Prisms...

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Lakys
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Post by Lakys » Wed Apr 02, 2008 6:16 pm

The basis of 3D computer graphics is to reproduce reality or to produce art. Producing reality can only be done by doing some rough approximations or faking some elements, just because making a real model of reality would require thousands or billions times more calculations.
Although, thanks to the high power of computers, it is affordable to do raytracing compared to twenty years ago. Features like radiosity, global illumination, photon mapping tend to make renders almost photo-realistic (providing it is used well).

Now making a spectrum dispersion from a prism is one thing, but you could have made other nice effects such a magnifier and the sun producing caustics. It is based on optics and it works pretty well with Carrara.

Software strength and weakness do not really matter much. What counts most is the determination and the talent of people to achieve their goal.

I saw some talented artists make amazing things with basic features, or cheap softwares. Even if it is the same software that I own, I would not even imagine I could have produced the same.

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Shine

Post by VitalBodies » Wed Apr 02, 2008 8:00 pm

I hear what you are saying and I agree. Yet at the same time using the right tool for the right job can make such a difference. And using the wrong tool can prolong the job out and make it harder than is needed.

For example I could mine, melt and grind and polish my glass and create a prism and a lens for the laser I am building to make a test laser so I know how to accurately fake the effect in 3D or just use the right 3D tool.

Of course I would also have to hand build ALL the tools to mine, melt and grind and polish my glass and create a prism and a lens for the laser I am building to make a test laser so I know how to accurately fake the effect in 3D.

Do you want to help build a laser and grind some glass? Oh wait we have build a shovel and digging tools first...

Sometimes one can create nice art using the right tool for the job at hand.
We are using these tools and they have areas where they really shine.
Where they shine is my first question.

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Post by Lakys » Thu Apr 03, 2008 3:30 pm

The funny thing if you make a laser is that you won't get a spectrum and dispersion with your prism. :lol:

The specificity of lasers is their unique lengthwave. To get some visible dispersion, you need a light spectrum such white light.
:wink:

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I told you we should have used 3d instead of a laser

Post by VitalBodies » Thu Apr 03, 2008 4:50 pm

Apparently I made a real laser out of a spot light. Luckily I did NOT burn a hole through my monitor or injure Victoria!
Last edited by VitalBodies on Fri Apr 04, 2008 6:01 am, edited 1 time in total.

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Post by cowdog » Thu Apr 03, 2008 5:40 pm

Nice discussion.

I don't have anything of substance to add here, since I'm just getting into Carrara myself.

But I'm going to make a general comment... I imagine that an application, like Carrara, takes an investment in time to be able to realize its full potential. Once you've made that time investment, you're more likely to stick with that application only because using (and becoming expert) in a similar application involves more learning and requires one to explore uncharted territory.

So, at least in the short term, it might just be better to fake what you can't natively produce. And that's probably the direction I would take.

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Skin refracts light like glistening snow in the sun...

Post by VitalBodies » Thu Apr 03, 2008 6:37 pm

Nice discussion.

I don't have anything of substance to add here, since I'm just getting into Carrara myself.

But I'm going to make a general comment... I imagine that an application, like Carrara, takes an investment in time to be able to realize its full potential. Once you've made that time investment, you're more likely to stick with that application only because using (and becoming expert) in a similar application involves more learning and requires one to explore uncharted territory.

So, at least in the short term, it might just be better to fake what you can't natively produce. And that's probably the direction I would take.
I think knowing the the strengths and weaknesses of the program is part of becoming an expert. In my case I do not need to fake the prism effect with the prism. The point was an exercise to see if C6 could split light. I was actually doing this for a skin test to learn how to get more realistic skin. I also wanted to see if I was rendering at the highest level the program can do. Plus if you use the program as your tool to accurately paint what you know should be there, you have to know when the program can actually do that and when the program drops off and can't. I am still learning the boundaries of that. Example: Skin refracts light like glistening snow in the sun creating countless tiny rainbows in certain lighting conditions. Rather than attempt that with skin, I thought to use a prism and a laser which would in theory would be much easier to control.

It's lucky I didn't burn the house down and no one got hurt! :lol:

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