Hi all,

about HDRI images.
Resently i found a website (more websites) about HDR images. People photograph an image with over exposure and less exposure and put it together with photoshop or other program.

I have seen real pictures and that the pictures looks surreal. That looks really great!!

My question now is, what does HDR images with Vue. I read the manual and visit websites, and i discovered that HDR images has a sort of light power in it. That it's creating a sort of light.

Waht can i do with HDR images? In the athmosphere editor, environment editor, i can choose a simple *.bmp or *.jpg and i doesn't seem to see a real difference between the vue HDR images. The only difference i see is that HDR images sometimes looks hollow if you know what i mean..

Maybe someone has examples of Vue HDRI?

Can someone tell me my possiblities with HDR images in Vue infinite?
And has someone experience with the surreal real pictures with exposure effects?

Javil

??

Hi Javil,

Here's my understanding of what you're asking.

The original HDRI images were used to create a lighting model for 3D scenes. The idea being that every object in an environment reflects light and is thus a source of light for a scene. This creates very realistic renderings. The problem comes when you compare, say a white wall, with the sun. Typical 24 bit images cannot express this range of value, but it is necessary for the lighting model.

Thus HDRI images were created to accomodate this problem. The idea being you can now create a very very bright pixel value for the sun while still maintaining the subtle degrees of value found in a white wall. The image below uses an HDRI map to light the scene (you can even see the map in the reflections).

Then the photographers came and decided they too can benefit from using 'High Dynamic Range' to create some great photo effects. Typically when you photograph a sunset, all in the foreground is dark or black as in the image below.

But with multiple exposures of the same sunset, you can use Photoshop and HDR to create a composite to view flowers in color in the foreground-- as in the HDR image below.

All that said, even though there is a foundation in High Dynamic Range Images, there isn't much of a connection between the 3d HDRI and Photoshop's HDR.

HTH,
Chipp

Thank you for your answer!!

i understand hdri better now!! Thank you!

Javil