Book Image

Photographic Rendering with V-Ray for SketchUp

By : Brian Bradley
Book Image

Photographic Rendering with V-Ray for SketchUp

By: Brian Bradley

Overview of this book

Table of Contents (18 chapters)
Photographic Rendering with V-Ray for SketchUp
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Preface

The art of capturing or interpreting reality is one that has been around in one form or another for hundreds of years. First it resided with painters, many of whom took the study of light play and interaction with the world around them to new heights. Next came photographers, who quickly realized that this incredible new medium was not only capable of capturing a snapshot of the world, but also of interpreting and presenting it in a manner that made it a genuine art form.

Today, a computer graphics artist can use the tools at his or her disposal to create or recreate anything that real life or imagination can conjure up. And while artistic interpretation and style has been used in visualizing such creations, the pursuit of genuine photographic-looking images has long been a goal towards which many have striven.

With the ever increasing hardware power and the availability of feature-rich render engines, such as V-Ray for SketchUp, that pursuit is no longer quite as arduous as it once was. With an appetite for learning and a willingness to apply ourselves in a workman-like manner, anyone with a mind can now learn how to produce photographic-looking renders of virtual objects in what (just a few short years ago) would have seemed like an impossible time frame.

If the ability to produce such images is an artistic pursuit that sounds appealing to you, then you have a lot of cool stuff to look forward to in this book.

What this book covers

Chapter 1, Diving Straight into Photographic Rendering, gets us nicely up and running with V-Ray in SketchUp as it fast tracks us through with the use of many key areas in the render engine, all of which need to be utilized by an artist if they want to produce photographic renders using V-Ray.

Chapter 2, Lighting an Interior Daytime Scene, gives us a thorough grounding in lighting a daytime interior scene in SketchUp. A variety of potential lighting approaches introduce us to a wide range of V-Ray light types available for use in a similar scenario. As we explore these approaches, we will also see the pros and cons that go along with using them.

Chapter 3, Lighting an Interior Nighttime Scene Using IES Lights, naturally presents a different set of lighting challenges to us and thus, introduces us to some more specialized tools such as the IES light type, which has been provided to help us recreate the energy output and complex light throw patterns that often come from man-made light fixtures.

Chapter 4, Lighting an Exterior Daylight Scene, revisits the V-Ray Sun & Sky tools that we touched on in Chapter 1, Diving Straight into Photographic Rendering. Here though we take a much more detailed look at how these procedural lighting tools can be used to effectively recreate very natural-looking daytime lighting conditions.

Chapter 5, Understanding the Principles of Light Behavior, introduces us to some key lighting concepts and theory that in and of themselves are not essential to our being able to use the V-Ray render engine, but will certainly help us understand how we can use light in a more realistic manner and thus, produce increasingly photographic-looking renders.

Chapter 6, Creating Believable Materials, moves us into the area of realistic material creation. In order to produce photographic-looking renders, the materials we apply to the geometry in our scenes will need to both look and react to light in the same manner as their real-world counterparts. In this chapter, we explore the creation of a number of common architectural material types as well as consider a number of possible workflow options for ourselves.

Chapter 7, Important Materials Theory, reminds us that as with lighting, understanding how and why materials behave the way they do can, go a long way towards helping us make informed texturing choices that will contribute greatly to the quality of the finished piece. In this chapter, we explore the how and why regarding a number of important material concepts such as reflectance and transmittance, all of which ultimately needs to combine in order to create realistic looking surfaces for our objects.

Chapter 8, Composition and Cameras, covers some extremely important and yet often overlooked aspects of photographic rendering in the form of composition and framing. Closely linked to these subjects are the choices that need to be made in our camera settings, such as aspect ratio, focal length, and output resolution, all of which can and will significantly affect the photographic quality of our final renders.

Chapter 9, Quality Control, introduces us to the lighting, global illumination, image sampling, and material controls that can help us produce clean, high quality photographic-looking output. The goal in this chapter is to show how (as much as possible) we are able to balance high quality output with the overall render time taken to produce it. High quality and high resolution rendering will always be a time consuming process, but we can avoid adding unnecessary time burdens to the process.

Chapter 10, Adding Photographic Touches in Post-production, takes us away from the 3D world of SketchUp and V-Ray and into the 2D world of post production. Here we use Adobe After Effects but of course, any good image editing or compositing application should suffice. The aim is to add a few extra photographic touches to the image rendered out of V-Ray, in order to add a final bit of polish to the good work that we have already done there.

What you need for this book

You'll need SketchUp Version 8 or higher and V-Ray for SketchUp Version 2.0 or higher (although many steps can be completed using Version 1.49 as well). An image editing application such as Adobe Photoshop and a compositing/post-production finishing application such as Adobe After Effects is also required.

Who this book is for

If you are a SketchUp user who would love to turn your favorite modeling application into a virtual photography studio, this book has been designed and written with you in mind. However, we are confident that even existing V-Ray users will find plenty to enjoy and benefit from this book.

Basic experience with SketchUp is expected, meaning you should be able to navigate around a 3D scene in the application, as well as know where the standard SketchUp tools can be located in the UI.

Note

While having some familiarity with photography would certainly be helpful, it is by no means required as we will walk you step-by-step through using all of the V-Ray tools necessary for the creation of genuinely photographic renders.

Conventions

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "To take a look at the first of the scene files that we will be working with throughout the duration of this book, you may want to load the Daylight_Interior_01.skp file from the Exercise Files folder that have been provided as a downloadable resource."

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "Open up the Indirect Illumination rollout".

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.

Reader feedback

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To send us general feedback, simply send an e-mail to , and mention the book title via the subject of your message.

If there is a topic that you have expertise in and you are interested in either writing or contributing to a book, see our author guide on www.packtpub.com/authors.

Customer support

Now that you are the proud owner of a Packt book, we have a number of things to help you to get the most from your purchase.

Downloading the example code

You can download the example code files for all Packt books you have purchased from your account at http://www.packtpub.com. If you purchased this book elsewhere, you can visit http://www.packtpub.com/support and register to have the files e-mailed directly to you. The files can also be downloaded from www.vrayelite.co.uk/Books/VrfSu/Photographic_Rendering/Exercise_Files.zip.

Downloading color versions of the images for this book

For your convenience we have also provided a PDF that contains higher resolution color versions of the images used in this book. These can be extremely useful as you work through various stages of the project when working with materials or examining small detail changes as we tweak individual parameters. You can download the PDF from https://www.packtpub.com/sites/default/files/downloads/3226OT_ColoredImages.pdf.

Errata

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Questions

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