Calibrating Light in Octane Camera Tweet

[rBourcois]

Hello,

I'm currently working on a scene where I calibrated a floor and a wall based on a background image.
I shot a picture of my desk lit by the sun at mid day.
I try for hours to light my scene correctly, but I can't seem to find a nice setup. Here is the result I get : https://imgur.com/a/19Ve1
Also, I have my geometry outlined in black/grey, which separates my elements from the background image. I guess this has something to do with my lights, but I'm not so sure about that. You can notice it on the top of the can : https://imgur.com/a/Lsmnw

This is another render without the wall : https://imgur.com/a/b5Bon

Do you guys have an idea of what I could do to remedy that ?

Thank you in advance,

Rémy

[rBourcois]

I forgot to link my scene, I'm sorry.
Here it is !
https://drive.google.com/open?id=1F7Ogh ... 8KJIjnNK4g