Vray Sun/Sky - Photo Comparison

its far from pointless. Personally I’d been thinking of doing the exact same thing. Why? So I could get a better and more precise understanding of how vray’s sun and sky works. I like to know how things happen and why, its just my nature. Does it mean Ill be working to make all my future renderings completely photoreal? Far from it.

I don’t care to be a physicist, I just want to understand my tools better. Think of it like a painter experimenting with how his pigments look in different lighting setups, and mixing different pigments so that he better understands color.

For the shadow issue, in the photo, is there something bouncing light back from the right?

Rerender, you beat me to it. Yes, I realized that there is a building off to the right, and though it is quite a ways off, obviously has some influence. I’ve built that into the model rendered below.

I also realized that I was making a big mistake. I didn’t account for the sun being blocked by the clouds so left the intensity multiplier at 1. I figure that the clouds are blocking, maybe, half the light so dropped that down to .5. I also wanted to give Vray Sky one more shot. Since the sunlight was cut in half, I knew I had to give the sky more kick. Vlado mentioned in another post about putting the Vray Sky in an output map. Since I don’t know too much about it, I just started moving sliders and adjusting numbers and fell upon a combination that worked very well. I really have no idea what I did so have posted the output map so people could explain to me what I did. Whatever the case, I am getting closer to matching reality. What’s amazing is that the camera settings and the vray camera settings are identical. To me, that was pretty cool.

You’re getting pretty close there.

Oh, and the 255/255/255 issue is why on sets and such, they’ll use neutral gray in addition to white for calibration purposes.