HDRI: mostly cloudy is mostly blue sky

[Christiaan]

Why is the "mostly cloudy" HDRI actually mostly blue sky?

And then the overcast looks like a dramatic storm's brewing.

[Christiaan]

The ability to control the cloudiness of a sky in RW basically sucks.

[Christiaan]

Is there any way to edit the image resource of an existing HDRI?

[VincentCuclair]

Is there any way to edit the image resource of an existing HDRI?

Edited October 25, 2012 by Vincent C

[Christiaan]

Yeah, sure, but how I do extract the existing image first?

[VincentCuclair]

Yeah, sure, but how I do extract the existing image first?

:confused:

[Christiaan]

Guess other option is to go find some decent HDRI sky images somewhere else.

[VincentCuclair]

http://www.graphicmania.net/how-to-create-hdr-photos-in-photoshop-cs5/

I can't find the native HDR files?

Edited October 25, 2012 by Vincent C

[Christiaan]

Thanks Vincent.

Rotating the HDRI image can help (say if you want to see a cloudier bit of the image on your render). But this should be part of the viewport render settings, not in the HDRI settings.

The main problem with the HDRI skies in VW is the blue of the sky looks like something out of the Mediterranean.

Edited October 25, 2012 by Christiaan

[Kizza]

VW backgrounds are HDR images, they can only be exported as vwx files.

To edit a background you can try:

1) Open the Renderworks Background library file

2) Drop the chosen background onto the design layer

3) File export (tiff is best - no compression)

4) Open in Photoshop

5) Make desired changes

6) Convert image to 32 Bits/Channel

7) Save as Radiance (HDR)file type

8) Edit resource as Vincent previously described and change image

9) Select your edited image and you're done.

Convoluted, I know...

[Kizza]

Guess other option is to go find some decent HDRI sky images somewhere else.

Appears to be the easiest solution.

[Bryan G.]

di you ever think that maybe the weather forecast was wrong and its mostly sunny?

Just kidding!

I too have found the existing to be poor and am working on creating my own.

[Dave Donley]

Hi Christiaan, are you complaining about the area under the ground plane, which looks blue? Because the area of the sky for Mostly Cloudy looks mostly cloudy to me. You need to have some kind of ground plane under the model off to the horizon to not see the area under the horizon.

Also these backgrounds (HDRI and Physical Sky) are best for perspective projections - are you in orthographic projection?

Also, why aren't you using the new Physical Sky? You can combine the Physical Sky and Heliodons to have actual control over the sky, instead of fixed images like the HDRI backgrounds which require you to seek out content on the web or wherever.

Edited October 26, 2012 by Dave Donley