new challenge about hdri lighting and reflections... - Page 2

Ernest Burden · June 17th, 2003

Well that sound simple enough.

Would you do me a favor and save out a copy of the HDRI image in TIFF format, so I can try it in a program that does not directly support HDRI--Lightscape? It can do image-based lighting in a Frankenstein sort of way. I had done a few tests with borrowed images in this thread I think the result was too difuse, not controlable. Soon I will be using C4D so I'll have to learn how to use HDRI properly.

STRAT · June 17th, 2003

Quote:

Originally posted by Ernest Burden:
Well that sound simple enough.

Would you do me a favor and save out a copy of the HDRI image in TIFF format, so I can try it in a program that does not directly support HDRI--Lightscape? It can do image-based lighting in a Frankenstein sort of way. I had done a few tests with borrowed images in this thread I think the result was too difuse, not controlable. Soon I will be using C4D so I'll have to learn how to use HDRI properly.

how about saving the HDR image in HDRShop as a floating point TIFF? that should retain the extra image info (if LS will accept it).

Getting C4D soon then eh m8? you testing the demo out?

Ernest Burden · June 17th, 2003

Quote:

Getting C4D soon then eh m8? you testing the demo out?

No. It obviously works.

I'm in no rush to leave Lightscape, but it cannot hold on forever. I will just have to figure out how to get good results from C4D, too. I may still do alot of the work in Lightscape and transfer it out to C4D one way or another.

seismograph · June 17th, 2003

ok, TIFF 16bit/channel is up.
I converted it in Photogenetics, so there is enough range.

btw, i wouldn't go with c4d but with lightwave.

seismograph · June 17th, 2003

Hi Ernest,

You get an BG image..so camera should be always the same.

Then we have a complete scene with that teacup and spheres to compair the images but you can take the scene and put everything on it you want... i hope that this will give you the posebility to work creative with the enviroment; i remember marcoss arnold renderings

*g* well i just have placed an older model of an job on it (click on it to coment it):

Clinton Ooi · June 17th, 2003

Sorry All, just wan to ask a very simple question... "What is HDR or HDRI mean?" I know it might sound like stupid question... I am just a beginner...

Thanks

STRAT · June 17th, 2003

a couple of things to read -

http://www.debevec.org/HDRShop/
http://www.trinisica.com/sub_learn_t...de=1&issue=002

STRAT · June 17th, 2003

Quote:

Originally posted by seismograph:
ok, TIFF 16bit/channel is up.
I converted it in Photogenetics, so there is enough range.

btw, i wouldn't go with c4d but with lightwave.

i know LW is probably the best radiosity engine in existance, but i certainly wouldn't diss c4d

rivoli · June 20th, 2003

here's my first try. there was no way to get any closer to your glass, and the white model doesn't cast a decent shadow.
the scene has been rendered whit brazil public version 04.53 in 4 mins.

[ June 21, 2003, 04:18 AM: Message edited by: rivoli ]

kiaran · June 20th, 2003

Oh man, this turned out to be much more difficult than I thought it would but I've learned alot in the process. This is my image so far:

Can anyone tell me why the backdrop photo looks so washed out? Its the 800x600 version. Anyway, I did this with Mental Ray and Maya. The hardest part (by far) is getting the hdr image to line up with the virtual scene. I assume you are all using a large sphere to hold the .hdr image, is that correct? If so how do you line it up so the reflections match? I've been using trial and error. Anyway, nice challenge and I think I'll try to add something a little more interesting if I get the time. Maybe an animation?

June 17th, 2003	#11 (permalink)
Ernest Burden Veteran Member Join Date: Apr 2002 Location: Ossining, NY USA Posts: 4,999 Name: Ernest Burden III	Well that sound simple enough. Would you do me a favor and save out a copy of the HDRI image in TIFF format, so I can try it in a program that does not directly support HDRI--Lightscape? It can do image-based lighting in a Frankenstein sort of way. I had done a few tests with borrowed images in this thread I think the result was too difuse, not controlable. Soon I will be using C4D so I'll have to learn how to use HDRI properly. __________________ Ernest Burden III AcmeDigital architectural rendering

June 17th, 2003	#14 (permalink)
seismograph Senior Member Join Date: Aug 2002 Location: vienna Posts: 188 Name: Christian Bauer	ok, TIFF 16bit/channel is up. I converted it in Photogenetics, so there is enough range. btw, i wouldn't go with c4d but with lightwave. __________________ [see.]

June 17th, 2003	#15 (permalink)
seismograph Senior Member Join Date: Aug 2002 Location: vienna Posts: 188 Name: Christian Bauer	Hi Ernest, You get an BG image..so camera should be always the same. Then we have a complete scene with that teacup and spheres to compair the images but you can take the scene and put everything on it you want... i hope that this will give you the posebility to work creative with the enviroment; i remember marcoss arnold renderings g well i just have placed an older model of an job on it (click on it to coment it): __________________ [see.]

June 17th, 2003	#17 (permalink)
STRAT Super Moderator Join Date: Dec 2001 Location: Cardiff, Wales, UK. Age: 36 Posts: 6,486 Name: Stephen Leworthy	a couple of things to read - http://www.debevec.org/HDRShop/ http://www.trinisica.com/sub_learn_t...de=1&issue=002 __________________

June 20th, 2003	#20 (permalink)
kiaran Junior Member Join Date: Jun 2003 Location: Alberta, Canada Posts: 11 Name: Kiaran Ritchie	Oh man, this turned out to be much more difficult than I thought it would but I've learned alot in the process. This is my image so far: Can anyone tell me why the backdrop photo looks so washed out? Its the 800x600 version. Anyway, I did this with Mental Ray and Maya. The hardest part (by far) is getting the hdr image to line up with the virtual scene. I assume you are all using a large sphere to hold the .hdr image, is that correct? If so how do you line it up so the reflections match? I've been using trial and error. Anyway, nice challenge and I think I'll try to add something a little more interesting if I get the time. Maybe an animation? __________________ 'It needs more chrome! Or maybe just a lens flare...'

June 17th, 2003	#16 (permalink)
Clinton Ooi Junior Member Join Date: May 2003 Location: Malaysia Age: 33 Posts: 8 Name: Clinton Ooi	Sorry All, just wan to ask a very simple question... "What is HDR or HDRI mean?" I know it might sound like stupid question... I am just a beginner... Thanks

June 20th, 2003	#19 (permalink)
rivoli Senior Member Join Date: May 2003 Location: milano Posts: 291 Name: massimiliano buvoli	here's my first try. there was no way to get any closer to your glass, and the white model doesn't cast a decent shadow. the scene has been rendered whit brazil public version 04.53 in 4 mins. [ June 21, 2003, 04:18 AM: Message edited by: rivoli ]

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