What is special about HDRI?

HDRI is a much higher dynamic range of color and values than traditional bitmap formats. Instead of encoding colors like a computer monitor, using 24-bits of color for each pixel, HDRI is modeled after trichromatic base of the human eye and store actual luminance values in each pixel.

So not only is color contained, but the strength and brightness of the light at that point in the map.

The range of color and light that can be contained in this format is much greater than the RGB scale of traditional computer graphics. nXt uses HDRI values throughout the rendering process, putting nXt into the classification of HDRR (High Dynamic Range Rendering)

In HDRI, each channel holds more accurate values. For instance, if you look at a 60 watt light bulb, it will be white.

But if you look at the sun it is also white, but 10,000 times brighter. If you look at a star in the night sky, it is also white, but may be 1,000 time dimmer than the light bulb.

In RGB, white is white, in HDRI, light has a much greater range and can capture the actual amount of light coming from each of these sources.

Creating Realistic Lighting Using Your Own HDRI’s

HDR’s for lighting information or even reflections usually need to be distorted into a lat-long, or an image that is in curvilinear perspective.

In this class, you’ll learn how to create photo realistic lighting for your renders by taking your own panoramic photos using nothing but your phone.

You’ll learn why certain HDRI’s work better than others in certain situations along with how to prep them for cinema 4d.

If you are a fan of using HDR images to light your scene (Image Based Lighting), you know that you can never have enough “good” HDR environments lying around.

Instead of continually purchasing HDRs for lighting, why not make your own?

I recommend it for : Beginer

 

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