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Poser - OFFICIAL F.A.Q (Last Updated: 2025 Feb 15 11:01 am)



Subject: Lighting question / IBL


3dvitality ( ) posted Sat, 15 September 2007 at 9:39 AM · edited Sat, 15 February 2025 at 4:54 AM

Hi,
many of you have possible seen this in the Poser gallery:

http://www.renderosity.com/mod/gallery/index.php?image_id=1520561&member ,

a short tutorial about using HDR and IBL in P7.

Beside I have some heavy problems with the HDR, there is a question I find no solution for.
How do you determine the main light ( = sun) in your scene? Only by fiddling around till the shadows match the picture?
To describe what I mean:

Mostly we want to use IBL  to get a correct lighting for a object which will be implemented in a photo.
If I use in Poser a single light with IBL I'll get not the correct lighting. I have to add one ore more lights, one of them set as "sun".
To match my photo the "sun"-light has to come from the right direction and angle - and this is the very complicated part...  and I have no solution, patience and also often no time...
There are 3D solutions on the market where I can put in the correct position of the sun at the point on earth I'm be and the time of day and the result is a correct infinite (sun)light in the scene (for example-> Cinema4D owns this feature).
Is there a solution for Poser possible, is there a phython script outthere?  Or do I have a permanent fiddling with this settings?

Thanks in advance for some advices,

Volker


3dvitality ( ) posted Sat, 15 September 2007 at 10:51 AM

:woot: btw.: I've read the manual ...   😄


yelocloud ( ) posted Sat, 15 September 2007 at 11:58 AM

Here are some posts from MEC4D that should help understand about "sunlight/specular shadow light" placement

Stonehenge 3D light & Set

STUDIO LIGHT :::::: 28 Poser6 Light Sets with 28 LDRI Angular maps for IBLAO

::P6:: create your own Specular Light for ALL your surface with IBL AO

I am also starting a thread on this topic, or perhaps continuing it here.
Keep reading on "Peace Love & Pose"


yelocloud ( ) posted Sat, 15 September 2007 at 12:37 PM

Attached Link: HDRI / IBL discussion & exploration thread

Here is a new thread to try & gett he discussion going. I've sent word out to the heavy hitters LOL, lets see where the discussion goes.


3dvitality ( ) posted Sat, 15 September 2007 at 2:00 PM

Thank you very much ...   I'll have a eye on all these threads... 😄


Miss Nancy ( ) posted Sat, 15 September 2007 at 3:25 PM

turn on ray-traced shadows and rotate the light to the approximate position of the sun in the HDRI. I heard a rumour that poser7 doesn't implement HDRI at the full pixel resolution. one guy even said that a 6-pixel image will give the same result as a 1024X1024 image, but I doubt it.



Mec4D ( ) posted Tue, 23 October 2007 at 3:05 AM

The Image resolution of the Light probe in Poaser7 have nothing to do wiht the quality of the Lightprobe this have to do with the scale of the light that come from the LightProbe to the center of the scene so 6 pixels would be show only the light that is most close to the object, and how bigger the value of the image resolution how far away and more light elements show up on the center of the scene..
will post example in a 5

_________________________________________________________

"Surrender to what it is - Let go of what was - Have faith in what will be "


Mec4D ( ) posted Tue, 23 October 2007 at 3:47 AM

file_391483.jpg

as you see Miss Nancy.. that was only a rumor by somebody that don't got deeper in the subject.. or used correct things to test it out.. Poser7 need max resolution 500 for Light probe and not bigger there are many types of LightProbes, regular or close up Lightprobes.. so maybe pple get deeper in the stuff before they talk anything and make it mysterious missing the facts.. usual everyone judge something regarding to own taste without to be objective about the situation..

And a note to **renderteam..
**you know this is very simple to get the right sun position if you do your job right, if you are the creator of the light probe you know where was the sun, if not your photo have always a exif file where the time show up.. if you know the direction in poser then that would be very simple to locate the sun light.. the ball in poser with the light around is the key..(that is the globe, representing also the Lightprobe... the front is the south, the right is the east and the left is the west.. in the middle is always the time around 12:00 now you can get back left or right but very slow..so for example the little bit left from the center would be arounf 1-2 pm etc.. it is very simple.. in some cases where the light probe was done against the sun as it was in my image Balissma you post above i moved the sun light but well behid the ball and I know what time it was.. when you open the photoshop you see the file info and there is the actual time when the pick was made..
the position of the sun in summer or winter is different.. so the shadows but well this is very simple to recreate..the sun light always show up in the 180 deegres of the frontal scene never get above +40 degree higher from the horizon for central west europe and centeral us

_________________________________________________________

"Surrender to what it is - Let go of what was - Have faith in what will be "


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