vray interior render drark!!

[Fran]

I recommend to everyone who hasn't already, to read the online documentation that Vlado has posted. Whenever you use a 3rd party plugin, it is always best to learn about and use their proprietary lights and materials, since they are optimized for the engine. Also, having the proper scene scale is a basic concept of modeling and rendering. If you want to go very far in this industry, you'd better learn that lesson quickly.

 

Good catch on that one Danil. And it's usually only caught when someone is nice enough to take the time to examine a troublesome scene. It is common for people with no background in CAD to not understand the concept of scale.

[dagor]

2 Fran.

i have not much free time. there are some other mistake IMHO, like flat polygon, holes, unwelded points. i`ll say about it a bit later. know i must do my own work. and you were right. reflective caustic can bring brightness to this room because there are alot of reflective material, but it`s too expensive for render ))))

 

2 meme131

check your geometry with STLcheck modifier. your geometry mistake dosn`t affect brightness in scene, but sometime it can bring artefact to render.

[meme131]

okkayy thanks dagor i will check these about the standard material i couldnt get the effect i want with vraymaterial and the scale u r rightttttt i forgot it thanks for ur effort:)

[meme131]

can any 1 tell me plzzzzzz why does the physical cam render the scene inverted i used the physical cam b4 but it never happened b4!!!

[dagor]

can you post image with problem? i never have had problem with phiscamera.

[meme131]

the image is rendered inverted like this 1 but the 3d view i can c it straight it never happened to me b4 try to render the physical cam i gave u it will be inverted also

[sile]

Dagor, thanks for sharing settings about v ray sun/sky and phycical camera.

But you can't say for method from my previous post that is strange and illogical. It is basic v ray settings for someone who is a beginner with v ray. Don't forget Osmosis's tut (Study Hall) I think that this kind of settings, v ray lights(or v ray light mtl applied on the plane object) in front the windows, enviriment light and direct light as sunlight is the best for someone who has just started with v ray. To be able to understand how the things works.

V ray sun and sky without v ray plane light could not provide good result in interior scenes

[meme131]

thanks sile for sharing ur comments with us i guess i argee i like the direct sun effect with skylight envi. and reinhard coloring map soo what do u think

[dagor]

2 sile

i don`t see Osmosis tut.

in last version there was big changes. Sun+sky+phiscamera in RC! fixing of real light unit in RC4, simple poltal in final.

all of this changes make forkflow more simple.

the typical simplest workflow is:

1. set sky+sun (i don`t touch it)

2. set phiscamera, udjust ISO, f-stop, shutter...

3. set up lights with REAL light unit.

4. tweak color mapping a bit. (for me - just burn for reinhard 0.8-0.95, and sometime dark \ bright mult for exponenta). it`s not necessary because it can be tweak in post wih 32bit render.

thats it. no more tweaking! only 3 point in all workwlow!

so if you want do night render - yea its realy simple with this workflow!

1. tweak sun+sky

2. tweak camera

3. don`t tweak light.

4. tweak color mapping a bit.

 

It`s my workwlow, i don`t say it`s only one right way to get nice render.

but it`s realy simple. do you know more simle way?

 

meme131`s method is strange and illogical

he set`s up irradiance primary 1.5

it`s make GI more active, more saturaited, it`s kill direct shadow, GI artifact will be more visible.

and coloring map HSV exponential dark=5 light=2.5 - yes this make image lighter, but phiscam do it more accurate.

 

you say about vraylight in window, for tweaking intensity you must pick every windowlight and tweak it mult and color - what if i have 10 or 20 window in room )) ? it`s too long. use sun and ajust only one mult!

using plane with lightnaterial in window - not good idea with irmap and lightcah. ligtmaterias isn`t direct light. it work only with GI and your GI settings must be very hight!!!

 

you say that V ray sun and sky without v ray plane light could not provide good result in interior scenes - use portal (simple portal) in window. it convert skylight to directional light with color and intensity of SKY.

 

everyone choose his own way. it doesn`t mater how you make you image photoreal. only final result can say you good or not good artist ))

i choos simplest way, i have over 20 window sometime and over 100 lamps in interior.

 

 

2 meme131

sorry, but i can`t continue testing your scene. i have alot of work.

i`ve check you phiscam - it`s realy bug.

try to fix your scale of project and make new cam.

i`ve merged your file in new scene and fix scale and geometry. my phiscam work fine.

i`ll continue as soon as possible.

[meme131]

thanks dagor for ur reply first of all i am a she not he

second i knnow ur settings gives more a dramtic look to the scene i like it but it washed out the walls i feel it lost its identity

thanks for ur help

[sile]

Hello Dagor,

thanks a lot for your post.

I have lot of problems with v ray sun and sky and physical camera.

I use settings from previous versions, before vray sun/sky/phys/cam and always tend to get similar results. There are some renders I saw done with

vray sun/sky/phys/cam and it looks extremly realistic.

But I didn't know for technique with sky portal. I'm testing some scenes with that. Thanks for sharing Dagor.

But another thing that bothers me: with vray sun/sky/phys/cam can't get nice shaded parts. I use Irm with light cache. I noticed that qmc as secondary bounce gives nicer result for shaded areas. For example, the shadow under the sofa, soft shadow.

I don't know if I was clear with this, probably not :-)

I'd like to know what metod do you use for primary and secondary bounce.

 

And I forgot the most anoying thing with vray sun/sky/phys/cam, unrealistic blue shadows. I know that there must be a way for tweaking that, maybe white balance within physical camera.

Dagor, do you use irradinace map + light cache for final production?

I use that but with vray sun/sky/phys/cam simply can't get nice result.

I will tried qmc of course but the render time... :-)

 

Anyway, thanks for your comment!!!

[sile]

I was experimenting with vray sun/sky/physcam a lot since my last post.

I managed!!!

Without additional lights infront of the windows...

Only vray sun/sky as light emitting objects. Left as default. Only changed position to get willing sun coulre and atmosphere.

Colour mapping exponential, everything on 1.

My problem is: clients usually want faked images, I mean, some areas with more light and that is not always realistic. I feel that traditional v ray system is better for that, but v ray sun/sky/phys/cam could provide more realistic result. But it all depends on many things :-)

 

Thanks Dagor!!! Spasiba!!!

[dagor]

2meme131

i`m sorry )) sometime it hard to detect she or he

i`ll render your scene and share it with you but some later. i have alot of work. 3 projet in our firm and one freelance waork. i`ve give you all advice wich can help, so use it or try your own - it doesn`t matter how you`ll get nice render )). add some lamp or light inside room. it helps compensate overbright.

[dagor]

For prim GI i use Irmap. For second i use lightcash. It`s fast and enough quality for me. Usualy i make 4-6 render per room. I store Irmap and lightcash in file and then render images. It`s like flight-throught animation but only 4-6 frames.

Blue shadow is realistic )) take white paper and compare all white thing in room with it in daytime. If you don`t want blue shadow - use white balance in camera. also turn on lamp inside room. usualy it have another color than blue. for example bulb lamp light orange.

QMC (DMC in last version) produce more good result because it not intepolate sample like irmap. but it`s realy long for my laptop))

 

there are not law or rule in visualisation. i share my workflow but it`s not onl right. my friend have another worklflow. they tweak sky and sun mult!! thay change sky color over colorcorrect plugin and have realy nice result. you can try all diferet workflow and make our own )))

 

my client also like more syntetic unrealitic nice image. its always different thay want. one of them like polyshed floor and i make my floor realy reflected. much more then in real life. other of them want see light from table lamp in daytime. it wouldn`t be see in real room with big open window - and i increas mult for tablelamp. it`s always depend on client, his psyhology, favour, inferiority complex and so on... ))) i must sell my image anyway in spite of like or unlike it ))) this thing not about render but you can take it in attention for your bussines ))heh sorry for my offtopic ))

[dagor]

meme131

 

so how it`s going?

i`m still have no free time to fix your scene, but i`m realy interesting in your progress. may be new image?

[meme131]

thanks dagor for sharing i was just too busy working on another project today i am back to the bathroom with alotttttttttt of details

i will start rendering tomm.

i will share my new pics as soon as i have one

[meme131]

hello every 1

sorrryyyyyyyyyyyyyyy for being late ... i was really busy with this bathroom

these r almost my final render

i will b happy to hear ur comments thanks to u all

[sewjunekeong]

very good suggestion! thanks alot

[alex3d]

old school:

use a huge light just behind the camera.

[antigonikost]

-Does anybody knows how can i reduce the grain of my scene?(Maybe in photoshop?)

It's an interior scene without windows.I use vray plane lights and only 1 traget direct out of the building.

I use light cache, 800x600, min/max -4/-1, i have a little glossy mats, wood textures, and a lot of models.

I' dont know if i have done the correct Render setuo beacause i'm a begginer.

-How can i save the archive with all the textures and models without missing anything?

-I

Uuuuf Vray is a disaster without classes:(:(

[swarthykhan]

what is the reason having a direct light out of the building if the interior has no windows?

min -4 and max -1 may be considered low for a resolution of 800*600.

the best way to reduce grain from your renders as i use it is to apply linear workflow and under color mapping check the box that says adaptation only while keeping gamma 2.2 and use vray frame buffer to see the actual render while keeping in the rgb space (meaning don't click srgb on the lower right button if you do it will be gamma 4.4).

for that resolution use irradiance map with a high preset and for secondary bounces use light cache at least 1200 subdivs. as for the adaptive dmc settings take your max to 8 and lower the color threshold to 0.005. keep all other settings at their default. lets see what happens.