I’ve been trying for days to get an HDRI image in an Arnold skydome light to render true daylight sky blues. For some reason invariably when I render the image the light coming from the skydome shifts the blue hues toward cyan enough to be irritating. I need it to appear as bright daylight, so I can’t turn down the intensity or exposure without loosing the brightness in the entire scene. Is there any way to have actual control over the hues and colors of a skydome so that the sky color and light in the scene is true to the original images?
(This is in Maya 2020 with MtoA 4.0)
I’ve been checking this with a plane that has an image file applied made from a daylight terrain photograph. If I use a normal Maya material and Maya lights (Directional and/or point lighting) the terrain color shows true color as it should, and testing a sample of the blue sky also gives fairly accurate blues as expected. So normal Maya lights give true colors, so to speak.
But, I’ve tried a variety of HDRI images for the Arnold skydome, specifically using ones that show clear blue skies, like desert skies, and with as few clouds as possible so the blue is nice and clean. But whenever I render the image using the skydome lighting, both the sky hues from the HDRI image as well as the hues on the terrain are shifted toward cyan. I’ve tried everything I can see, even using color temperature but I still can’t get the real blue daylight sky color that it should be. I’ve even opened the image in Photoshop to compare the actual image I start with to the rendered image using Arnold Renderer and the outcome is always shifted toward cyan hues.
I did try using the Arnold Color Corrector node, but apparently the node doesn’t function if the end result is a skydome (works in other instances/images…but not the skydome, at least not that I’ve found.)