Chariot

[Fadlabi]

Hi,
I do this chariot after I have finished Larry Shultz tutorial: Project Chariot

[alqadi]

good
it needs more work on lighting glass shading and the composting

[Carm3D]

Methinks the perspective of your 3D camera isn't matching the background plate photo. Try making a simple model of the road (straight lines, not pre-perspective'd) and use that to line the camera up.

And uh yeah I must agree with alqadi that the compositing needs work. The lightsource is clearly not lined up with the photo's sunlight direction.

[Fadlabi]

Thanks very much alqadi & Carm3D for your comment and advice ... here is anthor result

[Carm3D]

Camera matching is much improved. Now for the lighting. Look at the shadows on the lower left of the image. Make your CG shadows match those in direction and softness. Oh, and turn off the ambient light, for the love of the Easter Bunny.

[Fadlabi]

Carm3d .. I wil try your suggestion a bout shadow, Are you meant the direction of the background image shadow?

[Carm3D]

That's correct.

[Fadlabi]

anthor render

[Carm3D]

Much better. You still need to turn off the ambient light.

[nthused]

This is looking much better. After the camera and lighting are tweaked, let's work on the surfacing. Love the model, BTW. Great TV show.

[Carm3D]

Let me clarify something. I said you should adjust the camera so the perspective matches the background image. But that did not mean you needed to place the vehicle neatly in one of the lanes. If you want it looking like it's in the middle of a U-turn, that's fine with me. I just wanted to make sure the perspective matched the background and now it does. If you like how the vehicle is in the lane that's fine. But if you like the 3/4 view better then by all means restore it.

[Fadlabi]

Carm3DMuch better. You still need to turn off the ambient light.

and anthor render with ambient turn off

[Carm3D]

okay, I see what the problem is. If you turned off ambient lighting but we can still see all parts of the tracks that means they are reflective and you are using a reflection map.

Here's the deal.. Reflection maps can be your friend, but in the real, there is that ground the vehicle is sitting on... And that ground is blocking much of the atmosphere from lighting up (or reflecting) the undercarriage of your vehicle.

So here is how you fix it. Model a ground with a simple road. Put it in the scene. Tell it not to be visible to the camera but does cast shadows and rays. If you want to get fancy you can try UV mapping your background plate on this ground.. But that is for extra credit.. If you do this you can use radiosity and the bounced light hitting the vehicle will match the look of the photo.

I know you have a shadow-plane in here catching the vehicle's shadow for the road. This might complicate things. You might have to render the shadow and the vehicle seperately then composite them after the fact.

[Fadlabi]

Hi, Carm3D
firstly very thanks for your support , I will do what you suggested and tomorrow you will see the result.

Best regards
Fadlabi

[Fadlabi]

anthor render

[Carm3D]

Hmm.. the treads and that dark dish thing on top are still illuminated from something. Tell me, do you have more than one light in the scene? It should just be the one sun. I'm looking at the specular hilights on the seats and it seems to me you either have more than one light or the sun is not coming from the light that is casting the shadow.