In Artlantis 5 it was easy to control the shadowstrenght by reducing the sunvalue and/or increasing the skyvalue and adjust the iso for the same overall brightness of the picture.
-In Artlantis 6 (latest version) this only has a a visible effect if sunpower is reduced to -99%.
-In Artlantis 6.5 (latest Version) there is almost no visible change in the shadow even with sun at -99% and sky at +99% compared to sun 0% and sky 0%.
See the attached examples.
In my opinion It is very important to have control over the shadowstrenght as it was in Artlantis 5 by balancing sun- and skylight.
I hope this can be fixed in Artlantis 6.5 to work similar as it was in Artlantis 5 (without using HDRI-map)
(running on iMac i7 4GHz OS 10.12.5)
Hello,
To see a change in shadow strength you have to be in ISO/Shutter , you will not see a change using Exposure.
Once in ISO/Shutter adjust the sun and sky intensity and the ISO/Shutter sliders, and you should be able to have the same result you had with version 6.
If you want lighter shadows you need to increase the sky power.
Could you attach your atla file zipped to the post ?
I would like to make some tests.
Thanks for your interest.
What you describe is exactly what i did in the above example. To show what i mean i dit it to the extreme with sunpower set to -100 (should be almost no sunlight) and skypower set to full +100
After that iso/time are adjusted to get the right exposure. But the shadows are still visible too strong. I never use autoexposure.
In Artlantis 6.0 there are no shadows at all if sunpower is set to only to -10 or lower (although this should not be already at -10 for sun but rather at -100, like it was in earlier versions of Atl6.0)
In actual Artlantis 6.0 (V 6.0.2.26) Sunpower only has effect between -10 and +100. If sunpower is set between -10 and -100 there is no further change in sunpower anymore… that was better in older versions. But that is an other « bug » in Atl6.0.
At least you can have more/better influence on the shadowstrenght in Artlantis 6.0 than in Artlantis 6.5.
Atla:
I deleted all shaders and Backgroundpics but the atla is still 100MB zipped, so it is too large to attach.
But it is not a problem of my file but a Atl6.5 sunpower problem. Maybe just sunpower should be reduced that there are no visible shadows if set to the minimum limit (-100). Should be a simple fix i hope
thanks, but can you save as atla before zipping it because all the images are missing.
also can you attach the file saved with version 6.0, not the one saved with version 6.5
The .atla with textures an Backgroundpictures are much too big to attach (100MB zip) as i wrote before.
Why do you need the textures? It makes no difference to see what i mean. Shadows are the same.
I saved both versions (6.0 and 6.5) as atla but even without the textures they are still 18MB and too big to attach:
« Error
File too large: Testfile_Atl6.0.atla.zip »
But you can test this with any other file aswell.
I notice the same thing - when sun is set to -100, there are still shadows. You need to adjust ISO settings to lighten scene enough to see them, but they are there, and as well defined as when sun is set to 100.
The Sun control seems to only control the brightness of the sun light, and seems to have no effect on shadows.
The Sky control seems to primarily affect the brightness of the background sky, and not the light emitted by the sky.
That was not the point in these examples, as they have complete different light settings. I only wanted to show the differences in the shadows.
It is not possible to have such weak Shadows in Atl.6.5 like in the example from Atl6.0, even with extrem settings in Atl. 6.5
But i really like Artlantis a lot (6.5. and 6.0) The only thing i like better in Artlantis 6 is the better possibility to control the Sunshadows.
I am using Artlantis since many years now and just try to give feedback to make it even better.
There’s a few things you can do… one is put the sun below the horizon! You can’t have any shaders with Ambient turned on though, or they will look flat white.
Renders below all used the « Low Light » ambiance along with Ambient Occlusion of 50cm / 0.1 intensity. Heliodon: Sun to -100, Shadow to +100, Elevation of -1.
This one has the physical engine everything the same as above but ISO 1600.
Then there’s this approach - I have a White HDRI background (attached) that i use for massing studies, i like the quality of this a lot better. If I was going to use it for a perspective, I’d render to PSD and substitute in a background plate. I set the power to 50 and then compensate with the camera settings, and I leave all heliodons off.
For this white model, ISO 100 and shutter speed 1/50s.
Thank you for your interest.
Another cool thing would be the possibility to have a HDRI map only for the lighting of the scene (invisible in the render)
and at the same time a different picture (photo made of the real environment) as backgroundpicture.
So we would not have to change the background later in photoshop (method from guitarchitect with the HDRI-liht.)
