Some Problems

[eMeL-ViZ]

Hi there,

finally I got my vRay :lol: and was very happy and played a little bit around with it. I Loaded down the cgtalk test Scene (kitchen) put a Light Source outside the Room and Rendered it. What came was really great.

http://img487.imageshack.us/img487/4605/forenbild01is4.th.jpg (http://img487.imageshack.us/my.php?image=forenbild01is4.jpg)

I thought that I could Render Images like this but what happens to my Renderings is really unsatisfying.

http://img487.imageshack.us/img487/6793/forenbild02wq0.th.jpg (http://img487.imageshack.us/my.php?image=forenbild02wq0.jpg)

Can anyone tell me whats wrong here? I tried to copy the Materials, settings and everything else. It still look bad.

The Physical Cam settings for the Kitchen are :

F-number : 4
Shutter Speed : 150
Film ISO : 100

For the "LivinRoom" they are

F-number : 2.8
Shutter Speed : 150
Film ISO : 200

Has anyone a good Idea?

thx,

Moe

[Fluffy]

The blown out sun light can easily be corrected using color mapping (and the AA on high contrast areas using subpixel mapping and clamp output).

The scene is lacking in details and objects, the focus of your scene could be better but nothing is really wrong.
You can easily improve this by working on your materials a bit, get a bit more reflections on your floor, add some more objects and find a better angle for the scene.

I think you could try and get more contrast out of it as well, by increasing the f-number, so that the image is less bright.

[eMeL-ViZ]

Thanks Fluffy,

now you mean that there is "no life" in this Scene. I must confess this is right. I added some Objects into it and changed the settings you mentioned. What came out was this :

http://img379.imageshack.us/img379/5243/forenbild03bm5.th.jpg (http://img379.imageshack.us/my.php?image=forenbild03bm5.jpg)

The materials are all from this forum. I have to learn much about the vRay BRDF. This is my first contact with this highly complex kind of Material. I will add some more detail to it and see what comes out. Thank you for your help. I will continue working on this. If there is anything else you can suggest, I am reading because I am still learning.

Bye,

Moe

[Fluffy]

Mmm.. the materials still need some work.
Look at references for the floor. You don't really need a bump for this type of hardwood floor, they are usually polished and you don't notice it from that distance. Since it's polished and stained, they should reflect, but not as much, and the reflection should be scattered since this is not a mirror.
So, get rid of the bump and increase the reflection glossiness to get blurry reflections.

You need to increase your GI settings as well, this is way too fuzzy right now (unless you are still rendering previews).

Still not enough detailed. Once again, look at references (IKEA catalogue, archviz images, etc..) if you are short on decoration ideas, and bring some life to this scene! Shoes, ashtray, books, curtains, moldings, pillows, blanket, and so on...

The lighting is a bit better but still need some work, and you have to work on that angle, it is still not fitting.
Don't try to show the window too hard, focus on the couch and chairs area, I think.

[eMeL-ViZ]

What about this one? I have changed the Floor material completely. i tried to create one out of a Arroway Texture. It reflects less than the last one. Also the reflections are more blurry.

http://i160.photobucket.com/albums/t185/real-RayMoe/Foren-Bild-05.jpg

I populated the Scene with a little bit more "life". I do not like the color of the Lamp. The Chrome and Glass Shaders slow down the Rendering very much. The materials are still a problem. I am waiting for the VrayforC4D Handbook if there is a chapter about the BRDF material. So I still used ready made Shaders from this forum and Tools4D. Till now I have 66 Shaders in my Material editor, and these slow my System down. I think I need more RAM.

Thanks,

Moe

[Fluffy]

Better angle, better details and better materials but you can still improve (yes, always space for improvements :) ).

The lighting is still not contrasted enough, we don't feel the light coming from the window. Did you add a light source behind the camera? Feels like there's illumination coming from it.

Don't try to jam every object in focus. You have too many picture frames in my opinion, and they are not centered to the walls since you tried to center them to the camera. Put the one on the right at a more sensitive spot on the wall (only my grandma puts picture frames near the edges of the walls), and get rid of the middle one. One frame should me enough, though.
The pictures inside the frame could use a little update as well, a little bit more trendy.

The blue lamp does not fit with the scene at all (shape and colors). I think you should get rid of it and set a lamp on the floor (halogen or else).

Finally, work on your GI settings, they lack definition.

P.S: A lot of my suggestions have to do with personal taste, so if you feel your design is ok for you, take my advice or not, this is your work after all :)

[eMeL-ViZ]

Improvement? Improvement is always good. There is no other light source than the one outside the Window. Maybe it seems that there is Light coming from behind the Camera because the Light bounces from this wall. I don't know. I am not too familiar with the GI System of vRay. I increased the Interpolated Samples to avoid the flurry look of the Lightning. Also I am Rendering the LightCache and the IrradianceMap in 320*240 (High Quality Preset) to use these Data on a 640*480 finalrender. My Machine would need several hours if I wouldn't do it this way. I still have only one AMD64 2Ghz (single Core) with 1 Gb RAM. While writing this post I am Rendering a new one with Lamps on the Floor. They are not the best, but also not my own work. The Lamp on the Ceiling is away also and is replaced with something more 2007 likely. Do you have a source for more trendy pictures to put into frames? I normally use personal pictures I have on my PC.

The GI settings problem is the same one like the BRDF Problem. I have to read a good manual to know what to do. I have worked with Renderers like finalRender and Maxwell, but this is vRay and so completely different than anything else I have ever seen. I feel like a absolutely newbie on 3D.

thx,
Moe

P.S. : Yes, it is my work. But I don't only do what you say. I am thinking about what you are writing while reading it. I see sense in it and I am learning also. You are a real help and I want to thank you. (Your gallery is better than mine :wink: )

[KevinJ]

Where did you get that test scene eMel?

[eMeL-ViZ]

Here is the actual Render.

http://i160.photobucket.com/albums/t185/real-RayMoe/Foren-Bild-06.jpg

I think that it is a little too dark (?). And what don't like also is the yellowish color of the ceiling. I know that this is something produced by the GI caused Saturation, but is there really no way to avoid it? I still have to model some good floor standing Halogen Lamps.

To KevinJ

This Test Scene is my own Work. The Lamp on the Ceiling and the two lamps besides the Couch are from a Object Collection I have bought. The little Sculpture on the Shelf in the Corner of the Room is a Download from I don't know where. The blue Lamp is a Download from CGShare. The decorative thing on the table is modelled by my Sister. The Borders on the celing and on the wall as on the floor are Extrude NURBS based on profiles made by my Sister. This is no Great Work. Very simple Models. Only for Testing purposes.

Greets,
Moe

[Fluffy]

You can get rid of the yellowish tint by adjusting the white balance parameter found in the physical camera (set a yellow or orange color, for example).
This is getting a little bit better, but I'm still not too fond of the angle and composition.
The lower right part of the image is empty and takes away the focus of the scene, the naked chick doesn't really fit with the scene, nor do the lamps on each side of the couch. My personal opinion, of course :)

Changing the wall color would probably bring more contrast. Try for a cold color, to contrast with the beige and light wood color of the furniture and floor.

P.S: No need to justify your sources, most people use object librairies. This doesn't take away from the quality of a work, if it's done with taste.

[KevinJ]

Oh ok. You mentioned the test scene (I guess it is the kitchen). Thats why I asked.

Man I can't wait.

KevinJ

I only asked because I am interested in the test file that was mentioned in his initial post. I am new to Cinema4D and looking forward to learning Vray. I am developing a design studio and architectural renderings is something my boss would like me to learn how to do. Hence my interest in the file.

[eMeL-ViZ]

Hi Kevin,

before I will be Misunderstood here, you meant the kitchen? The Kitchen is not my work. I found it in this forum as a link. I searched now again for it but can not find it. Sorry. I do not remember where this link pointed to. It was cgtalk when I remember right. Aks a little bit around and see if you find it. When I find it again I will tell you.

Fluffy, I will try the White Balance later. The first tests with it ended in a Disaster. :?

bye,
Moe

[Tong]

http://forum.vrayforc4d.com/viewtopic.php?p=1603#1603

:wink:

[KevinJ]

Thanks Tong and EMel

[eMeL-ViZ]

No Problem Kevin.

I have played a little bit around with the White Balance and I must say that it works really good. I need some more practice but should find out how to use it in Workflow.

This is what came out.

http://i160.photobucket.com/albums/t185/real-RayMoe/Foren-Bild-07.jpg

My biggest problem is the (Over)Saturation in the Renderings. I don't know how to eliminate the Tinting of the ceiling or Walls. Maybe I am wrong but I don't want to have Yellowish Ceilings because I have a light Brown Floor. In this scene I've got a result which is Okay (in my opinion), but in other scenes this technique doesn't always work.

bye,
Moe

[Fluffy]

This looks already much more realistic, even though you fiddled with only one thing : the white balance.
As for the color saturation, how did you lit your scene?
It looks like you have some light coming from the window, and some more behind the camera.

What color mapping settings are you using?

All this could lead to oversaturated colors, and has an impact on the GI distribution.

[eMeL-ViZ]

This is the one thing I don't understand. there is no other light source than the one outside the window. The Window is covering most of the wall in width. Maybe this produces this effect. The Wall is 800 cm in width and the Window is 600 cm in width. I don't know. My Color mapping options are :

HSV Exponential
White : 1
Dark : 1.5
Gamma : 1

Subpixel Mapping = yes
Clamp Output = yes
Adaption only = no
Affect Background = yes

Bye,

Moe