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I've noticed that for any hair, bright colors such as white or silver blonde take 2X to 4X more time to render than black or dark colors.
Is this unavoidable?
I have not measured it in Iray..., nor in other render engines. (Normally, I use Arnold...)
Apart from the engine, you have to take into account the Physics. An object close to white does not absorb as much light as a dark one. The "biased" engines (3DLight,...) use tricks to imitate light reflections, unlike the "unbiased" engines, such as Iray, Arnold, Vray, etc... in which each ray of light is calculated between emission, rebounds on nearby surfaces, etc...
Few houses you will see painted black, since they absorb more heat / energy than a white one.So then, more rays keep bouncing from the hairs, and hence more calculations to compute?
By the way, why do you use Arnold? You use it in Daz? Instead of iray?
Few houses you will see painted black, since they absorb more heat / energy than a white one.
Where I live, black is becoming trendy and more new places use black or dark charcoal siding. I doubt it will age well (style wise) and I can see their value drop as they get older.
@ethiopia , It may not be the most appropriate example, since it depends on the area where it is built. In the south of Spain, they are all painted with white lime, because light frequencies and infrared (heat) bounce back. If you live in cold areas, darker is convenient, because you "heat" the house. If you are in mountainous area. the construction will be made of the closest wood, be it light or dark, etc..., just like if you live in the Sahara, with adobe with very thick walls and two minimal windows.
It´s knowing how to take (or flee...) the advantage the energy of the Sun on the site...@d0gg0d , Do the neighbors greet you? 😀
I've often thought it would be great to somehow store the excess heat of summer and use that to heat your house in winter, or vise verse. Take 10 degrees off summer and add that to winter to heat your house... even things out. I guess laws of thermodynamics aren't my big thing LOL.
@frank22 , Indeed, but thermodynamics does not influence render time.
The best one, Maxwell render, is "absolutely" true to nature, that's why it takes sooo time long.
Arnold is quite decent, not as severe as Maxwell, although Vray uses both techniques (biased & unbiased..), but there are many parameters to know...@d0gg0d , That house seems very interesting to me, as long as you have about 6 (or more...) million dollars. And, as it happens, NO ONE except the "idle rich" has that opportunity.
How nice to live among nature, surrounded by forests, and birds chirping at dawn!... NO, NO: You live in a city of cement and asphalt. (Most likely...). Those Architecture projects on the "site" cost a lot of money. It's like "the house of the waterfall" or "fallingwater" from Frank Llloyd Wright. The same hired workers abandoned their work for fear that "it" would fall under its weight. Excuse me, "Shit!": Frank knew what he was doing. In fact, despite some deterioration over time, it is upright and resistant.
And, sorry to insist: Now it is very fashionable to be a "Bio" or "Green" brand. I put that in my ass... The same multinationals that want to "wash their image", when they have been the main cause.
Well said.
There is a lot of supposedly 'green' mantras being promoted by the media which do not bear any unbiased balanced investigation.
Its been my experience that only people that are fairly well off and don't have multiple issues to worry about have the time to worry or care about the environment instead of the problems of daily life. Doesn't mean an underground house isn't interesting.
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