Chaos Corona for Cinema 4D > [C4D] General Discussion

Reflections doubts

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Stefan-L:
if you are using the new physical material make sure to lower your ior for most materials. ior 1.5 is ok for glass like things, but most "normal surfaces" have less reflection strength

as one cannot dim the reflection any more via the reflection color you need to make that via lowering the ior to get realistic reflections

mascab:
I agree about lowering the ior to get a lighter reflection.

But I still don't understand how it is possible than in a reflection very near to the object (for example the one with the dishes) I can find "information" that aren't present in the object itself.
It can't be possible that, in almost 10cm, there is a difference in light direction to achieve such a result.

I work in 3d since 2004 and I never had such a strange behaviour...

Pepelecrabb:
The angle of incidence of a light source is equal to the angle of reflectance which is always true,  the angle of the camera and the angle of the subject plane receiving light are independent and variable.
I always think of shooting billiards, bouncing a ball off of a bumper when setting up lights.

romullus:

--- Quote from: mascab on 2023-03-24, 23:04:17 ---But I still don't understand how it is possible than in a reflection very near to the object (for example the one with the dishes) I can find "information" that aren't present in the object itself.
It can't be possible that, in almost 10cm, there is a difference in light direction to achieve such a result.

--- End quote ---

Apparently it's very possible. Look at the attachment - the phone can't be any closer to the hand cream tube and yet reflection on its screen is so much brighter than on the tube itself... exactly like it is in your renders ;]

davetwo:
Also see example from my kitchen.

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