Colour cast from surface in Cinerender

[Anonymous]

I'm hoping someone can give me a shortcut to save me some time.

Basically, having done some testing I understand that when rendering in cinerender (specifically I am using 'Indoor HDRI Medium' slightly modified) the colour of surfaces that light hit is then bounced/transferred onto walls.

So I have for example a scene where I am using a parquet wood floor which is giving the room a slight brown/cream appearance. What do I change in the material setting (or in the cinerender settings?) to override this?

The below image is the same render settings, the only change is the floor material. I'd like to try and get white walls in both renders 🙂

Many many thanks in advance!

[DGSketcher]

I'm no rendering expert, but the first thing I would look at is the reflectance settings of the floor material. Create a duplicate of the material first just in case you completely mess up the appearance.

[Anonymous]

Hi DGsketcher. I have had a play around with a few different settings in the material to no avail. Like you I'm no expert but I did find that changing anything to do with surface colours had no affect. Deleting the jpeg however did - which makes me think the wood jpeg in this particular case is possibly the source of the actual colour which is not what I was expecting.

[Anonymous]

Hi, Dan G.

Go to the illumination Channel at the bottom of all channels in the surface, and there you'll see options like Generate GI, Generate GI Strength and Generate GI Saturation. Play around with these values, but I'm almost sure that the Saturation is what is going to give you what you are looking for.

[Anonymous]

I'm not sure how I didn't work that out now you've pointed it out! Makes complete sense. Thank you so much! Just for proof that it worked for anyone else reading see below. I went to the extreme and switch saturation to 0% in this instance. Wonderful!

arqrivas, you seem like you might not what you're doing? Any chance with some help on this? > http://archicad-talk.graphisoft.com/viewtopic.php?p=259935#259935

Thanks again.

[Anonymous]

Good that helps, anyway if you are trying to achieve realism, instead of just a good looking render, try leaving a little bit of saturation, cause at the end, everything affect the overall colors of a scene.
About the other post I'll give it a check next week. I'm not an expert, is just that I have a good amounts of years using cinema 4d and I have had this same problem before.

[Anonymous]

I completely agree with you re: leaving some saturation on. I think if using a physical rendering process where the sun gives you a coloured cast is worth leaving turned up a bit too. Here I guess I am really just trying to get to grips with how controls affect the image so that I can start knowingly making some decisions on how the finish product looks.

Thanks again for your help.