How To Remove The Gray Background After Rendering In Blender?

When talking about backgrounds in Blender, we may mean different things. Just the most common is that we desire to change the background for our finished render.

To alter the groundwork in Blender nosotros need to suit the world textile. This is a special material that is only applied to the world background.

In the tiptop right corner of the 3D viewport, switch to rendered viewport shading.
Become to the world textile tab in the backdrop panel, which is the red earthlike icon.
Find the surface section and aggrandize it.
To set a single color equally the background, press the color bar and select the colour you want.
To use a texture, printing the yellow dot and choose environment texture.
Press Open and browse for the image texture you want setup as the background epitome.
Background images need to be equirectangular to properly map to the spherical background.

Permit'southward continue to explore the other kinds of background, their options and how to change them.

What are the diverse kinds of backgrounds in Blender?

Backgrounds are normally used in iii dissimilar contexts within Blender. Each of which has several alternatives for backgrounds.

Rendered world background
3D viewport groundwork
Background reference images

The most referred to is the world background and hither we find the most diverse options. Here are a few examples of earth background types:

A solid colour
An equirectangular surroundings paradigm texture
Transparent groundwork
A sky texture
A mesh object, such as a airplane

For the 3D viewport, nosotros can accept a different background or display the same groundwork every bit nosotros intend to apply for the final return. Depending on the viewport shading manner there are several options.

Solid mode/wireframe
- Theme
- World
- Viewport
Textile preview/Rendered view
- Scene globe
- Studio light HDRI

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To display the same background equally the final render, set your viewport to rendered view and check Scene World in the viewport shading drop-down carte in the top right corner of the 3D viewport.

With scene world turned off Blender will utilise one of several congenital-in HDRI images as the groundwork.

The solid and wireframe fashion supports apartment color through any of the methods, or slope and vignette through using the theme background if it is setup correctly.

You can read a consummate guide to viewport shading in Blender hither:

Related content: Blender viewport shading guide

The background reference images are unlike. There are objects that nosotros bring into the scene to use as reference. Most often, these images are blueprints or sketches that we can trace geometry against for easier modeling.

You lot tin can read all nearly how to fix these upwardly in this article:

Related content: How to ready background reference images in Blender

How to use an alpha transparent groundwork for the terminal render?

Nosotros tin render the groundwork alpha transparent. This will allow us to withal get the low-cal into the scene that the background provides, simply instead of rendering the background, Blender will return it alpha transparent. We can practise this in both Eevee and Cycles.

Follow these steps:

Go to the return tab, which is the camera icon in the properties panel
Observe and aggrandize the Film section
Check the transparent checkbox
For Cycles, too bank check transparent glass and arrange the roughness threshold for glass transparency if you accept glass materials against the background in your scene.

Related content: How to use alpha transparent textures in Blender

How to use the heaven textures equally background for the final render in Blender?

In the introduction to this commodity, nosotros learned how to setup a solid color or an paradigm texture as a groundwork for rendered view and final render. Blender too has a built-in heaven texture that let us get sky lighting without needing a separate epitome.

To use the sky texture, nosotros can follow the steps outlined in the introduction, only instead of choosing an environment texture, nosotros choose the sky texture.

Another way to piece of work with the world fabric and add a sky texture is to use the shader editor. Here are the steps to add a sky texture as a background through the shader editor.

Press the shading workspace in Blenders header
In the shader editor below the 3D viewport, printing object in the shader editor header and switch to world.
If the use nodes checkbox is unchecked, bank check it.
Get to Add together->Texture->Sky texture
Drop the sky texture to the left of the background node.
Connect the Heaven texture color output to the groundwork color input.

Related content: The complete beginners guide to Blender nodes, Eevee, Cycles and PBR

The sky texture node supports three distinct types of heaven that all look a little bit different.

Hosek/Willkie
Preetham
Nishita

In Cycles all three skies are supported while Eevee lacks support for Nishita.

Each of the Sky textures accept their own set of parameters with Nishita having the almost diverse set of options. Nishita is likewise the newest addition.

You lot tin can read more than about the private settings in the Blender transmission.

External content: Blender manual, sky texture node

How to change the 3D viewport background?

Every bit touched on before, there are a few ways we tin change the groundwork. Permit's start to look at what we can do in solid and wireframe way.

For solid and viewport shading mode we have three options.

Theme
Earth
Viewport

With viewport, nosotros can fix the color directly in the viewport shading bill of fare.

The world setting will use the viewport display color. Y'all can find it in the world material tab in the viewport display color.

With theme fix, the background is decided by the theme settings. You can find these in the preferences. Go to Edit->Preferences and discover the themes department.

Press the arrowhead next to where information technology says 3D viewport.
Scroll to the bottom and expand theme space then open up slope colors.
Herre you tin set the background type and the two colors.
Only gradient low is used for unmarried color backgrounds while the gradient loftier is used for vignette and gradient type backgrounds.

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For material preview mode or rendered view we employ either the globe material or a studio light. There are several studio lite HDRIs available in Blender together with a few parameters to control brightness, blur, and opacity.

When adjusting the opacity, the viewport brandish colour from the earth material will come through more than as we lower the opacity.

We can also rotate the groundwork.

When using the scene world, the world material is in effect. For case, by setting upwardly a sky texture, unmarried colour or HDRI image as described earlier.

How to alter a reference background image?

We can bring in an paradigm as a groundwork reference image by drag-and drop. For instance from explorer, finder or whatsoever other file browser.

To change a groundwork reference image, select the image.
Go to the object information properties, which is the red prototype icon in the backdrop panel.
Open the Image section and printing the folder icon merely below the source preference
Browse for the new image.

Final thoughts

In this commodity we have looked at how to alter the background in Blender. Nosotros discovered that backgrounds could have dissimilar meanings. Primarily there is a difference between the 3D viewport groundwork and the rendered background.

Cheers for your fourth dimension