Exponents for .nk data?
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Lord of the Rings Junkie
- Posts: 222
- Joined: Fri Feb 23, 2007 4:38 pm
Exponents for .nk data?
Could someone explain to me how to set the exponent in Blendigo to go with a corresponding .nk data file? I'm trying to get good chrome, but I don't know what exponent to use. Using the material preview seems to indicate that a setting of 7000 gives at least a semi-sharp reflection, but still not a mirror finish as you might see on a car bumper.
A mirror-like finish is a large value around 1 million. There was a good test chart someone did awhile ago I do not know if it is still around or not. It showed the various exponent settings applied to a ball.
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- afecelis
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link is still there:
http://deeppixel.uw.hu/projects/NK_materials.html
http://deeppixel.uw.hu/projects/NK_materials.html
AMD Ryzen 7 1800 @3.6ghz, 32GB ddr4 3200 mhz Ram, Nvidia RTX 3060 12GB, Win10, Blender/Sketchup/Modo/Cinema4d
Re: Exponents for .nk data?
Thank you so much for this, I've been looking for NK previews for a long time!!!

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- Borgleader
- Posts: 2149
- Joined: Mon Jun 16, 2008 10:48 am
Re: Exponents for .nk data?
If I had been able to run the script properly I would have redone the whole nk.data preview script. That page is so horribly slow.
benn hired a mercenary to kill my sig...
Re: Exponents for .nk data?
Yep, it's very slow indeed...
I actually replied to the August survey and that's one thing I asked Indigo's guys: would it be possible to have an official webpage preview of all the nk mats...

I actually replied to the August survey and that's one thing I asked Indigo's guys: would it be possible to have an official webpage preview of all the nk mats...
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Re: Exponents for .nk data?
I re-rendered all the NK previews a while ago with the official preview scene.
Unfortunately, nobody bothered to properly host the images after I handed them over.
(I no longer have any hosting of my own)
Unfortunately, nobody bothered to properly host the images after I handed them over.
(I no longer have any hosting of my own)
- Borgleader
- Posts: 2149
- Joined: Mon Jun 16, 2008 10:48 am
Re: Exponents for .nk data?
Do you still have a copy of these files? I could temporarily get them up on the netdougal2 wrote:I re-rendered all the NK previews a while ago with the official preview scene.
Unfortunately, nobody bothered to properly host the images after I handed them over.
(I no longer have any hosting of my own)
benn hired a mercenary to kill my sig...
Re: Exponents for .nk data?
I could see if I still have them, might take a while.
It's the word 'temporarily' in your post that makes me inclined not to bother... a few months down the line and we're in the same situation.
Perhaps Ben would be interested in putting up a page on the Indigo site with them on, in which case I will definitely see if I can find them.
It's the word 'temporarily' in your post that makes me inclined not to bother... a few months down the line and we're in the same situation.
Perhaps Ben would be interested in putting up a page on the Indigo site with them on, in which case I will definitely see if I can find them.
- Borgleader
- Posts: 2149
- Joined: Mon Jun 16, 2008 10:48 am
Re: Exponents for .nk data?
Yes well I was just going to put them up while Ben/Ono get their page up. But anyhow, I don't think such a page would be hard/long to create seeing as it's "only" displaying images, no sorting/... going on.dougal2 wrote:I could see if I still have them, might take a while.
It's the word 'temporarily' in your post that makes me inclined not to bother... a few months down the line and we're in the same situation.
Perhaps Ben would be interested in putting up a page on the Indigo site with them on, in which case I will definitely see if I can find them.
benn hired a mercenary to kill my sig...
- Borgleader
- Posts: 2149
- Joined: Mon Jun 16, 2008 10:48 am
Re: Exponents for .nk data?
Awesome!ZomB wrote:http://www.zom-b.de/indigo/nk/
benn hired a mercenary to kill my sig...


