Render passes and blending modes

[branskyj]

Hi all,

Is there a "written rule" as to how the separate render passes should be mixed (what blending modes) in say Photoshop? So far I have only found that the AO pass goes only with Multiply blend mode.

Or is it all "whatever works the best" method?

 

Thanks guys.

[Devin Johnston]

This is a very detailed tutorial telling you exactley how to do it in Photoshop.

http://cg.tutsplus.com/tutorials/chaos-group-vray/compositing-v-ray-render-layers-in-photoshop/

[senrikyu]

I would be careful with that tutorial in the sense that compositing is definitely not something you can base on a recipe that works the exact same on every image. I think if you follow "rules" like this exactly, you might overlook a lot of opportunities for bringing out different aspects of different images. For instance, the shot might be a dark room or it might be a huge glass space flooded with light. Compositing the two images the exact same way might not yield good results.

[branskyj]

Thank you for that response. At least now I know it's all down to the specific project.

 

All the best,

Julian.