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Opacity of any kind is taking forever
Hi!
I usually don't post anything here but this time i really don't know how to solve it.
Last year i got a job to render some infographics about how some valves work. I had to render the valve so it looked real and then i had to animate a little bit to explain the way they behave. In the animation i had to make the metal semi transparent for them to see the entrance of air to the chambers. Anyways. The semi transparency didn't work well in a vray material so i've managed to do it blendidng the metal with a standard one with little opacity and it worked just fine. And it was also super quick to render those frames.
Now i have vray 3.0 and i was again commisioned to make the same informative media for another set of valves. but when i try to reproduce any kind of semi transparency (vray+ opacity, vray +refraction, standard + opacity, standard + vraymap on refraction slot). Non of the methods are quick. It suddenly jumps form 3-5 minutes the frame til almost 25 minutes.
The Gi is ok and is quick but the render takes too much time on the semi transparent part.
i can send the file if you want. I don't attach it here because its 130 megas. So please if you have some ideas it would help a lot to find an answer.
Thank you in advance.
Me
I usually don't post anything here but this time i really don't know how to solve it.
Last year i got a job to render some infographics about how some valves work. I had to render the valve so it looked real and then i had to animate a little bit to explain the way they behave. In the animation i had to make the metal semi transparent for them to see the entrance of air to the chambers. Anyways. The semi transparency didn't work well in a vray material so i've managed to do it blendidng the metal with a standard one with little opacity and it worked just fine. And it was also super quick to render those frames.
Now i have vray 3.0 and i was again commisioned to make the same informative media for another set of valves. but when i try to reproduce any kind of semi transparency (vray+ opacity, vray +refraction, standard + opacity, standard + vraymap on refraction slot). Non of the methods are quick. It suddenly jumps form 3-5 minutes the frame til almost 25 minutes.
The Gi is ok and is quick but the render takes too much time on the semi transparent part.
i can send the file if you want. I don't attach it here because its 130 megas. So please if you have some ideas it would help a lot to find an answer.
Thank you in advance.
Me
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