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Messages - borisquezadaa

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601
Work in Progress/Tests / Re: Night shot
« on: 2014-03-10, 22:06:37 »
A little update adding the moon in post. I'm quite pleased with the results.
Starting to like Corona a lot.

602
Work in Progress/Tests / Re: Night shot
« on: 2014-03-10, 02:48:54 »
All rigth... start from scratch.

The moon ligth isnt blueish as i tough  has a temprature of 4100-4150 a rather yelowish tone. And thanks to this http://en.wikipedia.org/wiki/Purkinje_effect we perceive as blueish. So i put the Corona sun as 4150 Kelvin Temp.

Respect to relative brightness to dayligth, using this info http://en.wikipedia.org/wiki/Daylight i use 1/1000 as Intensity on the sun.

I-m lost respect the size of the moon respect of the size of Corona Sky but as i intend to apply photoshop on the disc i leave as 5 for now.

I never knew that where a setting like bitmap paging in max and by default where active. If you wish to wait for your renders forever leave this on. See this as reference http://jokermartini.com/2013/11/14/render-speed-increase/.Thanks to suggest that.

Using a default Corona material override, in post settings in corona use 4150 as white balance as the predominant ligth source was the moon. Giving me a yelowish tone. But just as stated before our eyes shift that illumination to blue so i try a value of 3150 to return to that blueish color.

For the lamps i put corona sphere 3000 Kelvin  for simulating tungsten ligth. This link explains a little about moonligth photography http://www.cast-lighting.com/search/1/display-document/71

I try an spherical star map as suggested in the forum but it turns out that the stars renders too big and unnatural.
This is the link for that realistic position and brigthness star field http://paulbourke.net/miscellaneous/starfield/

Resume>
IMAGE 4150ML-4150WB   4150 kelvin sun, 4150K White balance in postprocessing tab
IMAGE 4150ML-3150WB   4150 kelvin sun, 3150K White balance in postprocessing tab to mimic blueish tint from human eye
IMAGE 4150ML-3150WB/3000TL   4150 kelvin sun, 3150K White balance in postprocessing tab, corona ligth 3000 K Tungsten ligth , corona ligth sphere
IMAGE STARFIELD just a render whit spherical star map from http://paulbourke.net/miscellaneous/starfield/

Thats it for now...

603
Work in Progress/Tests / Re: Night shot
« on: 2014-03-09, 23:58:23 »
The same using dayligth system from max whit coronsun, no skyligth.
I set the sun time by 23:00 pm and i get this kind of sunset mood.

Guys in the forum told me that i could turn corona sky in to a moon with litle effort... lets see what can i came up to.

604
Resolved feature requests / Re: CoronaMoon
« on: 2014-03-09, 23:56:16 »
Maravilloso.

Thanks for the link.
Ah.... i'ts always been done before... let's put that maps for a good use.



605
Resolved feature requests / CoronaMoon
« on: 2014-03-09, 22:11:32 »
Just an idea...  to CoronaSun.

And environment map that mimics a night sky with stars and moon.
Actually one could select a place on globe and a date and generate some kind of exr texture to put in the environmental slot.
For shure there is plenty of places on the net where one could pick information for that.
Off course a slider to set the amount of stars and moon size. I've seen that maps on cell apps.

It would be a totally awesome add for Corona.

... or just add a greater than 90 degree slider to the corona sun model to mimic nigth sky.

Just my 2 pesos cuates...

606
Work in Progress/Tests / Re: Night shot
« on: 2014-03-09, 21:55:11 »
You were right... deleted the sky dome mesh and put the hdri in the environment slot. Much better, however not quite there yet.

I'm gonna try the sun model from corona. Also replace the mesh emitters  for sphere lights.
It is possible for sun model from corona can mimic night? (If i put an adecuate angle greater than 90 degree?). Could be a good addition.


607
Work in Progress/Tests / Night shot
« on: 2014-03-08, 20:44:05 »
I havent seen any night shots in the gallery so i converted one industrial scene i have using the scripts in the forum from Vray.

Pretty much out of the box settings on corona, one hdri in environmental slot and a couple of mesh emitters on the lamps.
19 hours so far.
The hdri shows as some small brigth dots on the back. Some kind of bug?. I lower the hdri to 0.01 (from 1 as default) to mimic night illumination from sky.

Any suggestions would be very appreciated.

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