hi, my first try with an interior + vray. get the problem that the image is quite dark (also after post, this one is without post). is there a possibility to brigten up the rendering without using artificial lights? also think of something like hide glass from gi…
next is that i woluld like to reduce the color bleeding of the floor in the ceiling.
settings: vray sun 1,0/ sky 1,0/physical cam: f-number:5,0, shutter speed: 300, iso: 100; reinhard burn 0,3
You can solve the color bleeding problem with a VrayOverrideMtl:
To me, the SSpeed value is too high, you can try something like 100 or less.
First of all pretty render, it has great potential. Second, you’re worried about artificial lights but not artificially changing the calculated gi bounce? What’s the difference 
A starter, is if you were in this interior, the camera needs more light to get a better exposure, and your environment outside would be much brighter.
ref: Tufenkian Antiques Private Site
I don’t think you need “artificial lights”, but I would find a balance between upping your dark multiplier on your color mapping a bit, and brightening outside considerably!
Looks great, keep going,
-Colin
use materials with .5 brightness for less colour bleed, they will also be a lot darker as a result but have half the GI bounce.
also known as LELE’s method.
And otherwise compensate with your camera settings.
I use the override material method. Use your floor texture as the base material, add a vray material as GI material, then adjust the diffuse color to give you the bounce you want without the color bleed.