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Adobe After Effects: Luma Matte & Alpha Matte. (Confused).

Coldkilla

Diamond Member
Hi all. I'm new to after effects and have been following a series of tutorials. The lesson I just finished on Matte's has my head hurting a bit.

My understanding of mattes: Making traditional un-transparent things, transparent. I have tried a bunch of experiments and I was wondering if I'm understanding this right. (Most likely not).

• Luma Matte:
-----Everything bright is transparent to next layer.
-----Everything dark is transparent to second next layer.
• Luma Inverted Matte:
-----Everything Dark is transparent to next layer.
-----Everything Bright is transparent to second next layer.

• Alpha Matte
-----Top layer replaced by bottom layer. Bottom layer becomes transparent.
• Alpha Inverted Matte
-----Top layer becomes transparent. Bottom layer becomes remains the same.


I'm just having trouble trying to connect the dots here. Is this how I should be thinking in terms of Luma & Alpha? I'm new to After Effects so if you would be so kind as to respond without using too many technical terms I'd appreciate it.
 
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