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Subject: Visible light gurus (and you know who you are)


Nukeboy ( ) posted Sat, 08 November 2003 at 4:08 PM · edited Sat, 27 July 2024 at 7:10 AM

file_83268.jpg

I saw this image by photographer Allan Bruce Zee of the church of St. Amand de Coly. I thought the use of light was incredible and definitely wanted to duplicate it (the light, not necessarily the scene) So I tried to duplicate it. I feel I have the scene, but I just cannot get the light. (Hopefully I will not be prosecuted for printing this, but here is his, and here is mine....(mine on the right, like I needed to tell you)


shadowdragonlord ( ) posted Sat, 08 November 2003 at 5:23 PM

Aye, nice rework of the scene, the POV is a bit off but it's very close! There are a few methods, I'll give you one and let the other light-freaks slay down the rest of them... Turn off the sunlight, in the Skylab. Place a sphere in your scene, set to hidden, and name it "Light Target", or whatever... This is your "null". Place a spotlight outside the top window, and click the "A" for attributes. On the top, click the middle tab "Linking" (I believe?)... Then click "Track Object Name", about halfway down. Select your "Light Target", and the spotlight will be pointed towards your null. Next, open the Light Lab for your spotlight. Set "Visible Object" to Volume Visible. Click "Okay" (the checkmark) to apply this setting. Render it. It won't look right, but you'll notice perhaps the shadows are laying close to what you wanted. Open the Light Lab again, and mess with the light's intensity and falloff... Now, the light might NOT be visible still. In the Light Lab click "Procedural" for the gel. In this case, you need to switch the Material from "Light" to "Basic", or maybe no volumetric shading... A bit of tweaking and you will SEE light. I'll make some screenshots for you when I get home, if this text isn't helping... Just one way.... (waits for Incarnadine to point out my inaccuracies!)


ocddoug ( ) posted Sat, 08 November 2003 at 5:49 PM

Cool scene so far :-) Like Shadow said, disable the sun. Then place a spotlight wherever you want it - I'd say just outside the window so it's facing inside the church. If you're using Bryce5, here's the settings on the spotlight in the Light Lab: Edge Softness: 100% Cast Shadows: Normally I use 100% on both Shadow Ambience and Soft Shadows. The shadow color set to black. This increases your render times though. It's good not to use this option while you're positioning your spotlight, since you will do a lot of waiting for the preview window to catch up LOL... Render Options: Select Visible Object and Volume. You can select Infinite Light too. Those are the basic settings. You can also use Volume World if you've got patience. BTW, I have a few screenshots of various lighting techniques on my site, including this one: http://www.geocities.com/bookjunkkee68/LightingCup.html Good luck! Doug


madmax_br5 ( ) posted Sat, 08 November 2003 at 6:19 PM

One spotlight somewhat far way with an intensity of 260 is doing the trick for me. I did a quick scene mock up and i'll post the render results in a few.


Incarnadine ( ) posted Sun, 09 November 2003 at 1:00 PM

LOL at SDL. Good idea on the target though! Thanks. For the rest, I would suggest a large distant (to minimize the radial effects of the light's point source) circular parallel with dege softness of approx 20%, volume visible, infinite light, go into the mat editor and set the quality slider at approx 63%. I would also use a slightly yellow/orange colour for the light. Sunlight off for sure. Place a picture object of a sky outside the window and use a second parallel to illuminate that. Set the picture obj to not cast/no self shadows though in the mat lab! I would also use a couple of low level spherical lights for ambience/fill (about mid mid way up scene) and perhaps wide shallow up aimed conics some radiosity effects (locate just above floor where sun hits. In the light lab try darkening the ambience colour and use shadows between 60 to 70%. This is how I would tackle this.

Pass no temptation lightly by, for one never knows when it may pass again!


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