What is 3D Rendering

WHAT IS 3D RENDERING - A straightforward guide to understanding the 3D Visualization Process

3D Rendering is creating a 2D image or animation (a collection of multiple images played back at a specific frame rate) of a 3D scene generated by computer software. 


Imagine this example:

  • You have a 3-dimensional object, like a ball of clay. You can mould this piece of clay into whatever shape you want by stretching it, squishing it, and rotating it around. You could even sculpt the clay into a work of art. (this is tantamount to the process of 3d modeling)
  • Let's say, you decide to sculpt this piece of clay into the shape of a human bust. To make it more realistic, you might decide to paint the skin, add brown eyes, paint the hair and eyebrows and add a red hat. (this is the equivalent of texturing the 3D model)
  • Now that you've painted it, you decide to photograph it to show your friends. However, after photographing it, you decide that the lighting needs to be more dynamic to capture all the details you added to your model. To fix this, you open the blinds for some ambient light, bring an additional lamp into the room to create some depth across your sculpture so it doesn't look too flat, and you grab a small flashlight and shine it behind the piece of clay to create a subtle rim light. (this is similar to the lighting process in 3D)
  • Now you're ready to photograph the model using a tripod camera, being sure to frame in the subject. When you click the camera's shutter button, the camera reacts to the light reflections within the space to capture a representation of the object's colour and shape in front of it. (this is similar to the 3d rendering process where the software calculates the light bounces within a 3d scene to generate an image)



A simple overview of the process is as follows:

  1. A 3D artist models the scene.
  2. Materials are set up (glass, concrete, brick etc).
  3. Lighting is set up.
  4. The image is computed (render the image).


3D Rendering Pricing

We have written extensively about this topic, to do a deep dive into rendering pricing, take a look at our pricing page.


The single most significant factor when it comes to determining the cost of your 3D Rendering project is determining the type. There is a big difference between rendering a small home vs a High Rise Tower. If you are unfamiliar with the service types below, we suggest you visit our service pages for more information regarding your specific project. These pages help you understand the type of projects that fall into each category.



3D Rendering Services by RealSpace 3D


At RealSpace 3D our specialty in 3d Rendering is created Architectural Renderings, like the examples below. These can be used for marketing, renovation planning, approval from regulatory bodies, signage and more.

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What is 3D Rendering -Continued in More Detail

3D rendering refers to adapting the likeness of an object in the form of an image. 3D rendering—both technical and artistic—employs the use of 3D software to help create images to help better explain or advertise concepts and designs. The use of technical drawings or CAD designs is common in the creation of 3D models. After creating the 3D model, the 3D artist adds lights, textures and cameras. The final step in the process referred to as "Rendering" is where the 3D software computes all inputs to create a two-dimensional image. These images can be used as a single image still rendering, stitched together into an animation or created on-the-fly in realtime programs such as video games.

Some of the more common applications of 3D rendering include; architectural renderings of real estate, interior renders of rooms and spaces, and product renderings. 3D Renderings are also standard in visualizing prototypes for entrepreneurs. 3D modelling and rendering are highly flexible, so it is possible to create a 3D render of just about anything imaginable.



The method below describes the 3D rendering of 2D images. Although the process is broken down into steps, a 3D artist does not always follow this order and may jump between processes. For example, understanding the client's vision is a continual task throughout a project.

Step 1: Understanding the client's vision

In order to build a model, a 3D artist needs to understand the project. Using plans, sketches, and reference images provided by the client, a 3D artist starts by visualizing the project in his or her head. From this point, camera angles are typically agreed upon based on the 2-dimensional plans.

Step 2: 3D modeling

The 3D artist uses specialized 3D modeling software to create a digital model. This phase is analogous to building the structure of a physical model, except that the model only exists digitally. Check out this list of free 3d modeling software.

Step 3: Materials and Texturing

The 3D artist applies images to the 3D models to make them look as realistic as possible. This step is analogous to painting a physical model or gluing materials and photographs onto it. In most cases, there is also material setup. This refers to the settings that control if something is matte or glossy. The artist can also modify the roughness of surfaces and many other parameters depending on the software used. 

Step 4: Lighting

The 3D artist sets up lights in the 3D scene to replicate real-world lighting. This process is similar to the way a photographer or videographer would set up lighting before shooting with the addition that the 3D artist needs to setup the sunlight and or ambient room lighting.

Step 5: Rendering

Rendering is when the computer generates the 2D image or images from the scene created in the steps above. It is analogous to taking a photo in the physical world.

Rendering can take anywhere from a fraction of a second to several days. Rendering time is depending on the complexity of the scene and the quality desired. This process is completed solely by the computer. In some cases, images are rendered on large clusters of computers called render farms.

Step 6: Refining

During the refining, process drafts are provided to the client for feedback, usually in a low-resolution format to speed up the revision process.

The artist makes the requested revisions to the scene, textures, and lights until the desired results are achieved. Generally, changes can be made independently: for example, most changes to the model do not require the texturing to be updated.

Step 7: Final Delivery

The agreed-upon final 2D image or images are provided to the client. Depending on the desired resolution, the images will be provided in a specific format to support and size. For web, images are generally optimized medium size jpg, while for print images are high-resolution raw files. 



Now that you better understand the rendering process, let's get to the fun part: What can rendering do for you?

You can 3D Render just about anything. Rendering is economical and convenient. 3D renders allow you to view your design long before construction or manufacturing, so it facilitates refinement and better overall design.

Through animation, you can showcase complex simulations! Today's 3D modeling software have physic engines to simulate forces on materials.  These simulations can show a structure under stress or a boat bouncing through waves.  The flow of people through buildings can be simulated to find out the most efficient arrangement of rooms or exits, and products accurately shown in use in the desired environment.


Clients can also choose to be marketing pioneers and opt for unique 3D rendering applications. Virtual reality is something many developers and marketers are experimenting within their showrooms and websites. Rendering allows for a more dynamic experience for customers. Also, the rise of 3D printing makes 3D models more practical, as your design can on display in the real world. 3D printing allows developers to both have 3D images and Animations along with a physical model for their showroom all from one supplier. 

Below is a list of a few of the most common industries 3D rendering is being used:

What does 3D Rendering cost?

There is a diverse range of prices when it comes to 3d rendering, why are some companies charging $100, while others cost $10,000? We wrote an in-depth article to answer this exact question.

Learn more about 3d rendering prices

Free 3D Software

If you are the DYI type, why not dive in yourself? For this reason, we've created a list of some of the best free 3D rendering software available to you. However, be warned that 3D is a career and not something you can pick up over a weekend, but it can be fun to try out the basics and get your feet wet.

Check it out.


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