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Ceciliabr
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Autumn colours



A new morning.




Every morning, Lillith runs to the mirror, to see if her reflection is still there.



She likes the autumn. She likes the colours – but she doesen't really like mornings.



She spends her days waiting – often in front of the window.



Watching the leaves fall, and the rain. The puddles become like mirrors.



Water makes the colours brighter when the sun comes back.
-Watch out, cat! There are eagles here!




Soon it will be dark. Autumn is good.




The best thing about autumn is that the days get shorter, so the nights get longer.




It's time to turn the mirror … her dad will get up soon.





Cec
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[Edit 1 times, last edit by Ceciliabr at Oct 30, 2016 4:06:33 PM]
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bdfd
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Re: Autumn colours

As usual, big realism in the rendering ! applause
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with W10 64b 1709 (16.299.19) / Core i7-4790 - RAM 16 MB / GeForce GTX770 2 Go Full HD
sh3d 5.6 with java 1.8.0_144 & java3D 1.6.0
[Oct 30, 2016 5:24:02 PM] Show Printable Version of Post    View Member Profile    Send Private Message [Link] Report threatening or abusive post: please login first  Go to top 
VeroniQ
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Re: Autumn colours

And very inspired and on purpose for halloween! I love it!
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Miker777
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Re: Autumn colours

Great renders Cec, love those trees
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Ceciliabr
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Re: Autumn colours

Thanks for the nice comments.

Let me explain the reason for this thread:
When someone says something can't be done, I normally try to find out for my self if that's true,
but when I learned that Enhance external brightness had no effect when textured skies were used, I never even bothered to check if that really was the case.


Sunshine is nice, but cloudy days and hazy evenings are not so bad either, at least not when it comes to photographing or making illustrations.
In order to make nice renderings of evening shots or shots of cloudy days without any directional shadows, I have until now lighted my scenes with a grid of white lights at 100% ,
placed some 15-20 meters above the surface, and I have used my standard settings which I have found to work best,
like this:




****


I have been nursing a two-year-old with an autumn-cold for a couple of days, and have distracted her from the discomfort of her cold
by having her sit with me while I have been playing with SH3D. At the same time I have told her about why the leaves are getting yellow and fall to the ground – and we have talked about vampires (!)

And very inspired and on purpose for halloween!

Exactly smile

And then I made a discovery.

Using my standard settings, I made a test rendering to decide if the lighting was sufficient.
I got a result that was too dark.




I have no idea what made me tick the Enhance external brightness button.
To my astonishment, the image rendered like this:



As it turns out, enhancing the external brightness works perfectly with textured skies,
in fact it works better than with non-textured skies.

Rendered @ midnight with a non-textured sky, using the same settings:



Same settings, sky textured with a red gradient:









Now, this is interesting.
It seems to me that the enhancement is based upon the reflections coming from the sky,
and that the shadows are created based on the time of day.

For me, this is a very useful and uplifting discovery.

What would be nice, though, is to have some more control over the brightness
– a slider maybe, or some pre-programmed steps with different intensities.


Cec
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[Edit 1 times, last edit by Ceciliabr at Oct 31, 2016 12:41:45 PM]
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bdfd
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Re: Autumn colours

Good analysis for all.

Few months ago, I tryed these kinds of tests but with one light only.
Put more is a good idea.

The proof, is the well done third picture.

Brrrr, the red sky announces the coming of Dracula... devilish
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with W10 64b 1709 (16.299.19) / Core i7-4790 - RAM 16 MB / GeForce GTX770 2 Go Full HD
sh3d 5.6 with java 1.8.0_144 & java3D 1.6.0
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[Edit 1 times, last edit by bdfd at Oct 31, 2016 1:07:23 PM]
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MartinSK
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Re: Autumn colours

There's nothing to say....Just love it.. Love love love... And I can watch that pictures again and again... Still love...
Martin
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enkonyito
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Re: Autumn colours

@Ceciliabr
As it turns out, enhancing the external brightness works perfectly with textured skies, in fact it works better than with non-textured skies.
For a sky with texture, the effect of the Enhance external brightness option depends on the used image.

Here are some images showing different versions of the photo plug-in.
Version 1.2 has an option to enhance the external brightness for a sky without texture.

Option disabled (default)

Option enabled
Santbose,

As said Mazoola, Sunflow uses different types of light for a sky without texture (SunSkyLight) and a sky with texture (ImageBasedLight).
Although they have a parameter that seems common, rendering for a sky with texture depends on the image used (example: blue sky or cloudy sky).

Option disabled

Option enabled

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EnkoNyito gallery
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Ceciliabr
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Re: Autumn colours

@MartinSK

Thank you smile
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Ceciliabr
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Re: Autumn colours

@enkonyito

Aha! Image based lighting, of course. That explains a lot.

Here are two images, one with clouds and one with a completely white sky.
Both images rendered at midnight with enhanced brightness.




IBL-comparison in daylight (09PM)



This means that the colour and the intensity of the sky can be used to manipulate
both the tint and the exposure.
Good to know.

cec
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