vertheim.com
  • Modelling
    • Links >
      • Modelling Hair & Fur
      • Paint Deformation
      • Painting with Objects
    • Types of Modelling >
      • Hard Edge Modelling
      • Poly Modelling >
        • VTMs >
          • Basic Geometry >
            • How to stop geometry using kites
            • Example of where to use kites
            • Poles
            • Extruding for Animation
            • Simple Muscle Definition
          • How to Start a Human Torso
          • Hands
          • Blocking Out a Hand
          • Modelling Hellboy's Head .vtm >
            • Simple breakdown in PDF format
          • Facial Geometry
          • Advanced Body Geometry
          • Cloth Modifier >
            • Making a simple tablecloth
            • Making a Cushion
            • Cloth Help files
          • Modelling Wire mesh
        • Images for Modelling Characters
      • Patch Modelling >
        • VTM
      • Spline Modelling >
        • VTMs >
          • Working with Splines
          • How to build a spline car >
            • Part 1
            • Part 2
            • Part 3
            • Part 4
            • Part 5
            • Part 6
        • Spline Car Images for VTM
      • Map Modelling >
        • Using Maps to Model (displace) >
          • VTM
      • NURBS
      • MakeHuman
    • Architectural Stuff >
      • Five AutoCAD Tips That Make a Big Difference
      • AEC Extended
      • Windows
      • Doors
      • Walls
    • Tools >
      • Realigning Pivots
      • Containers, Xrefs & Proxies >
        • Containers
      • The Array Command
      • Graphite Modelling Ribbon >
        • Read Me!
        • VTMs >
          • Painting Objects
          • Freeform Tools
          • Conform Tools
      • Optimising & Analysing
      • Solving Ngons
      • Populate Tool
      • Perspective Match
    • Speeding Up Production with a Custom UI in 3ds Max
    • Speed up your Workflow in 3DS Max!
    • Why are Ngons & Triangles so Bad?
    • Modeling with Quads or Triangles - What Should I Use?
    • Subdivision / Open Subdiv
    • Different File Formats. Which one?
    • Useful Geometry Images - How & Why
    • Retopology
    • Retopology workflow in 3ds Max - the how and why
    • Hard Edge modelling vs Organic Modelling
    • 10 Anatomy Tips for 3D Modelling
  • Photoshop
    • Links
    • Day to Night
    • The RAW Format >
      • RAW Images
      • ACR Camera Raw Filter Photoshop Clarity
      • Editing RAW Images
      • How to Read a Histogram
    • Pixelflakes.com
    • Animating in Photoshop (Video)
    • Animating in Photoshop (Keyframe)
    • Photographic Retouching and Manipulation
    • Young to Old - The Aging Process
    • Turn Anything into Fire
    • From Destructive to Constructive
    • CS4 VTMs >
      • 3D Cross Section
      • 3D Layers 1
      • 3D Layers 2
      • A Better Impression
      • Adding Depth
      • Ageing Process
      • Animation
      • Beards & Stubble
      • Blending Options
      • Boxing Clever
      • Cartoon Distortion
      • Change of Skin
      • Change of Skin 2
      • Clone Tool
      • Combining Body Parts
      • Complex Shadows
      • Content Aware 1
      • Content Aware 2
      • Custom Brush Design
      • Day for Night
      • Digging Graves
      • Drawing Ribbons
      • Easy Multiple Adjustments
      • Explosions
      • Flyaway Hair
      • Folds & Wrinkles
      • Free Transform
      • Hard Light Shading
      • Image Warp
      • Layer Masks
      • Lock & Load
      • Magical realism
      • Making it Rain
      • Metal with Curves
      • Moving Eyes
      • Multiple Shadows
      • Multiple Strokes
      • Opening Doors
      • People & Cars
      • Perspective Crop
      • Perspective Drawing
      • Portrait Restoration
      • Refine Edges
      • Replace Colour
      • Reverse Ageing
      • RGB & CMYK
      • Rust & Grime
      • Selection Basics
      • Selective Hue - Saturation
      • Silver into Gold
      • Turning Heads
      • Vanishing Point
      • Visible Light
      • Watercolour
      • Window Light
    • Basic CC Training by Digital Tutors
    • CS6 Keyboard Shortcuts
    • Upscaling Images in PS CC
    • Ivy Generator
    • Mr Bean
    • Normal Maps >
      • Nvidia Plugins
    • Brushes >
      • How to load Brush files
      • Brush Tool .vtm
      • Custom Brushes (no images)
      • Custom Brushes (with images) >
        • Destroyed Heraldry
        • Abstract Splatter
        • Destroyed Elements
        • Hand drawn Floral
        • Hand drawn Heraldic Designs
    • Colour Correcting & Matching using Curves
    • How to Use Layer Masks in Photoshop
    • Creat Ice Effect
    • Make a fantasy composite landscape
    • Discover Layer Masks in Photoshop CS6
    • 10 Tips on becoming a Hotshot Character Artist
    • Matte Painting >
      • Direct Links
      • 3 Great Matte Tutorials
      • CGMA Competition
      • Nathalie Mathé
      • 3D Artist - Matte Painting
      • Build a Matte Image using VUE
      • The Matte Paintings of the Star Wars Trilogy
    • Painting Direct on a 3D Model >
      • CS5 & Earlier >
        • Level: Beginner >
          • VTM
        • Level: Advanced >
          • VTMs >
            • Part 1
            • Part 2
            • Part 3
      • CS6 >
        • VTM
      • CC >
        • VTM
    • Creating 3D Objects in CS6
    • 3D - What's new in CS6 .pdf
    • Day to Night >
      • for Animation / Film using After Effects
      • for Stills using Photoshop
    • Using Perspective and Vanishing Point to make realistic composites
    • Using Perspective or Vanishing Point Filter >
      • VTM
      • Image used
    • Creating a 360 degree Photo
    • Techniques for Creating Realistic Eyes for Another Level of Believability
    • Blending Modes Explained
    • Tools >
      • Actions
      • Blur Tools in CS6
      • Edit / Transforms
      • 2D Displacement Maps >
        • VTM
        • Images for VTM
      • Liquify
      • Pen Tool Basics
  • Lighting
    • Links
    • An In-Depth look at Lighting
    • Volumetrics >
      • Direct Link
      • VTM
    • Ambient Occlusion >
      • VTM
      • Tutorial on Simple Nspace & AO
    • Shadows >
      • Types of Shadow - Help files & Other .vtms
      • Direct Links to books & sites
      • VTM
    • Caustics >
      • A Brief look at Caustics.pdf
      • VTM
      • Caustics Generator
    • Glow & Glare >
      • VTM
    • I.E.S. Lighting Files >
      • VTM >
        • What to do with an IES file
      • IES Viewer
      • IES Generator
      • IES Files >
        • Read Me First
        • Downlighting
        • Emergency
        • Fluorescent
        • Industrial HID
        • Rough Service
        • Track Lighting
    • MR Exposure Controls >
      • VTM
    • Stage Lighting
    • 24 things you should know about lighting
    • How to get better at Lighting
  • Substances
    • Substance Materials >
      • VTM's
    • Substance Designer >
      • Designer VTM's by Allegorithmic
      • Substance Designer Insanity Awards 2018
    • Substance Source >
      • Source Link Page
      • Mark Foreman's Medieval World
    • Substance Painter 2018 >
      • VTM's >
        • Introduction
        • 01 - Creating and setting up a project
        • 02 - Baking maps used in the texturing process
        • 03 - Creating the base paint material
        • 04 - Finishing the painted material and creating rust
        • 05 - Finishing the rust material
        • 06 - Applying Smart Materials and Layer Instancing
        • 07 - Using the brush system
        • 08 - Using Paint Effects, Projection and Cloning tools
        • 09 - Using Anchors
        • 10 - Masking materials with ID maps and Polygon Fill Tool
        • 11 - Creating the dirt and glass materials
        • 12 - Rendering a portfolio image and exporting maps
        • Project files
  • Textures
    • Links
    • How to Create a Material Library in Max 2015
    • Library >
      • Textures >
        • Computer Generated
        • Seamless / Tileable >
          • Bark
          • Brick
          • Fabric
          • Grass
          • Metal
          • Road
          • Rust
          • Stone
          • Wall
          • Wood
        • Sticky Tape
        • Foliage
        • Circuit Board
        • Paper >
          • Paper
          • Old Books
        • Grunge
        • Metal >
          • Assorted
          • Rust
        • Vectors
        • Wood
        • Water
        • Cement >
          • Cement
          • Stained Concrete
        • Fabrics
        • Peeling Paint
        • Odds & Ends
        • Trees & Foliage >
          • Maps
          • Bump
      • Images >
        • Free Images
        • Skulls
        • Assorted Photo Scenes
        • Lightning
        • Wraparound & Widescreen Images
        • Assorted Matte Paintings
        • Pirate's Galleon
        • Rocks & Stone
        • 140 Trees & Bushes
      • Blueprints >
        • Links
        • Vehicles
        • Aircraft
        • Buildings
        • Marvel Characters >
          • Male
          • Female
          • Other...
      • Map Sets >
        • Alien Wall
        • Stone Carved Wall
        • Lumpy Sharp-edged Wall
        • Mossy Castle Wall
        • Carved Rosewood Panelling
        • Distressed Concrete Blocks
        • Muddy Wagon Tracks
        • Art Deco Doors
        • Lava Cracks
      • Assorted .psd Texture Files
    • Render to Texture (Baking) >
      • Direct Link
      • VTM
    • Viewport Canvas >
      • Links
      • Paint Models directly in 3ds Max
      • Read Me >
        • Introduction and Custom Brushes
        • PSD Workflow and Using Render to Texture
        • Viewport Canvas and Render Surface Map
        • Matte Painting and Viewport Canvas
    • Road Texture Generator
    • Applying Textures >
      • UVW Unwrap >
        • VTMs >
          • Unwrapping in Max 2017
          • Great Link
          • Drinks Carton
          • Hand
          • Pelt & Peel
          • External VTM,s Parts 1 - 10
          • Peel
        • VTM Images >
          • Carton
          • Hand
        • VTM .psd Files >
          • Carton
          • Hand
        • Max file for the Hand
      • Camera Mapping >
        • VTMs >
          • Part 1
          • Part 2
          • Part 3
        • Images For Camera Mapping Exercise
        • Images for you to practice with
    • Shaders >
      • Autodesk help on Shaders
      • Submerge
    • Creating Textures >
      • Composite Materials (NOT multi-sub)
      • Ivy Generator
      • Tips for Creating Perfect Normal Maps Every Time
      • Normal Maps >
        • Tutorials
        • Projection Mapping
        • The Atomic Thrust Bucket >
          • VTM
      • 3D Displacement Maps >
        • VTM
      • Tileable Textures >
        • VTMs >
          • Part 1
          • Part 2
        • Mix Maps
      • Mix Maps & Vertex Painting
      • Hair & Fur >
        • Direct Link
        • VTM
      • Sub Surface Scattering >
        • What is it?
        • Epic Tutorial
        • VTM
      • Procedural Maps >
        • VTM
    • Plug-ins >
      • Advanced Procedural maps
    • The Problem with Hair... >
      • Modelling Hair
      • Making Hair with Planes
      • Using Hair & Fur
    • PTEX
  • Animation
    • Alan Becker - Stick man Master
    • Adobe Character Animator
    • Links
    • Animation Terminology
    • Animating Cameras for Architectural Visualisation
    • Emphasizing Animation Timing to Convey Weight and Force
    • Animation Body Mechanics - Understanding Exaggeration
    • Fire Effects using Particles
    • Animation for Games
    • Character Studies? Yes, Please!
    • Particles >
      • Sparks
      • Pouring Beer
    • Rigging >
      • Cat Rig Setup
      • Skinning
      • Skin Morph
      • Skin Wrap
      • Facial Rig
    • Roboball - Read Me >
      • Part 1 - Animation
      • Part 2 - Shading
      • Part 3 - Shading
      • Part 4 - Compositing
    • How to make objects disappear using procedural maps
    • Artist Guide to Motion Graphics >
      • Read Me First >
        • Part 1 >
          • Introduction and project overview
          • Initial project concept and storyboards
          • Adding lights to the scene in 3ds Max
        • Part 2 >
          • Using mental ray materials
          • Using 3ds Max particles to create sparks
          • Getting acquainted with State Sets in 3ds Max
        • Part 3 >
          • Using State Sets to create custom render passes
          • Separating scene elements using State Sets
          • Using Render Elements in 3ds Max
        • Part 4 >
          • Creating 3D elements that can be transferred to After Effects
          • Using the 3ds Max Compositor View
          • Installing the Autodesk Compositor Link plugin for After Effects
          • Overview of Media Sync workflow between 3ds Max and After Effects
          • Using Helper Objects to quickly place 3D layers
          • Using 3D Nulls to drive 2D effects like lens flares
        • Part 5 >
          • Baking an expression to fix motion blurred camera animation
          • Creating glows and changes with the Object ID pass
          • Overview of the compositing techniques use in the final render
          • How to install MAXScripts and add them to the interface
          • Creating custom attributes and transforming selected objects
          • Controlling many objects simply with MAXScript and expressions
    • Principles of Animation >
      • Digital Tutors' 12 Principles
      • 12 principles
      • Staging
      • Exaggeration
      • The 12 Principles Simplified
    • How to Link Sub-Objects to helpers
    • Rigging (3D Artist)
    • Pushing Your Rigs to the Limit - Using Exaggeration for More Appealing Animation
  • Rendering
    • Links
    • 5 Rendering Tips for Animators When Adding the Final Touches to Your Demo Reel
    • Basic Render Elements
    • Produce Expert Renders
    • Quicksilver >
      • Direct Link
    • Mental Ray >
      • Final Gather vs. Global Illumination
      • Global Illumination & Final Gather >
        • For Still Images >
          • VTM
        • For Animation >
          • VTM
      • Proxy Objects >
        • Xrefs
        • Containers >
          • VTMs
        • XRef vs Containers
        • MR Proxies >
          • VTM
    • V-Ray >
      • The BIG V-Ray Book
    • Corona >
      • Sub Surface Scattering with Corona MTL
    • Tools >
      • Level of Detail Utility
    • Simple Render Passes
  • 3ds Max for Beginners
  • Maya
    • Introduction to MAYA 2019
    • Basic
  • Mudbox
    • Tips for Beginners
    • Sculpting VTMs
    • Sculpting Films
    • Materials & Textures
    • Mudbox & Photoshop
    • Map Extraction
    • Retopology
    • Modelling using Displacement Maps
    • Creating hard surface stamps for Mudbox
    • Creating Vector Displacement Stamps
    • Using Vector Maps
    • Lighting
    • Using the Pose Tools
    • Ptex VTM
    • PTex - Mudbox to Max
    • Rendering Ptex with Mudbox, Maya & MR
    • The Jason Welsh Boxset >
      • Retopology Phase
      • Hard Surface Brushes
      • Creating Stamp from an Alpha
      • Image to Stamp without height information)
      • Texture to stencil
      • Sculpting with Stencils
      • Uniform Subdivision
      • UV Phase
      • Mapping Phase
      • Combining Normal Maps
      • Specular Map Option
      • Painting Option
      • Post Processing Texture Phase)
      • Post Processing Preview Cleanup and Repair Phase)
  • PBR Materials
  • Epic Games
    • Creating Materials in UE4
    • Hotkeys, Naming conventions etc.
    • Unreal Studio >
      • Preparing Models and Datasmith
      • Lightmass and Beyond
      • Steamroller
      • Unwrapping for Arch Vis
    • Unreal Engine >
      • Doors
      • Changing cameras
      • Complete Lighting Workflow
      • Beginners Guide
      • Big VTM for beginners
      • Must see! Speed Level Design
  • Post Production
    • After Effects Tutorials by Surfaced Studio >
      • Beginner >
        • How to Create Cool VFX
        • Compositions & Pre-Composing
        • Introduction to Masking
        • Adjustment Layers
        • Track Mattes
        • Parenting
        • Null Objects
        • 3D
      • Intermediate >
        • Muzzle Flash
        • How to Morph / Warp an Object
        • Advanced Morphing
        • Realistic Bullet Effects
        • How to get Hit by a Car
        • Motion Tracking
        • Explosions
        • How to Curve a Bullet
        • Bullet Hit Destruction
        • Make a Shooting Look Real
        • Common Green Screen Mistakes
        • How to Clone Yourself
      • Advanced >
        • How to Move a Camera Through a Wall or Floor
        • VFX - Dissolve into Crows (Short & Breakdown)
        • VFX - Dissolve into Crows Tutorial
        • How to Blow Up a Motorbike
        • Compositing Fireworks
        • Breaking Through a Roof
    • Dramatic Lighting in After Effects
    • Post Production in After Effects
    • After Effects, 3ds Max - Motion tracking, match moving & camera tracking
    • Mass FX, 3ds Max - Ball and Chain Complex Rigid Body Constraint
    • Links
  • Photography
    • Concepts & Terminology
    • Camera Equipment & Accessories
    • Editing & Post Processing
    • Colour Management & Printing
    • Understanding the F Stop
  • Photogrammetry
    • Photogrammetry
    • Create 3D Models & Textures From Photos
  • Photorealism Explained
  • 3D Scanning
    • Fuel 3D / Scanify
    • 3rd party stitching >
      • Autodesk Meshmixer
      • Meshlab
  • Games
    • Character, Controls, Camera: The 3Cs of Game Development
    • 10 Things Professional Game Artists Wish They Knew When They First Started
    • Animation for Games
    • Vehicle Game Asset
  • Film
    • Hollywood VFX
    • Practical Effects and Digital Effects
    • Reel FX Helps Write The Book of Life
    • Behind the Scenes of X-Men: Days of Future Past
    • Gravity
    • 'Atlantis' Rope Bridge scene by Vine Studios
    • The Evolution of VFX in Movies: The 60s Till Now
  • Work
    • How to become a Successful Freelance Artist
    • If Every 3D Job Requires "Job Experience" How Will I Ever Break into the Industry?
    • Build a Professional Showreel
    • Create Your Best Showreel
    • Five Tips for Critiquing Your Own Work
    • Demo Reel and Portfolio Tips from Game Industry Professionals
    • Escape Studios Careers Guide 2016
  • Drawing, Sketching etc
    • 10 Tips on becoming a Hotshot Character Artist
    • Planning your Drawing
    • How to Draw a Human Head
    • Drawing a Human Head at Different angles
    • Drawing Mouths and Lips
    • Mouth Expressions
    • Gesture Drawing
    • Dramatic Facial Expressions
    • Drawing Eyes
    • Drawing Hands
    • Drawing Emotion
    • Female Body Construction
    • Foreshortening
    • Drawing Anatomy >
      • Drawing Anatomy Pt 1
      • Drawing Anatomy Pt 2
    • How to Find Natural Rhythm Lines
    • Perspective
    • The Character design Process
    • Poses
    • Western vs Anime
    • How to Create Realistic Textures >
      • How to Create Realistic Textures Pt 1
      • How to Create Realistic Textures Pt 2
    • How to Create Realistic Textures Pt 3
  • What's new in Max 2019
  • Odds & Ends
    • Cinemagraphs
    • Trees
    • RSS Feeds >
      • Technology Magazines
      • 3D Artists
      • 3D Printing
      • Science Fiction
      • Tech Radar
      • ScriptSpot.com
    • Graphic Design >
      • Understanding Design Jargon: Design Principles
    • External Links >
      • Luciano Sgarbi
    • How to set up a Project Folder
    • Sound >
      • Intro to Prosound
      • Free WMA-MP3 Converter
      • Royalty Free Music
      • Sounds >
        • Links
        • Alarms
        • Animals
        • Computers
        • Email
        • Sound Effects
        • Voices
        • Gunfire
        • Short Tunes
    • Scripts >
      • 3D Stereoscopy
      • Brickerizer
      • Camera Switcher
      • Clay Render
      • Resource Collector
      • Deformed Edges
      • Rockmaker
      • BookScatter
      • Material Creator / Randomisor
      • Quick Ambient Occlusion
      • Fracture
      • Links
    • Scanned Stuff >
      • Produce Expert Renders
      • The Future of VFX
      • Rigging (3D Artist)
      • Build a Matte Image
      • 3D Artist - Matte Painting
      • Atmospheric Arch-Viz Renders
      • 50 ZBrush Secrets
      • Animation for Games
      • Wooden Arch Viz Interiors
      • Dramatic Lighting in After Effects
      • 50 Tips for better characters
      • The Art of Arch Vis
      • 50 Hot Topology Tips
      • Post Production in After Effects
      • Create Your Best Showreel
      • Get a Job in the Games Industry
      • Create 3D Games Assets
      • Digital Doubles
      • 3D Printing
      • Essential CG Projects
      • Vehicle Game Asset
      • Turbo - The Art of Dreamworks
      • Facial Animation
      • CG Worlds
      • 3ds Max 2014
      • Gravity
      • Art of Sci-Fi
      • Rigging in Max
    • 3DS Models >
      • Previews
  • Video Encoding
  • Glossary
    • Modelling
    • Materials
    • Maps
    • Lighting
    • Animation
    • Modifiers
    • Rendering
    • Scripts
    • Shadows
  • VR & AR
  • Modelling
    • Links >
      • Modelling Hair & Fur
      • Paint Deformation
      • Painting with Objects
    • Types of Modelling >
      • Hard Edge Modelling
      • Poly Modelling >
        • VTMs >
          • Basic Geometry >
            • How to stop geometry using kites
            • Example of where to use kites
            • Poles
            • Extruding for Animation
            • Simple Muscle Definition
          • How to Start a Human Torso
          • Hands
          • Blocking Out a Hand
          • Modelling Hellboy's Head .vtm >
            • Simple breakdown in PDF format
          • Facial Geometry
          • Advanced Body Geometry
          • Cloth Modifier >
            • Making a simple tablecloth
            • Making a Cushion
            • Cloth Help files
          • Modelling Wire mesh
        • Images for Modelling Characters
      • Patch Modelling >
        • VTM
      • Spline Modelling >
        • VTMs >
          • Working with Splines
          • How to build a spline car >
            • Part 1
            • Part 2
            • Part 3
            • Part 4
            • Part 5
            • Part 6
        • Spline Car Images for VTM
      • Map Modelling >
        • Using Maps to Model (displace) >
          • VTM
      • NURBS
      • MakeHuman
    • Architectural Stuff >
      • Five AutoCAD Tips That Make a Big Difference
      • AEC Extended
      • Windows
      • Doors
      • Walls
    • Tools >
      • Realigning Pivots
      • Containers, Xrefs & Proxies >
        • Containers
      • The Array Command
      • Graphite Modelling Ribbon >
        • Read Me!
        • VTMs >
          • Painting Objects
          • Freeform Tools
          • Conform Tools
      • Optimising & Analysing
      • Solving Ngons
      • Populate Tool
      • Perspective Match
    • Speeding Up Production with a Custom UI in 3ds Max
    • Speed up your Workflow in 3DS Max!
    • Why are Ngons & Triangles so Bad?
    • Modeling with Quads or Triangles - What Should I Use?
    • Subdivision / Open Subdiv
    • Different File Formats. Which one?
    • Useful Geometry Images - How & Why
    • Retopology
    • Retopology workflow in 3ds Max - the how and why
    • Hard Edge modelling vs Organic Modelling
    • 10 Anatomy Tips for 3D Modelling
  • Photoshop
    • Links
    • Day to Night
    • The RAW Format >
      • RAW Images
      • ACR Camera Raw Filter Photoshop Clarity
      • Editing RAW Images
      • How to Read a Histogram
    • Pixelflakes.com
    • Animating in Photoshop (Video)
    • Animating in Photoshop (Keyframe)
    • Photographic Retouching and Manipulation
    • Young to Old - The Aging Process
    • Turn Anything into Fire
    • From Destructive to Constructive
    • CS4 VTMs >
      • 3D Cross Section
      • 3D Layers 1
      • 3D Layers 2
      • A Better Impression
      • Adding Depth
      • Ageing Process
      • Animation
      • Beards & Stubble
      • Blending Options
      • Boxing Clever
      • Cartoon Distortion
      • Change of Skin
      • Change of Skin 2
      • Clone Tool
      • Combining Body Parts
      • Complex Shadows
      • Content Aware 1
      • Content Aware 2
      • Custom Brush Design
      • Day for Night
      • Digging Graves
      • Drawing Ribbons
      • Easy Multiple Adjustments
      • Explosions
      • Flyaway Hair
      • Folds & Wrinkles
      • Free Transform
      • Hard Light Shading
      • Image Warp
      • Layer Masks
      • Lock & Load
      • Magical realism
      • Making it Rain
      • Metal with Curves
      • Moving Eyes
      • Multiple Shadows
      • Multiple Strokes
      • Opening Doors
      • People & Cars
      • Perspective Crop
      • Perspective Drawing
      • Portrait Restoration
      • Refine Edges
      • Replace Colour
      • Reverse Ageing
      • RGB & CMYK
      • Rust & Grime
      • Selection Basics
      • Selective Hue - Saturation
      • Silver into Gold
      • Turning Heads
      • Vanishing Point
      • Visible Light
      • Watercolour
      • Window Light
    • Basic CC Training by Digital Tutors
    • CS6 Keyboard Shortcuts
    • Upscaling Images in PS CC
    • Ivy Generator
    • Mr Bean
    • Normal Maps >
      • Nvidia Plugins
    • Brushes >
      • How to load Brush files
      • Brush Tool .vtm
      • Custom Brushes (no images)
      • Custom Brushes (with images) >
        • Destroyed Heraldry
        • Abstract Splatter
        • Destroyed Elements
        • Hand drawn Floral
        • Hand drawn Heraldic Designs
    • Colour Correcting & Matching using Curves
    • How to Use Layer Masks in Photoshop
    • Creat Ice Effect
    • Make a fantasy composite landscape
    • Discover Layer Masks in Photoshop CS6
    • 10 Tips on becoming a Hotshot Character Artist
    • Matte Painting >
      • Direct Links
      • 3 Great Matte Tutorials
      • CGMA Competition
      • Nathalie Mathé
      • 3D Artist - Matte Painting
      • Build a Matte Image using VUE
      • The Matte Paintings of the Star Wars Trilogy
    • Painting Direct on a 3D Model >
      • CS5 & Earlier >
        • Level: Beginner >
          • VTM
        • Level: Advanced >
          • VTMs >
            • Part 1
            • Part 2
            • Part 3
      • CS6 >
        • VTM
      • CC >
        • VTM
    • Creating 3D Objects in CS6
    • 3D - What's new in CS6 .pdf
    • Day to Night >
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vertheim.com

Indirect Illumination: Final Gather vs. Global Illumination


If you’re familiar with rendering, you’re likely familiar with Global Illumination (GI) and Final Gather (FG). These two algorithms are the key components to simulating realistic indirect illumination like you would see in the real world. Without these two techniques the lighting in the CG environments would look unrealistic and extremely flat. So if both GI and FG simulate indirect illumination what is the difference between the two and which one should you be using for your 3D scenes?

Despite the fact that both methods are there to achieve relatively the same goal, there are actually differences between the two and may be times when you would want to use one over the other. Let’s take a close look at each method and help you determine if one method of simulating indirect illuminating is better than the other.

The Benefits of GI

GI

Global illumination can work in different ways depending on your rendering engine. In mental ray it works by the use of photons cast out into the scene. You can imagine these photons as little balls of energy that bounce around the scene, the more they bounce around the more energy they use and eventually die off.

How GI works

However, they don’t die off until they’ve sampled different areas of the scene and carried that sampled energy to different parts of the scene. This is what creates the indirect illumination. If you have a bright-red desk in the middle of a white room these photons will bounce off the red desk and scatter that energy onto the white walls of the room. Giving the room a red hue which is what would occur in the real world.

Global illumination gives you a lot of control over your scene and creates very realistic results that is closest to what you would see in the real world. It’s great to use when you have physical lights in your scene like a light bulb, torch, etc. It’s vital for architectural lighting because it produces very natural results and GI allows the light to inter-reflect between different surfaces.

Global illumination uses the light source to cast the photons out into your scene so it gives you a lot of control of the results you get and let’s you pick and choose where and how you want the photons cast. The photons with Global Illumination don’t stop after a single bounce, but rather continue to bounce around the scene until all the energy is distributed, which is how indirect lighting works in the real world.

The Benefits of FG

FG

Final gather works a little differently than Global Illumination in that it uses light rays to sample the scene instead of photons. It casts the light rays out based on the camera view and not a light source. You can think of it as the faked method for simulating indirect illumination. However, faked doesn’t always mean bad.

How FG works

Final gather is extremely fast to set up, and while it doesn’t give you the control of casting the rays from a particular light source, it makes up for it with ease of use. By simply turning on Final Gather in mental ray it will begin to calculate indirect illumination in the render and produce nice-looking results quickly. In general FG is also much faster when it comes to render time.

If you’re using an image-based light setup for your scene then Final Gather is a must because without Final Gather the image-based light won’t be calculated in the scene.

Another benefit to using FG is that you actually don’t even need a light source in your scene. Final Gather will simulate indirect illumination based on the colors and materials in the scene, which is also why you need Final Gather in order for image based lighting to work.

The Downsides to GI

The biggest downside to GI is simply render time. While you get more realistic results with GI you’ll have to pay for it with render time. Of course, this may not be a problem for you if you only have a still image to render. However, if you’re using GI for an animation then that render time can really start to add up.

GI also requires more fine tuning and tweaking to get the results you want. You may notice if you begin to emit photons from a light source in your scene it probably doesn’t produce the results you want, and the rendered scene will likely be dark and splotchy. These splotches are actually the photons that are cast out into the scene. To reduce the splotches you need to increase the amount of photons, which means increasing the render time as well.

The Downsides to FG

Final Gather alone is rather limited in that the light rays only bounce once in the scene, whereas with GI the photons bounce multiple times giving you more realistic results. Now, you can increase the number of bounces in the FG settings, but increasing this number means increasing the render time significantly. Suddenly, you have a render that takes just as long as GI.

Let’s All Be Friends!

FG and GI

While FG and GI are two different methods for rendering indirect illumination, there’s really no need to use one over the other because FG and GI are best used in conjunction with each other, not alone. The question of GI vs. FG doesn’t hold much precedence because they’re really meant to be used together.

Now, the fast results you get with FG can sometimes be enough, depending on your scene but this isn’t always the case, and GI is needed for much more realistic results. You can use GI in your scene, with a relatively low photon amount, which means a short render time and then enable FG to smooth out the results.

Having to get smooth results with GI simply takes too many photons. By using FG with GI it allows you to get the smooth results you want and eliminate the splotches without having to increase the photon amount.

Of course, there are times when you can use just one method of simulating indirect illumination. For instance, FG may be all you need for outdoor scenes and there may be no need to include GI into the calculation. If that’s the case then great! But you never know what kind of lighting you’ll need until you get in there and start tweaking – if the render looks good then that’s what counts.

If you take a look at the image above both FG and GI were used in conjunction to get the final render. If just GI was used the render time was around 6 minutes because the photon amount had to be so high in order to reduce the splotches, and even then it was not completely eliminated. With FG enabled the photon amount could be brought down and ultimately it improved the render quality and the render time stayed the same.

There are downsides and benefits to both methods; it’s up to you to decide which will work best for your scenario. Next time you’re rendering your scene ask yourself if using them in conjunction will be the best route to take, because more likely than not you’ll be happy with the results. Be sure to check out the hundreds of rendering tutorials in the Digital-Tutors library for more great tips and techniques.

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