What are alpha channels?
The Alpha value describes the amount of transparency in a pixel. Just as each pixel has a value for the Red, Green and Blue channels in the RGB system, it also has an Alpha value. Check this out with the Color Picker! As with the RGB-channels, pixel values in an Alpha channel range from 0 to 255. The max value (255) refers to 100% opaque, and 0 means totally transparent. When you create a new Channel, you create a mask which can be translated to an Alpha selection and be applied to a layer. These channels are always grayscale images (you can use colors, but they will appear as shades of gray in the channel). Black represents transparent and white opaque, the grayscale in between represents different levels of transparency. Storing selections In the Select menu there is an option called Save to Channel. When you have made a selection, choose the Save to Channel option, and open the Channels dialog. You’ll find that you now have a new channel called Selection Mask copy. The channel is a
Related Questions
- I receive a failure message from Rapid Inspector that says Alpha Planes (alpha channels). What are alpha channels and what can I do to fix this?
- One aspect of Vegas Pro Id like more training in is using Parent Child relationships and use of alpha channels. Where can I get that info?
- How do Alpha Channels work?"
