gazebo

Started by gao_jian11, January 03, 2010, 12:55:57 AM

Previous topic - Next topic

gao_jian11

Piled out of the rock.

Henry Blewer

The lighting is not so good here. If you were to bring the sun around so more of the rock face was lighted it would be a huge improvement. Then we may be able to help more. (Try a smaller 640 x 480 render to check out the light. It will; render faster.)
http://flickr.com/photos/njeneb/
Forget Tuesday; It's just Monday spelled with a T

Tangled-Universe

Quote from: njeneb on January 03, 2010, 08:31:59 AM
The lighting is not so good here. If you were to bring the sun around so more of the rock face was lighted it would be a huge improvement. Then we may be able to help more. (Try a smaller 640 x 480 render to check out the light. It will; render faster.)

I do not really agree. The lighting is interesting, because it is challenging to underlight your subject and to make it look good.
The only reason why I think you don't like it is because the shadows are too dark.
I bet when he adds a bit of Ambient Occlusion, ups the GI a step and maybe using soft shadows (though that's pretty slow) it will look really good.
He could bring the sun around, but personally I wouldn't do that too much.

Anyhow, it's all a matter of taste :)

Martin

Henry Blewer

Martin you may be right. Ambient Occlusion and GI may do the trick. I am not good using GI, so maybe you can give gao_jian some pointers.
I would try the ambient occlusion settings to white for color and 2 for strength of the surfaces.
http://flickr.com/photos/njeneb/
Forget Tuesday; It's just Monday spelled with a T

gao_jian11

Thank njeneb  and Tangled-Universe , I really like the strong chiaroscuro effect. But the above image is indeed too dark. I re-rendering, adjusting the angle of the sun, using GI.

gao_jian11

Bright[attach=#]

EoinArmstrong

Actually I prefer your second render :)  Nice concept and good rock mats/shapes.  I might introduce a little redness into the green your using.

Tangled-Universe

Quote from: EoinArmstrong on January 04, 2010, 04:03:47 AM
Actually I prefer your second render :)  Nice concept and good rock mats/shapes.  I might introduce a little redness into the green your using.

Completely agree here. This looks good as is. You've moved the sun around at the max I had in mind. Nice striking light and still lots of shadowed areas. Good dramatic lighting now :)

Martin

gao_jian11

I opened the soft shadows of the sun, but do not see significant results?

Tangled-Universe

Quote from: gao_jian11 on January 04, 2010, 05:35:39 AM
I opened the soft shadows of the sun, but do not see significant results?

The default diameter of the softshadows is 0.5 degrees with 9 samples.

The reason you can't see signifact results is either:

1) the softshadows diameter is too small. You could increase the diameter of the soft shadows and also increase the samples.

My sort of rule of thumb is:

0,5 degrees @ 9 samples
1 degrees @ 11 samples
2 degrees @ 13 samples
3 degrees @ 15 samples

This should give you clean soft shadows in the majority of cases.
Too low sample-amount gives noisy soft shadows.

2) The scales in your project are too large. 0.5 degrees is as in real life, so if you go for real-world scales and want to stick to 0.5 degrees soft shadows, then reduce the scales of your project (I mean powerfractal scales and displacements etc. etc.), but that's a real hassle often and getting the exact same result is impossible.

Martin

Henry Blewer

The second render is almost exactly what I had in mind. Nice work. I like the displacements on the rock face.
http://flickr.com/photos/njeneb/
Forget Tuesday; It's just Monday spelled with a T

gao_jian11

Thank you Martin, I have conducted tests of soft shadows.

Linda McCarthy

I really like your last render, gao_jian11- as is.  Great work!  Linda