Good afternoon!
There were 2 problems! When doing object rendering, there is such a dark rim around the light object. If this is a dark object, there are no such problems. This is very important, because I’m working on a catalog and I can not admit such things. Background - Corona shadow catcher mtl. The settings changed in different ways and nothing helps. Maybe I did not understand something about this material?
The second problem is the gray background. When I used Vray, there were no such problems. At any settings of light and the material of the Corona shadow catcher, mtl still has a gray background, and I only need a drop shadow. It is very uncomfortable, because the printing is done on a white background. Further I can not twist fixtures and settings because the object is not realistic. Can you help me?
Sorry for my English, I’m from Russia.)
All pictures are attached.
AFAIK CoronaShadowCatcher for compositing mode only gives correct result when saved and comped in linear, i.e. 16/32 bit float.
So I can not save in png format? I tried to save in Tiff 16 and 32. The gray bezel decreased a bit, but the contour is still visible. The background remains still gray.
Save it to exr. If done right, it should not produce any visible contour.
Regarding the grey background, i’m not sure what i see. If you applied shadowcatcher to a vertical wall, placed near to your furniture, then i think it’s simply a shadow from GI of the furniture.
Excellent! With the format ex worked! Thank you so much. As for the gray background, yes this is a normal render studio, probably to be perfectly clean and the shadows were only on the floor, I need to clean it manually in Photoshop via the alpha channel.
Thanks again)
Glad to help you :]
As for the render studio object, i would simply replace it to flat plane, that way there would be no need, or at most very small cleanup needed in photoshop.