The color of the sky reflection (on the car) implies 'sunset', but the shadow direction doesn't.
I'm responding to the color of the reflection & spec. It looks very much like sunset in terms of color temp.
Pardon my questions:
Did you shoot a color chart & neutralize your HDR footage first? Did you do any grading on the final renders?
HDR - You might consider multi-streaming the render and mixing it all back together in the comp.
If 'realistic' is your goal, please remember that image based lighting (although awesome) isn't 'real'. In fact, everything in VFX is an approximated simulation: HDR footage is a limited sample of the available light available on location, the surface shader is an approximation of how light might be absorbed/reflected, Ray bounces are limited so the render times are viable.
As a result, you'll want to control the layers yourself so you can dial it in to the one thing the software doesn't have, an eye.
Compared to the final grade, most final comps in feature films come out of VFX shops looking more 'realistic'. Then, it gets hammered around in the D.I. where it falls apart before the surrounding shots in the cut.
You probably already know all this stuff, but it may be informative for other readers.
Thomas
I agree with everything you said. In VFX it's all about creating an illusion by tricking the mind. It's cheating all the time, lol. Sometimes something unreal is perceived as more real than reality.
For the final shot I'll be using separate render elements and compositing in post. The first test I posted here was color graded and the tilt shift effect some have commented was introduced in post (not proud of it and won't use it in the final shot that's for sure).
As for your other question, no I didn't neutralize the HDR. For now I'm only trying to get a rough scene that I can later work on to make the final version. I don't want to get too deep in this because I simply haven't got the time. I want to get this short film done and learn from it. The cg sequences won't last more than a few seconds each and will only be used for things that I can't shoot in real life.
Haha, tricky tricky!
I agree with the previous comment, about it almost looking like it was shot with a tilt-shift lens. Nevertheless, I will admit that I believed it to be real footage. Nice work!
I think the camera movement is nice, as well.
Do you plan to integrate this with real footage? Cuz that would be pretty awesome (though I'm sure incredibly difficult).
I explained the tilt shift in the previous sentence.
No I won't be integrating this shot with real footage, it will be full CG. What I have still to do is finish the landscape with bushes/grass/rocks etc.
Here's another quick test (done overnight just to keep the pc busy

)
This test has some obvious problems but I decided to post it anyway: the headlights light dispersion is not correct, it spreads too much to the sides, it's too close to the car, etc. There are no rear lights yet.
This is not graded, I only added a zdepth pass for some environmental fog (tinted blue). I have to reduce the bump map intensity on the road, it's way too much right now.
This scene will be at late afternoon/dusk when there is still some light but no sun.
The flicker you see is caused by very low render settings.
What do you think about the camera movement on this one?
https://www.youtube.com/watch?v=hiYY96B7EuY&feature=youtu.be