Interior ilumination problem

[ghost_one]

Hey i have a problem with lighting interior scenes , what exactly is the best method for brighting up a room i use Vray 1.5 and max . I have tried all the methods i could find , bumping up the primary GI multiplier wich doesnt work well because it also whashes out the exterior light coming through the windows , i have tried using the skylight portal on the vray lights ( placed on the windows ) for me it seems to do nothing

 

if you know something i don't , please help me

 

sry for my english

[chuck]

give this a try:

 

http://www.highend3d.com/3dsmax/tutorials/rendering/vray/147.html

 

it will bring up the levels of the dark areas for the most part...

 

chuck

[diegofer_9]

ghost one:

A problem regarding not enough light in an interior depends on too many variables. You should post the actual scene you are having problems with as well as how are you lighting it and calculating GI. this way you'll get more precise answers.

 

chuck:

I could never understand if LWF works if you use a LCD monitor, I am under the impression that the gamma correction for the LCD is differente than RCT. Is this the case?

[Christopher Nichols]

Most LCDs are calibrated to sRGB for compatibility issues. We use the sRGB curve here on LCDs... and I work with Throb...

[ghost_one]

sorry for not providin you with enough info , what chuck sugested did work to some extent and i do have a LCD monitor , setting the gamma to 0.454 helped, but to little to make a diference.Then i swiched to HSF exponential and se the dark multiplier to more that 2 , that lighted up the room but it also made my black look like gray

 

What i was asking in the first place is : what is the best method for lighting up an interior with light coming through the windows?

 

vraysun + aditional vraylights at the windows or just the vraysun with some aditional settings ( tricks ) that i don't know , or maybe just using a Direct Light , or ajusting the enviroment... that's what i was expecting. I did search the forum but there where no conclusive posts

[diegofer_9]

There is no one ideal way to light an interior in my opinion. It depends completely on the scene.

In my experience: If the openings that bring natural light inside the room are big enough, a sun and a very high environment are enough to ligh it nicely. I know LWF is the pro's choice but since I havent been able to understand it very well, I use Esponential color mapping for interiors, without going higher than 2.0 for DarkMultiplier so that render times dont go too high.

If the openings that bring natural light inside the room are too small, then I just add whatever artificial light is in the actual space, wether downlights or wall washers or whatever. Most of the times, even though is probably wrong, I get great results by adding an omni light with a very low multiplier and a Far attenuation to control it. It gives light wherever I need it, as long as I follow the logic of how light will bounce naturally.

The las thing: What method are you using for the light? Light cache is probably the best for interiors unless someone else has another opinion.

 

Anyway, this is too long to explain. Just look at the link below

 

http://www.spot3d.com/vray/help/150R1/tutorials_interior.htm

[ebad]

Dear Rotaru!

Care about somethings...Just image if in real world with such that window you have a bright interior!? I think you may have a large interior and small windows,Could you attache one render?

usually vray has no intensive problem with brightness(With a vraylight and nothing else)I think you've problem with scales!

[Thablanch]

The LWF is sure a thing that mixed up quite a lot of people, and it should not be the pros' choice, but most people choice.

 

This thread on the chaosgroup forum wraps it up quite nicely

http://www.chaosgroup.com/forum/phpBB2/viewtopic.php?t=15303

 

It really worth the time experimenting it by yourself after the reading for an hour or two, to get it clear in your mind haw it works, 'cause after, it will save you lots of time

[diegofer_9]

You are righ Thablanch. I read that thread when it began, and I did follow it but lost my patience with it at some point. I should definetly give it a second try.

[ccp76]

There is no one ideal way to light an interior in my opinion. It depends completely on the scene.

In my experience: If the openings that bring natural light inside the room are big enough, a sun and a very high environment are enough to ligh it nicely. I know LWF is the pro's choice but since I havent been able to understand it very well, I use Esponential color mapping for interiors, without going higher than 2.0 for DarkMultiplier so that render times dont go too high.

If the openings that bring natural light inside the room are too small, then I just add whatever artificial light is in the actual space, wether downlights or wall washers or whatever. Most of the times, even though is probably wrong, I get great results by adding an omni light with a very low multiplier and a Far attenuation to control it. It gives light wherever I need it, as long as I follow the logic of how light will bounce naturally.

The las thing: What method are you using for the light? Light cache is probably the best for interiors unless someone else has another opinion.

 

Anyway, this is too long to explain. Just look at the link below

 

http://www.spot3d.com/vray/help/150R1/tutorials_interior.htm

 

 

i was having the same problems, but with the help of this tutorial, im getting better results, thank so much man, you saved my life ! kudos to everyone, great comunity !

 

Cedric.

 

P.S: lol, just when i thought i was home free, how do i go about lights, i mean interiors with lights , whats the best way, im trying with spot lights, but they tend to bright up the whole scene, any help would be apreciated.

[Jason Matthews]

I would also check you materials. I have noticed a large increase or decrease in light by changing out materials or reflectance values.