material with a black body node in emission slot.
My advice is to use simply geometry with emitter, to reduce noise and render time.
Regards
Paride

thank you
I think i got it now. The tree is supposed to be very large. So we increased power level a lot due to its size and I guess diffuse gives additional light bounces thats why it will be way brighter. Thank you
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