car studio lighting - taking Luxrender for a test drive :)

Post your tests, experiments and unfinished renderings here.

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Re: taking Luxrender for a test drive :)

Postby animelix » Sat Jul 12, 2008 4:48 pm

in the attachment you can see where the image is applied to, infinite environment lightens the scene diffuse from all sides.

it is just a test how it looks with a jpg, using a hdri/exr could look better. Some planes to shadow some parts of the scene would be good too.
maybe in future lux can handle textured emitters?
Attachments
MB infinite.jpg
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Re: taking Luxrender for a test drive :)

Postby dyf » Sun Jul 13, 2008 9:26 am

Guys,

i feel excited to have control over my lights again.. thanks a lot :mrgreen:

here is a test for the lighting:
Image

and this is with extra work on the materials:
Image

here is how i did the second one.. one large area light (little bigger than the size of the car), and a reflector the same size with the mirror material. i reduced the color of the reflector from white to 30-40% black.

Image

and the whole thing is in a big studio with a dark gray matte material..

Image

i do a distributed rendering between ubuntu on amd 64 X2 and a macbook (intel core 2 duo).. this is after 2:10 hours (200 S/px).. I used the render preset "Final - low vMLT/Path Tracing (RECOMMENDED)"..

What i'm having trouble with now is the glass material on the windows and head light covers. i set IOR manually to 1.52, reflection is gray (R, G, B values to 0.4351), transmission white.. any idea how to make it look less grainy? it also appears to have some artifacts..
And, any suggestions on different rendering settings?

i'll do more tests with different lighting setups next.. thanks for your support again everyone :)
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Re: taking Luxrender for a test drive :)

Postby Dade » Sun Jul 13, 2008 11:03 am

dyf wrote:Image


Pimp my ride !!! I love the blue neon lights under the car :mrgreen:

However the background of image looks a bit to dark in my opinion :idea:
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Re: taking Luxrender for a test drive :)

Postby dyf » Sun Jul 13, 2008 11:25 am

Dade wrote:Pimp my ride !!! I love the blue neon lights under the car :mrgreen:


hehe.. wait until you see what i'll do next :mrgreen:
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Re: taking Luxrender for a test drive :)

Postby ckbrd » Sun Jul 13, 2008 12:15 pm

dyf

what you need is more contrast in your renderings.

GI is good for a even or natural base illumination
but you need accent lights to create highlights and
shadows and thus creating contrast and through this
emphasizing parts of your car.

Besides the typical light stuff recently more and more
artistic representations of car paints became quite
popular.

The highlights look like long anisoropic reflections.

I collected a lot of images for my students to look at
and learn from those by observing and analyzing what
makes those images good or bad.

look here:
http://picasaweb.google.com/www.ckbrd.de

those might be a nice source of inspiration.

Google is a great tool to research visual material today.

This is to even - no contrast, no focus, no drama
Image

This makes good use of negative space but mainly focuses on the side outline of the car
Image


Same use of negative space but the highlights add nice value to the image and you can read the dimension of the
car much better
Image


with a slightly brighter background in side view you start seeing more of the car itself and focus less on the outline
Image
but dont make the background too bright when you want to have some punch too it.

the colors are also important. seeing less of a car but having good focus on some parts makes it look sharp, and attractive to dynamic people.
the lexus color mood is more talking to older classical people - thus think about who you want to address.

here for example the car is too dark for the bright background and hard to read - thus watch contrast.
Image

same here
Image

this one looks eye candy but not dramatic, the highlight reflection is not enough to make the object look more dimensional
Image

natural colors are important to make it look less sterile and indoor/studio shot
Image

reflective bottom and fill lights as well as a designed background will make the car read nice and the background more interesting
Image

Here are images going that direction of anisotropic - stretched highlights. the images are not good. I do not find those once I saw some time ago
Image
Image

feel free to check my picasa albums for more images.

http://picasaweb.google.com/www.ckbrd.de

Claas
Last edited by ckbrd on Sun Jul 13, 2008 2:48 pm, edited 3 times in total.
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Re: taking Luxrender for a test drive :)

Postby dyf » Sun Jul 13, 2008 2:16 pm

ckbrd

your post seems to have great information, just what i needed actually. but the direct links to the pictures don't work (most of them at least) :( .. can you fix the links, please please please!!! :P

the competition is about studio lighting, so we're not allowed to create objects around the car; i'm not sure if accent lights are allowed too, i'll have to ask, but yes, good idea.
in the competition they posted a new topic with information and links on studio lighting. this website is particularly useful. it suggests some set ups:
http://www.bacht.net/english/referenzen ... o_hbw.html

most other links are v-ray tutorials as many people are using v-ray, i'm the only one with luxrender actually.. so i have to come up with good results :P

i'm browsing your albums, but it would be a lot better to see your comments on the ones you linked there.

thanks again ;)
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Re: taking Luxrender for a test drive :)

Postby ckbrd » Sun Jul 13, 2008 2:25 pm

woah

amazing link dyf !!!

the studio shots are great to have - and actually look at.

Look what you can do in Lux is simply modeling your own digital studio the same way
they would set-up a studio in real life.

it is that simple !

because of the way how lux renders colors, color bleeding, shadows, etc will all come
very close to those real world scenes. you just need to set them up / model them the
same way.

EDIT: Images links are solved - some were corrupt.

claas
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Re: taking Luxrender for a test drive :)

Postby ckbrd » Sun Jul 13, 2008 2:52 pm

or make something totally cool like BMW with their new soft skin car concept:

Image
Image
Image
Image
Image


also pay attention to how the background design reflects the movement of the soft skin.

fricken awesome design ;)

http://www.youtube.com/watch?v=kTYiEkQYhWY
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Re: taking Luxrender for a test drive :)

Postby ckbrd » Sun Jul 13, 2008 3:07 pm

ok

i dont get what is wrong with the forum here or picasa.

Devs, any clue? why does it say image now instead of showing the image?
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Re: taking Luxrender for a test drive :)

Postby Abel » Sun Jul 13, 2008 3:36 pm

ckbrd wrote:i dont get what is wrong with the forum here or picasa.


Picasa seems to prevent linking directly to any images hosted there - I found out by checking their discussion forum, for example http://groups.google.com/group/PicasaWe ... fc944a7230.
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