Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Working with reflectivity

From: Creating Product Shots in 3ds Max

Video: Working with reflectivity

The shiny highlights of an Arch and I'm going to close the Material Map browser tool here, And then click OK.

Working with reflectivity

The shiny highlights of an Arch and Design material are controlled by its reflectivity parameters. We'll use those to improve the look of the leather on the wrist band. I've got the last rendered image stored in my Rendered Frame window. This is the result that we get from the Leather preset in Arch and Design with default reflectivity parameters. And it looks kind of dull, and it's kind of diffuse in character. What I'd like to see is much sharper, shinier highlights that are smaller and more focused.

Let's go into the Material editor. I'm going to close the Material Map browser tool here, because we're not going to be using that right now. And double-click on the Leather Arch and Design material. And up at the top, we've got Reflection and Reflectivity. But before we go into that, I actually had decided that I want to knock the diffuse color down to solid black so that we'll get a really rich, dark leather look. I'm going to that color for the Diffuse channel. And I'll mention in passing that you'll notice that very small numerical changes at the bottom end of the value range here will be very large changes on the screen.

In other words the difference between 0.01 and let's say 0.05 is a very noticeable change. That's 0.01 here and that's 0.05. And we're getting a nonlinear response here in the value range. And that's because Gamma is enabled. But Gamma has to be enabled in order to work with Exposure control. So there's no work around for this. You just have to get used to the fact that extremely tiny changes at the low end here will make huge changes in the actual value.

And changes in the upper range will have very little effect. In other words, the difference between 0.95 and 0.9 is not very much. So a lot of difference down here in the dark low end, and not very much difference here in the high end. And again there's no workaround for that. Anyway I'm going to set this down to exactly zero. And then click OK. And now I'll get a very rich, dark black on the screen. Now the reflectivity parameters are here. And the most important one I'd like to point out is this Highlights Plus FG Only check box.

And if that's on, then we will not get any reflection on the surface of the object. Reflection Mapping is disabled, and we do want to have Reflection Mapping because we've got a nice cloud pattern and we want to see some of that in this surface. So we want to disable that switch so that we'll get true Reflection Mapping. Then we have the amount of reflectivity and the glossiness. Glossiness controls the spread of the highlight. And with a low glossiness here of 0.25 we're getting highlights spreading across almost the whole surface.

I'm going to turn the Glossiness all the way up to a value of One, and do another rendering. With the Diffuse color set to Black, the Glossiness turned up to One and Highlights Plus FG Only disabled, we're getting shinier highlights. And they're spreading out quite a bit actually here because of the final gather and the environment that we've built. What I'm going to do is I'm actually going to reduce the overall Reflectivity, and then I'm going to play around with some of the other attributes in order to make that Reflectivity more focused here in the areas that are facing towards the camera.

First I'll reduce the overall Reflectivity down to 0.5. Which seems like a very low number, but that's going to make sure that we don't get very much reflection in these broad areas. And we'll get reflections in these areas that are facing towards us. Scrolling down a little bit we have anisotropy. Anisotropy means that the highlights can be streaked. And if we break down the word anisotropy, isotropy means the same in all directions, or round.

And anisotropy means not the same in all directions, or not round. With a value of one, the highlights are going to be round, but I actually want to have streaked highlights. Not extremely streaked, but a little bit streaked, and I'll set anisotropy down to 0.5. Now, we come to BRDF, and that's a mouth full. It stands for the Bidirectional Reflectance Distribution Function. And it has to do with the way reflective surfaces work in the real world.

Generally, things are more reflective on the edges, and not as reflective on the front surface. And that's what this lets us control. Zero degree reflection is the amount of reflectivity that we get when the surface is pointed directly toward the camera. In other words, these surfaces that are sort of flat on to the camera. That's the Zero Degree Reflection amount. And 90 Degree Reflection is the amount of reflection for surfaces that are at right angles to the camera or that their normal is facing kind of sideways.

And normally for materials like glass and so on, you want a low zero degree reflection and a high 90 degree reflection. In this case, I want the reflectivity to be just constant across the entire surface, and when it's set to zero degree and 90 degree reflections both to a value of one. Now, lets do another test render. Okay, now we're getting somewhere. We've got some nice shiny highlights here, that are facing directly towards the camera. And also some shiny highlights here on the edges. And we're getting a nice, rich black here on the main surface.

But I want to actually crank up the Reflectivity so that we're getting really bright highlights. And I could do that by going into Reflectivity here. But if I did increase it there, we would get some shiny highlights in areas that we don't want them. But there's an interesting trick that we can do. I'm going to scroll down and go into Advanced Rendering Options. Open that up. And there is a parameter here called Relative Intensity of Highlights. And this controls the balance between Reflection Mapping and the highlights from the actual lights in the scene.

And by default it's set to one. And if I give this a value of zero for example that would mean I'm only getting Reflection Mapping and no standard highlights from the lights. In this case, what I want to do is increase the relative intensity of highlights, which means that the highlights coming from the lights are going to contribute to the brightness of the reflectivity much more than the Reflection Mapping. I'm going to set that to a value of five, and then do another render.

All right, cool, that's much better. Now I'm getting a nice shiny highlight here, and no highlights here, and it's pretty much exactly what I wanted. As we go forward we can adjust those parameters and fine tune that a little bit more, now that we understand how all those different parameters interact.

Show transcript

This video is part of

Image for Creating Product Shots in 3ds Max
Creating Product Shots in 3ds Max

42 video lessons · 1263 viewers

Aaron F. Ross
Author

 
Expand all | Collapse all
  1. 5m 50s
    1. Welcome
      1m 1s
    2. Using the exercise files
      4m 49s
  2. 32m 32s
    1. Setting the Customize UI and Defaults Switcher
      1m 43s
    2. Choosing units and grid options
      1m 13s
    3. Importing a CAD file
      5m 12s
    4. Managing the scene hierarchy
      7m 46s
    5. Managing display layers
      3m 52s
    6. Working with Body objects
      2m 53s
    7. Modeling an environment sphere
      4m 17s
    8. Creating a camera
      2m 44s
    9. Framing the shot
      2m 52s
  3. 16m 46s
    1. Creating mental ray area spot lights
      4m 31s
    2. Creating photometric spot lights
      5m 9s
    3. Setting exposure for studio lighting
      3m 9s
    4. Controlling Final Gather
      3m 57s
  4. 1h 1m
    1. Creating Arch & Design materials
      7m 26s
    2. Creating an environment material
      6m 14s
    3. Enabling self-illumination
      5m 33s
    4. Applying procedural textures
      7m 20s
    5. Working with reflectivity
      7m 10s
    6. Creating a metal material
      4m 33s
    7. Adjusting highlights
      5m 4s
    8. Varying highlights with a bump map
      6m 43s
    9. Working with transparency
      4m 44s
    10. Adding ambient-occlusion nodes
      6m 40s
  5. 37m 47s
    1. Understanding image-based lighting
      2m 42s
    2. Creating a skylight
      2m 10s
    3. Adding a spherical environment map
      2m 51s
    4. Controlling bitmap coordinates
      4m 5s
    5. Setting exposure for image-based lighting
      7m 36s
    6. Adjusting materials
      5m 38s
    7. Modeling environment geometry
      5m 42s
    8. Self-illuminated image-based lighting
      7m 3s
  6. 50m 6s
    1. Controlling mental ray Sampling Quality
      5m 18s
    2. Rendering to the high-dynamic-range EXR format
      5m 52s
    3. Defining After Effects color settings
      4m 0s
    4. Adjusting the image
      10m 4s
    5. Setting up render elements
      7m 51s
    6. Creating ambient-occlusion materials
      6m 9s
    7. Layering specularity and reflections
      3m 47s
    8. Adding all render-element layers
      7m 5s
  7. 49s
    1. Goodbye
      49s

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ .

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Join now Already a member? Log in

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Creating Product Shots in 3ds Max.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member ?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferences from the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Learn more, save more. Upgrade today!

Get our Annual Premium Membership at our best savings yet.

Upgrade to our Annual Premium Membership today and get even more value from your lynda.com subscription:

“In a way, I feel like you are rooting for me. Like you are really invested in my experience, and want me to get as much out of these courses as possible this is the best place to start on your journey to learning new material.”— Nadine H.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.