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"Radiosity & Caustics" . . . Sort Of A Challenge . . .

ZBrush Artworks
#1

‘Afternoon all . . . :slight_smile:

I haven’t posted in a while, due to the fact that I’ve been very busy lately with work & other things. One of the other things is Beta Testing different graphics software. OK, now I’ve got my apology out of the way. :smiley:

I remember a week or two ago, there was a topic on the forum regarding “Radiosity & Caustics”. I was playing around with one of my 3D rendering software programs, ( although I won’t mention the name ), & I came up with this image, ( below ). I thought it looked like an interesting image, so I thought I’d post it. What I would like to ask one, or more, of you masterful Zbrush artists’ out there, ( & there are very many of you ), is to try to come as close as possible, to duplicating this image in Zbrush. I’m sure that out of over 1000 members on the forum now, someone has mastered Zbrush well enough to be able to create an image somewhere close to the image posted? How about it, someone want to give it a try??? :rolleyes:

I’ll check back a little later to see all the posts, ( with images ). :wink:

You all have a good one & I’ll talk to’ya later . . . :cool: Mark.

PS: ( It’s really satisfying to see all of the posts, day after day. It makes a person really want to buy Zbrush, if he or she doesn’t own it already. And if they do, then all the posts from the satisfied & successful users, makes other users want to become more proficient as well. ) :wink:

[img]http://www2.zbrushcentral.com/zbc_uploads/user_image-1002678479flf.jpg[/img]
#2

Wow Kruzr, You are a very demanding taskmaster. One of the hardest parts about doing this is trying to remember what the details were that I was trying to duplicate, so I took some liberties. It’s obviously not as good as yours, but I was very pleased with the reflection on the ceiling facet above. The image that you posted here is spectacular, and I hope that you show us more of this kind of stuff. :cool:

#3

You guys have 2 great images here–It’s easy to like them equally for different reasons–damn fine pictures-my monitor is dancin’ --congratulations --Both of you!!

#4

hi Mark. glad you’re back!

here’s my render. pretty basic modelling, as I didnt have much time to spare… however, it is purely rendered and modelled. no 2Dbrushes anywhere (it would have been much easier that way).

By the way, cute little picture. I hope you don’t mind my doing my own rendition of it :slight_smile:

hope you approve.

<BLOCKQUOTE>quote:</font><HR> a thinking artist is no surprise <HR></BLOCKQUOTE>

my renderosity gallery

…and I had a good one!

#5

'Evening Zoid, Robo & Chris . . . :slight_smile:

Geeezzzz, I’m a little surprised. :confused: I thought for sure that there would be more forum members willing to take a try at this image? Oh well, I guess I’ll have to put you two guys at the top of the list of over 1000 members, who were confident enough, or interested enough to give it a shot. :wink:

I think that both of you did a great job on each of your images, being that it’s fairly hard to try to recreate another image, without all the tools in front of you. :smiley:

I thank both of you for your image postings & you guys have a good one . . . :cool: Mark.

PS: ( Hey Robo . . . I didn’t forget you my friend, Heheheh. How’s everything going for you lately, fine I hope??? :wink: )

#6

I’m working on one now. My computer has down and I had to re-install ZBrush. I’ll post it hopefully tonight.

#7

Winged One - I’m looking forward to seeing your posting. I remember your “radiosity” Post from a while ago and it was very informative. No need to rush this one like I did.

Chris - You did way much better than me. I am interested in knowing what materials and settings you used to get your effect.

Kruzr - Surely one of the best ways to learn something is to try and recreate a superb example of something. A challenge like this is another great way to explore this program, and 3D art in general. I would love to see your ZBrush version of this scene or at least part of it,if you have the time. Thanks :slight_smile:

#8

Where are the tuts to make this?
:qu: :qu: :qu:

#9

zoid, thanx, it’s not better, if you consider that I didn’t get the reflections right… :slight_smile:

ok. I used gelshader with scene reflection and almost 70% transparency.

for the lightbulbs I used orange-coloured sphere3Ds, with a glow material set to highest.

the walls is where I had to improvise.
I used the coloriser material, to blend some colours together until I got the light blue. actually, I had light blue as the coloriser base colour, and then added some diffuse grayness. I also added noise, a little colour bump, and lots of scene reflection.

the interesting thing I found while trying to achieve proper reflections -and it’s one of the things I learnt quite by accident during this exercise- is;

I played a bit with field of view (in the environment tab). it worked wonders as you can see. it made the reflection of the scene narrower or wider.

that’s all, I believe. I’ll gladly add anything if you ask me :slight_smile:

<BLOCKQUOTE>quote:</font><HR> a thinking artist is no surprise <HR></BLOCKQUOTE>

my renderosity gallery

#10

Oh I’m looking around in very strange rooms
where am I ? I know I like to look around
in these rooms … I sit down and relax
in this atmosphere :wink:

#11

Here’s my room. I took a few creative liberties with it though. I’ll try one more faithful to the original a little later though. Plus, I’ll have to remember that the room is rectangular rather than cubical. Oh well.

#12

'Afternoon all . . . :slight_smile:

Hey WingedOne, “I took a few creative liberties with it though”, I’m glad you did I like the different creative alterations in you image, great job. :wink:

Hi Zoid, “I would love to see your ZBrush version of this scene”, I guess I may as well be honest with you. This IS my ZBrush version of the scene . . . Heheheh. :smiley: Everything in the image is totally ZBrush, no imports of any kind, objects - textures - alphas, are all within ZBrush itself. :wink:

I did use something that I don’t know if very many users are familiar with or not. In the “Light” panel, there are two icons, “GDI = Global Diffuse Light Intensity” & “GSI = Global Specular Light Intensity”. They are very similar to a “Light Gel” in other 3D rendering software. You should play around with them, as they can give a totally different look to you scene. You can adjust the settings for strength, & you can use a Texture from the Textures list, it can be a color image or a grey scale image. Below are two images, the 2nd one with “GDI & GSI” applied with the “Spectrum” texture & the 1st one without. As you can see it really can make a visual difference. :rolleyes:

Hi Vincent V. Gogh . . . I have to apologize for not having a tutorial to go along with the image. I’ve been pretty busy lately & haven’t had a lot of time. :frowning:

If any of you have any questions about any part of the image, please ask & I’ll try to answer your questions. Y’all have a good one . . . :cool: Mark.

#13

godsdammit, Mark, I KNEW IT.
no other 3D proggie would produce the reflection that I noticed on the pink sphere!

grrr. you should have said… I feel like a complete failure :slight_smile: probably because I am, of course. hope I came close enough

oh yeah; how did you do the side walls reflect correctly? I didn’t play with it much, but it doesnt seem easy.

<BLOCKQUOTE>quote:</font><HR> a thinking artist is no surprise <HR></BLOCKQUOTE>

my renderosity gallery

#14

Hi Chris . . . :slight_smile:

On my room object, (side walls), I used the “Basic Material 2”, with .25=noise - 75=noise raduis - 2=color bump - 25=env.reflection. I did play with the Noise Curve, to get a smoother bump effect. As far as the reflections on the walls, I believe a lot of credit goes to the, “Render / Modifiers / Environment” section. I’ve included an image ( below ) of my settings for this feature. One more thing, the more you increase the “Repeat” setting, the more obvious the reflections are. :smiley:

That’s about it Chris, nothing great, just a few minor adjustments here & there. I hope this helps some & you have a good one my friend . . . :cool: Mark.

#15

that seemed to do it :slight_smile:
cool challenge, mark. keep 'em coming :slight_smile:

<BLOCKQUOTE>quote:</font><HR> a thinking artist is no surprise <HR></BLOCKQUOTE>

my renderosity gallery

#16

Thanks for the info Kruzr. I haven’t played around with those light features too much. I’ll have to try to do some experiments with it now.

I’m not sure of what the differences between GSI or GDI are yet. I’m just guessing that GSI would have something to do with the specular highlights?

#17

Hi WingedOne . . . The “GDM & GDI” is for controling the “Global Diffusing Of Light” on all of your objects in a scene. The “GSM & GSI” is for controlling the “Global Specular Of Light” on all of your objects in a scene. :smiley:

Hope this helps some more & have a good one . . . :cool: Mark.

#18

Boy do I feel like a sucker! I really fell for this one. ( Actually I knew it was a trick all along. I was just playing along with it to enhance the drama. Yea, right) What a fun way to get tricked though. Chris, I tried out your material settings and they worked very well, thanks.
Kruzr, those new lighting modifiers are also a good way to free up lights to allow you to use more of them in a scene, if I understand it correctly. This trick with the environment>scene setting is now my most favorite thing to do thanks to you. Here is a Widget portrait of you, “Kruzr the Joker” in action :smiley:

#19

Thanks for the information about the lights Kruzr. I have seen the controls there but haven’t played with them yet. The picture you did demonstrating the effect looks really interesting.
Every time I think to myself “wow, look at all I’ve learned so far” I see so much more to play with :slight_smile: Thank you and everyone else for all your helpful information.

#20

You certainly suckered me with that one. I was thinking you’d done it in Vue, since I know you’ve been playing around with that.

Your approach was so much simpler than what I was going to try, too.