HELP! Different results between local render and net render

[Philby3]

Hi All. We are having a strange problem I'm hoping someone out there knows the answer to:

 

We have created a scene for a 400 frame fly-through (Max 9 SP2, Vray 1.5R3, Vista32). When we render a single frame, or sequence of frames, through Max on the local machine to check lighting, sampling etc, we get the result we want. However when we then send that same job to network render, through Backburner, the render nodes (Max 9, Vray 1.5R3, XP Pro), as well as the local machine we first tested on, give a different output quality.

 

This different output quality appears to be the same as previous test outputs we tried before submitting the final job. (In the final job we had altered the light settings, and downed the sample rate slightly, whereas in the net rendered job the lighting issues were present again, and the detail - see chrome handrail - tends to suggest the higher sample settings are still used).

 

Has anyone else experienced varying end results between locally rendering a scene and network rendering the same precise scene?

 

We have tried re-saving the file under a different name and testing/network rendering - same prob. We have created a new scene, merging everything in, re-saving to a new name, testing/network rendering - same prob. We have copied the file and the maps etc folder to a completely different workstation and then set only the render nodes (no workstations) to render - same problem.

 

Any ideas or solutions?

 

Philby

[mayamax]

I think The Default gamma setting Of The 3dMax installed on different machines must be Having difference settings.

[Philby3]

Hi Hemant

Thanks for your reply, however, the original machine we test rendered on also has the poor output when we network render. The Gamma setting would be consistant for this machine at least.

 

Anyone else?

 

Philby

[Adrian Bold]

Don't use Max? hehe.. sorry Philby, we haven't come across this before.

[Philby3]

(thanks Adrian... nice one (mayamax - very close with the default gamma - but it is default lighting instead)

 

Ok, just in case anyone comes across the same problem, I think we have found an answer.

 

Problem seems to be that we only had Vray light materials in the scene, and no other lights. When viewing / rendering from the workstation the default lighting used in Max played a role in adding illumination to the scene. When network rendering, these default lights aren't present - therefore a different lighting result.

[TeeBear]

Hi Philby3!

I think I have the same problem as u. Getting flickering in animation using 2 or more machines in the network. (using max and vray, irradiance map and light cache)

How did u resolve the prob.? Did u put a standard max light in the scene somewhere?