missing reflection in VRAY

[martin.savel]

Dear friends,

 

I have a problem i cannot solve. I tried everything i would imagine.

 

I´m posting a render of my unfinished scene. It´s a simple kitchen, top cabinets have a material "A" on top half of the door (bottom half is ALU frame with sanded glass), lower cabinets have the same material "A" on the door. Between these cabinets there is a wall covering with the same material "A"!!!. On the wall covering there you can see reflections which are OK, nice and "believable", but on the door material, which is the same, there is bad reflection. I placed a simple blue cylidner into the scene to see the problem. You can see that the door seems to be flat and "amateur like and simple".

 

I am really going mad of this, do you have any solution? I don´t know if i should have shoot my computer or myself:([ATTACH=CONFIG]41415[/ATTACH]

 

Thanks in advance for any advice, Martin.

[Ismael]

Your issue being one of reflections, go to the following address and read on "Mirrors—the science of reflection."

 

http://www.explainthatstuff.com/howmirrorswork.html

 

"What happens when you look in a mirror? In the daytime, light reflects off your body in all directions.

That's why you can see yourself and other people can see you. Your skin and the clothes you're wearing

reflect light in a diffuse way: light rays bounce off randomly, haphazardly, in no particular direction.

Stand in front of a mirror and some of this light from your body will stream in straight lines toward it.

Rays of light (which are really packets of light energy called photons, fired in a stream like bullets

from a machine gun) shoot through the glass and hit the silver coating behind it (possibly a real coating

of silver or more likely something less expensive such as polished aluminum). The light will reflect off

the mirror in a more orderly way than it reflects off your clothes. We call that specular reflection—it's

the opposite to diffuse reflection."

 

Bottomline, reflections are all about light. In your case you can tell that the light being "reflected"

off your blue drum is much less than that which is falling directly on the area of the door in question.

The direct light is overwhelming the dim reflection and making it look as if it is not there, gone.

 

Stop imagining things and please do not shoot anything or anybody. Kitchen is looking good, do post a follow up.

[martin.savel]

Hello, few moments of working on the scene. Reflections solved somehow but there is another problem.... Scene seems to be full of light, there are no "healthy looking" shadows. Scene looks unrealistic as you can see on the picture.

 

But, there should by standard daylight from outside - it is made by two VRay lights (invisible) at windows for diffuse light and one direct light making a sun. It is done.

 

The kitchen has another lights. Each cabinet has a special bottom part of aluminium frame with frosted glass, which have lights inside. These are created by VRay lights again (double-sided to emmit light down below and also up, inside the cabitnets).

 

When i turned on only "outside lights" scene is 95% OK, but i need the kitchen cabinets to be on. When i turn only these cabitets lights, scene looks 95% OK again, but there is low light in the room of course. But, i need both, in reality it is possible.

 

Problem is, when i turn everything ON, i cannot see shadows where they should be. For example on the lower pale green cabinet doors - there is on the upper side a hole with aluminium handle. The same as on the wooden doors on tle left side. On these pale green is almost invisible. Beside this, scene seems very unrealistic. I suppose, this "no or very weak shadow" effect is because there is toom many light emmitors in the scene. Maybe the VRay light is not the best because its shadow sharpness is controlled by light size, and my lights are quite large.

 

But i need both of them, i need daylight and i need these "light desks" in cabinets to be on. How to solve this? [ATTACH=CONFIG]41432[/ATTACH][ATTACH=CONFIG]41433[/ATTACH][ATTACH=CONFIG]41432[/ATTACH][ATTACH=CONFIG]41433[/ATTACH]

[Ismael]

The backsplash has too much face forward reflection, use Fresnel. Reduce the intensity of the under cabinet lights. You say that interior or exterior (Sun lights) by themselves look 95% ok. Does that mean that you do not readjust Exposure after changing? No problem with that if it works; but, if you Sum-up both interior and exterior lights and it is too much, simply increase the shutter speed (I assume you are using a Physical Camera). If other camera or old Vray; then, must adjust intensity of offending lights. Also to get small details you must turn on reflective GI and calculate a very High Quality GI.