PDA

View Full Version : finding IES lights for lightwave?



plankton
02-02-2009, 05:24 AM
Hey guys,

just been searching everywhere on the internet for ies lights/ plugins for lightwave? can someone please point me in the right direction?

thanks.

wjo53
02-02-2009, 05:37 AM
Here's a place to start...

http://www.iesna.org/manufacturers/manuf_search_form.cfm

Mitja
02-02-2009, 05:40 AM
If you have LW 9.6 you won't need any ies plugins, since it has native ies lights.
Otherwise you could fake them with the ies node by dennis pontonnier. But since it's a node you can use it only with lw 9.x, which means you have 9.6 too, so you don't need it.
If you want ies files, there are so many on the net, just google ies files or similar.
Here's a link for some reference : http://www.lalighting.com/ies.html

wjo53
02-02-2009, 06:08 AM
...or...create your own...

http://www.tom-schuelke.com/ies-gen3.exe

JeffrySG
02-02-2009, 07:28 AM
Here's a place to start...

http://www.iesna.org/manufacturers/manuf_search_form.cfm

Very cool search function! Thanks for the link!

jrandom
12-16-2009, 05:15 PM
Is there an IES light generator/editor for Mac? I've been having a heck of a time finding one.

JeffrySG
12-16-2009, 05:21 PM
Is there an IES light generator/editor for Mac? I've been having a heck of a time finding one.

Just out of curiosity, why did you need a IES generator with so many IES files available for almost every light source?

ramccombe
12-16-2009, 05:53 PM
This is a handy app for viewing IES files. Windows and Mac.

http://www.3dop.com/

ramccombe
12-16-2009, 06:00 PM
http://www.alllighting.com/new/photometrics.html

ramccombe
12-16-2009, 06:21 PM
http://www.lithonia.com/Photometrics.aspx

jrandom
12-16-2009, 06:22 PM
Just out of curiosity, why did you need a IES generator with so many IES files available for almost every light source?

I'd like the ability to craft my own custom lights. (One example is a space scene I'd like to create once I'm more familiar with lightwave that involves accurately representing the light influence of the sun at 4.4 billion miles distant as well as all of the brighter stars.)

Having a light's brightness go from "dark" to "white" is fine when starting out, but I'd eventually like something a little more physically realistic. :)

rsfd
12-17-2009, 05:15 AM
Can't imagine that ies data of stars could be generated.
It just doesn't fit into the .ies measuring standard.

(You can open .ies files in any Text Editor [TextEdit, BareBones TextWrangler or BBEdit], it's just a measuring protocol of a light's luminance and distribution values)

http://www.lithonia.com/Library/IESFiles/Default.asp?Path=/Lithonia_Lighting
http://www.lalighting.com/ies.html
http://www.americanelectriclighting.com/Library/Photometry/default.asp?Path=/American_Electric_Lighting
http://www.sternerlighting.com/resources/photometry/
http://www.fclighting.com/ltgdata.htm
http://www.eclipselightinginc.com/pages/download/photometric-ies-files.php
http://www.trilux.de/tx/opencms/sites/trilux/de/Service/Software/index.html
http://www.hydrel.com/products/Family.asp?ProductType=&Category=&Family=7100&View=IESFiles
http://www.nam.lighting.philips.com/us/ecatalog/photometric.php?mode=1
http://www.erco.com/en_index.htm?http://www.erco.com/~klickmeister/km_ls_download/ls_download.pl?_startseite=en=10_catalogues/20_new_products

jrandom
12-17-2009, 10:32 AM
Can't imagine that ies data of stars could be generated.
It just doesn't fit into the .ies measuring standard.

(You can open .ies files in any Text Editor [TextEdit, BareBones TextWrangler or BBEdit], it's just a measuring protocol of a light's luminance and distribution values)

Thank you! I've not mucked around with IES lights before so I'm not yet acquainted with their limitations. I know that 3DSMax has an IES Sun light... I should find a copy of that IES file and study it.

rsfd
12-17-2009, 03:41 PM
Thank you! I've not mucked around with IES lights before so I'm not yet acquainted with their limitations. I know that 3DSMax has an IES Sun light... I should find a copy of that IES file and study it.

You're welcome. Don't know the IES Sun of 3ds (no Mac version around ;) ), would be interesting to see that .ies.
http://www.cgarena.com/freestuff/tutorials/max/ieslights/
But I would assume that this is the 3ds implementation of a physical sun and sky model, which is in nearly every 3d package that allows Global Illumination.
(You can also re-create real lamps / light emitters by the use of an HDR image of a light source projected through a spot light (or just by painting gradients or similar in a HDR software) - wouldn't be physically correct, but can give very nice lightings compared to the standard lights)

djlithium
12-19-2009, 02:39 AM
I spent a few weeks a couple of years ago collecting IES lights for LW. I have about 20,000 of them or so in my collection now. I may publish them somewhere, probably www.battlestarvfx.com for people to check out.

jrandom
12-19-2009, 10:44 AM
Interesting... IES lights have hard shadows and don't do caustics. Does anyone know the technical reason for this?

rsfd
12-20-2009, 08:36 AM
Interesting... IES lights have hard shadows...
shadows are working fine, maybe check your render settings.

and don't do caustics.
yes, caustics are disabled

Does anyone know the technical reason for this?
not me, I would guess that's a question for NewTek Dev Team. ;)

also "light view" points in a wrong direction with ies. lights.
But the general implementation of those lights into LW is excellent compared to other 3d packages.