Bullet proof ...

[Sergio]

Hi all,

I got Christopher's DVD's interior and exteriors, and still not getting any good results, plus I was checking tutorials from Chaos's web site, this forum, and help files too.

Looks like I got some difficulties with learning setups.

Is there some "bullet-proof" start, some basic settings, with no "burning" objects, short rendering times, and build-up slowly towards good picture? V-ray default settings are not as such. If I put daylight system as my light, and render with V-ray, picture is burned, than I have to go to the sky, and lower intensity to maybe 0.4 in order not to "burn" rendered model.

I did not found one tutorial with actual exterior building. All tutorials are with some teapots, cones, or interiors. Even Chris's DVD is about bridge (exterior), not house or some architectural building. Christopher is the man! but maybe too advanced for begginer like me, in Vray at least.

Can anybody help, please.

[ecastillor]

for the burn issue, check to see that you have exposure control turned off...

 

http://www.cgarchitect.com/vb/showthread.php?t=14856

[Sergio]

Thanx ecastillor for reply, but I wish that was something easy like that. It will be very helpfull if somebody can please give me an idea about intencity of Daylight setup in candle light etc.Or maybe .max egzample...

 

Regards

Srdjan

[BrianKitts]

I'm not sure I'll call it bulletproof.... but my preset for starting a scene is pretty solid.

 

See attached settings.... and take note that reflections are turned off and I use the material over-ride. This is the start point, once everything looks good from this point then you adjust to settings for a final render.

 

From this I start with lights @ like a 60% mult. and then go up from there. Once I get the lights the way I want... I turn off the material override and turn on reflections... add textures and do any last light tweaks.

 

 

 

 

Although as a last note, if you really have gone through chris's tutorials, you should already be at this point because that's pretty much where I got them from. He knows his stuff... watch the disks a couple of times you'll get it.

[Ismael]

Note: For Daylight System and Photometric (web) luminaires only. Standard lights and Vray lights not affected>>>>>>>>>

 

Even if you uncheck Max Exposure Control, the Physical Scale setting of it will still affect the render. What I am saying is that is not enough to just turn off the Max Exposure by unchecking it. You still be best advised to keep the Physical Scale setting; regardless if it is suppossed to be "off" when you unchek it, or if it is set to Log, Lin, Auto, Pseudo, to its default 1500 for all Vray scenes with IES and play with IES multipliers, or set the Physical Scale to the level of the brightesss photometric luminaire in the scene. This is a Max thingy behavior with IES and not a Vray one. This I have found to be true at least up to Vray 14703. Have no idea what the latest Builds do.

 

That I mentioned before here: http://www.cgarchitect.com/vb/showthread.php?t=13702&highlight=Ismael

 

Also I do not know if this is addressed in those DVD's by C. Nichols

 

Cheers,

 

Ismael

[Christopher Nichols]

Generally I would not use the Max Daylight system, you are just asking for complications. While the IES lights can work for the interiors, for an exterior scene as general starting point would be to use a sunlight (with a normal light) and ambient color. Start with a color for the ambient light (a slightly blue color) and a direct light with vray shadow for your sunlight. Then play with color intensity and position. The start swapping out your ambient light to an HDRI and possibly do what I do in the tutorial and use a vray area light for the sun. But basic basic basic set up... sun (direct light) and sky (ambient color). The artistry is what you can do with it after that.

[Sawyer]

One of the most helpful exercises I have done is to work with the Greeble plugin and create a room or a room like shape. you want direct light coming into a room and you can do that however you want. I have one I have used for interiors and one for exteriors. The greeble gives unlimited details and it will really give you a good scene to bounce light. (It's simular to the scene Chris has on his interior dvd with all of the blue boxes). Actually I have used one that let me set up interiors and for exteriors. It's also good for testing sky domes or HDRI's.

[vizwhiz]

Sergio

 

are you using VIZ or max??

 

i believe There is a way To SAVE rendering PRESETS to a PRS file

maybe This could happen with The VRAY settings and people could

 

share These by uploading and downloading and see if This works

 

"vray-settings-base.prs"

"vray-settings-high.prs"

 

etc

 

just an idea, i save out mental ray settings to prs files

so This just might work with VRAY also, hopefully it will

 

Thanks

 

randy

[Sergio]

Hi ecastillor,

thanx, I got your point, and I read articles, as a result, by changing to 2.2, my preview in the Max was very bad, was not close to what i see in the windows picture viewer. Though, I do have a problem when printing images, they temp to be darker. I can not understand, by making my preview in max lighter, i will temp to darken up the image, and as a result, final image is going to be even more darker. Most probably I am doing something wrong.

 

Hi BKittsARC,

thank you for sending me those images. It helped a lot! At least I got good starting point, renders very, very quickly, and gives me chance to change parameters and improve it. You made real change, and helped me take first steps in V-Ray.

 

Hi Ismael,

thank you for your post. I have tryed to open automatic exposure, and I untick active, and changed phisical scale values; did not make any difference, i did not want to tick active, in which case will change my picture dramatically.

 

Hi Christopher,

Thank you for your input! I realised that using daylight system, i was looking for trouble, direct light is more simple light, at least for beginning, and adding HDRI in GI Environment, did make dramatic change, as also BKittsARC mention in his "bullet proof" quick start.

 

Hi Sawyer,

thank you for your input.To be honest, I am so busy with work, I hardly sleep at night, and I did not have chance to open hristophers interior DVD from the box but I will do that in couple of days time, I promisse.

 

Hi vizwhiz,

I am working in Max, and was looking for that file option and could not find.

 

I need some time to digest, all those nice ideas of yours, again thank you all, you can not imagine how that was a nightmare for me. When I finish my model, I will post it here in this thread and we can discuss further.

 

You guys rock!

 

Regards

Srdjan

[Sergio]

I almost forgot to add, I am using direct light, and vray shadow; for now what i miss is nice shadow, the one like raytrace. In fact I can send rendering, in the current stage iam in, and you can see what i mean.

 

Regards

Srdjan

[Sergio]

Hi all,

I am posting some rendering of Front and the back of the house. Asusual, I am not very happy with outcome. I can see lots of color bleed, of the roof and the grass, is there a way to reduce colour bleed?

Thare is a roof material courtecy of Sirk. I did not follow his way of making the displacement, instead I used Vray material, and in slot for displacement (not displacement modifier rollout) I inserted garyscale image. Not very happy with outcome, but trying to use displacement modifier rollout gave me some more wierd results...

For windows-glass material I used SimianArchGlass, with no good results, aldough I used HDRI environment.

I will appretiete your comments, and suggestions.

 

Regards

Srdjan

 

P.S. I am uploading my settings too.

[Sketchrender]

I am not an expert but , I would .......

 

1. Untick the hidden lights.

 

2. For the indirect illumuination , unless you have a big machine and lots of time reduce the setting to .7 and .5 , it will save you time.

3. secondary bounce .use the default QM.

 

4. built in preset, set to low for a start, medium when you are happy , and then let it rip.

 

5. Caustics are on , there is no reason for it to be on?

 

6. Enviroment settings skylight is way too blue , bring it down to a hint of blue, take off the second one you don't need it. Place a sky in the first slot, and in the back ground, it makes a different to the over all light , (I think)

and to the refections.

 

As I said i am no expert , but these are my general setting, and i mean general.

 

Best of luck.

 

I am sure i will be corrected on some of these but give them a go.

 

 

Phil

[Ismael]

It may prove to be a good study for you to do these daylight tutorials:

http://www.osmosis.com.au/info/tutorials.htm

The Glass material they use is simple (not advanced) but is effective. Those tutorials are famous in the Vray community. It is a scene of a Study Hall with Daylight and the scene is rendered from the interior and then from the exterior. I am sure that you will learn enough from those tuts, that when you get back to that house you are working on it will be a breeze.

 

Your repply to my statements:

"Hi Ismael,

thank you for your post. I have tryed to open automatic exposure, and I untick active, and changed phisical scale values; did not make any difference, i did not want to tick active, in which case will change my picture dramatically."

 

If you read the opening line of what I said:

 

"Note: For Daylight System and Photometric (web) luminaires only. Standard lights and Vray lights not affected>>>>>>>>>"

 

Later on you state that you are using a Direct Light with Vray Shadows. Well, a Direct Light is a Standard Light and that is the reason you did not see any of what I said. The note is for Max Daylight System, IES or Photometric Luminaires like those from Erco or Max Photometric Lights.

 

Cheers,

 

Ismael

[Sergio]

Thank you Philip!

Thank you Ismael!

 

for your suggestions. I am bit busy these days, but have to learn those skills as soon as possible. I was looking at http://www.osmosis.com.au/info/tutorials.htm and looks interesting, only problem I can not download scene, Studyhall.zip, anybody have alternative link to download?

 

Regards

Srdjan