Reflections with include/exclude mode

[nicolas7755]

Hi everybody!

I'm working on some product shots of chrome faucets. I have a couple different faucets inside the same scene (pretty complex with natural and artificial lighting).
Each shot of a faucet needs additional lighting to create the exact lighting/reflection I need, without affecting the surroundings - no problem, I can do the lighting with the include/exclude mode inside the corona light (where I only include the faucet).
Now I also need to control the dark reflections in the same way: Usually black planes/planes with a gradient, that should be visible only on the faucet. How can I achieve this (I could render twice, but this is not what I want)?
I thought I could use a Corona light as well - but there's one problem: If I turn "occlude other lights" on, I get the look I want on the faucet, but obviously the rest of my scene is affected as well. If I turn it off, the reflection is not working the way I want it to.

Thanks for any help :-)

[maru]

So basically you want an object to be visible in reflections only in one specific surface? Do I get it right?
I am afraid this could be too heavy fake for Corona. 

[nicolas7755]

Hi maru

Thanks for your reply :-)
That's exactly what I want (well technically it's the client who wants it).
Understandable that this doesn't exist as it is completely fake.

[maru]

I'll let you know here if I come up with some idea.

[nicolas7755]

Great, thanks a lot!

[sprayer]

There is HDR Light Studio
what give you ability to  draw hdri map interactively so you can make several map for whole scene and  for override environment reflection for specific material object