In this video, learn how to render clean transparency without matte fringe.
- [Instructor] A clear view of how transparency works…is essential for post-production compositing.…There are several different flavors of transparency…providing different options.…Alpha channels and premultiplication…are the two main considerations with image transparency.…Usually when someone says alpha channel,…she or he means the transparency of a bitmap image.…Technically though, an alpha channel…is any auxiliary color channel that can store…any arbitrary pixel data,…and that's in addition…to the familiar red, green, and blue color channels.…
Professional file formats, such as TIF and EXR,…can include more than one alpha channel,…and these can store any data,…such as transparency or Z buffer depth.…Consumer and web-friendly formats, such as JPG and PNG,…either have no alpha support at all…or only allow one alpha channel for transparency only.…The bit depth of the channel determines the dynamic range…and number of possible values.…A 1-bit transparency channel only allows a pixel…to be fully opaque or fully transparent.…
Author
Released
4/23/2018- Choosing a visualization app
- Managing assets
- Shading with materials and textures
- Daylighting, practical lighting, and studio lighting
- Lightbox and macro photography
- Vehicles and large-scale objects
- Architecture and interior design
- Technical illustrations
- Rendering passes and light groups
- Rendering for print, prepress, and broadcast
- Animating turntables and orbits
- Rigging and animating a walkthrough
Skill Level Beginner
Duration
Views
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Introduction
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Welcome1m 1s
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Course prerequisites1m 7s
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1. Preparation and Layout
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Choosing a visualization app4m 58s
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Project asset management2m 9s
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Importing and referencing2m 27s
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2. Lighting and Shading
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Adding detail with textures2m 55s
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Daylighting2m 42s
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Practical lighting2m 30s
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Studio lighting3m 4s
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Global illumination3m 49s
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3. Photography
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Exposure and tone mapping2m 54s
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Lightbox photography1m 54s
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4. Rendering and Image Manipulation
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Compositing render passes2m 29s
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Rendering light groups2m 4s
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5. Animation
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Turntables and camera orbits3m 13s
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Controlling camera rotations4m 20s
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Rigging a walkthrough camera1m 43s
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Rendering an animation3m 56s
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Conclusion
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Next steps48s
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Video: Using transparency and alpha channels