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How to create this kind of lighting in blender?

Lighting

This image itself was create from blender! But whenever I try to make this kind of lighting I always get all white results like this,

enter image description here

Can anyone help me with it? :) Just the light setup.

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To do this you can use a textured emission plane (you could simulate it with an out of focus mesh lamp too, but a plane will be less noisy).

  1. Add a big plane behind your scene:

    enter image description here

  2. Give it a procedural gradient material:

    enter image description here

    The Object coordinates are centered around the object's Origin, so by default that's where the gradient will be centered.

    To adjust the size and scale of the gradient, you can tweak the settings on the Mapping node

    I've also made the plane brighter than it appears to the camera by using different emission shaders based on the Camera Ray output of the Light Path node, to avoid over exposing the background a lot.

  3. Render

    enter image description here

This way glossy floor plane will reflect the light from the plane, creating a neat effect.

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The secret is about compositing, not lighting. I've made a simple scene just to give you an idea. 2 render layers, with transparent background. The first is a background plane textured with a gradient shader, spherical. The second is a plane, diffuse and glossy (lot of glossiness), with a glass on it (simple glass) Light is a single sun with a light blue color.

3D scene

only first layer

enter image description here

only second layer enter image description here

Composite! enter image description here

Compositing nodes setup, for further tweaking enter image description here

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    $\begingroup$ You could alternatively do in in a way that doesn't need two render layers; you could render the glass using transparent film, then overlay it on a blurred ellipse mask with an "Alpha Over" node. $\endgroup$ – ajwood Jun 23 '15 at 13:53
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    $\begingroup$ Yes, it's true, but i did like the reflections of the background on the glossy plane! $\endgroup$ – josh sanfelici Jun 23 '15 at 13:56
  • $\begingroup$ Oh right, that looks nice! $\endgroup$ – ajwood Jun 23 '15 at 13:57

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