SSS Lampshade Tests

Kram1032 · Post by **Kram1032** » Mon Apr 02, 2007 10:13 pm

5000 k for daylight?
Normally, the sky colour is taken for this...
Although the sun has a very weak-yellowish white, things at daylight look more blueish - the sun lit sky colours them, so that you should use 7500K
(D75)

...or?

Post by **OnoSendai** » Mon Apr 02, 2007 10:15 pm

I think D65 is the standard for outdoors, skylit stuff

Kram1032 · Post by **Kram1032** » Mon Apr 02, 2007 10:18 pm

aha...
But not 5000K
hmmm: 6500K - Television, sRGB color space
7500K - ___ (colour next to it looks more like sky, to me...)
http://en.wikipedia.org/wiki/White_point

Marcofly · Post by **Marcofly** » Mon Apr 02, 2007 10:38 pm

interesting test!
don´t understand a couple of things.. maybe somebody could help me..
-what is MNCR?
-which kind of emitter are you using for this test?

thanks!!
Marcofly

Cire · Post by **Cire** » Tue Apr 03, 2007 11:13 am

MNCR: Maximum Number of Consecutive Rejections

As for what it means, someone else will have to explain that. I do know that lower values increase render speed, while higher values increase render accuracy.

Marcofly · Post by **Marcofly** » Wed Apr 04, 2007 12:18 am

Thanks Cire, it was a stupid question

Bye!!

Phoenix · Post by **Phoenix** » Wed Apr 04, 2007 5:35 am

Kram1032 wrote:aha...
But not 5000K
hmmm: 6500K - Television, sRGB color space
7500K - ___ (colour next to it looks more like sky, to me...)
http://en.wikipedia.org/wiki/White_point

Here are also good sources to answer these questions:
http://www.cambridgeincolour.com/tutori ... alance.htm
and http://www.nikondigital.org/articles/white_balance.htm

And the examples for different Lightsources from the second link (there is also a similar list on the first one):

1000k -- Candles, some flashlights
2000k -- Pre-sunrise
2500k -- Household bulb, used
3000k -- Household bulb, new / some studio lights
3000-4000k -- Sunrise / sunset (without the influence of heavy smog/smoke)
4000-5000k -- Fluorescent bulbs, cool white - "daylight" balances
5000-5500k -- Electronic Flash, portable (new bulb)
5500-6000k -- Studio Electronic Flash (new bulb)
6000-7000k -- Sunlight, bright day
7000-8000k -- "slight" overcast skies at lower elevations
8000-9000k -- Heavy overcast / slight shade
9000-11000k -- Rain at lower elevations / clear day at higher elevations (above 8000 feet)
11000-18000k -- Overcast to snowy days at higher elevations (above 8000 feet)

mrCarnivore · Post by **mrCarnivore** » Wed Apr 04, 2007 6:33 pm

Does that support my statement, that daylight films are set to 5000K?

StompinTom · Post by **StompinTom** » Wed Apr 04, 2007 8:42 pm

daylight film is balanced to 6500K as far as i know. tungsten film (indoor film) is somewhere around 3000K or so.

Kram1032 · Post by **Kram1032** » Wed Apr 04, 2007 9:36 pm

between 3000 and 5000, as it looks like

stay at "A" and 5000

SmartDen · Post by **SmartDen** » Fri Apr 06, 2007 2:43 am

Here is my lampshade test

Kram1032 · Post by **Kram1032** » Fri Apr 06, 2007 2:58 am

looks GREAT!
I like the window! Looks soooo great!

crc · Post by **crc** » Wed Apr 11, 2007 6:15 am

Hey Whaat-
those look really great!!!

about what opacity did you set those at, I know that you changed it for each shade, but maybe as a starting point to help some of us noobs.
thanks!!

Whaat · Post by **Whaat** » Wed Apr 11, 2007 6:46 am

If I remember correctly, I had the Sketchup opacity slider set at 75 for all of the shades. Only the RGB values were different for each one. The thickness of the shades is very important. I used 1/16".