Photoshop layers may not import into After Effects if the file format is not compatible or if the layers are not properly organized in Photoshop. Make sure to save the Photoshop file in a format that After Effects supports, such as PSD or TIFF, and ensure that the layers are named and organized correctly for easy import.
To import Photoshop files into After Effects, go to File Import File, then select the Photoshop file you want to import. After Effects will automatically import the layers from the Photoshop file, allowing you to work with them in your composition.
"fx" means "effects" as in what effects you want your layers to have. You can turn the effects on and off whenever you want.
There are many resources and websites that offer information about Photoshop layers. Some of these websites that offer information are Adobe, Photoshop Essentials and Photoshop Cafe.
what does it mean to constrain the imagine proporciona when importing?
Photoshop has many effects that can be selected from the Filter menu.
Open the Layers window.
color layers is simply color layers
Yes, .psd files maintain the layers you create in Photoshop so that the next time you open your .psd file in Photoshop you can continue to work directly onto the layers.
To store image parts.
One layer.
To select all layers in photoshop for a PC open up your layers window (It is under window - layers), hold down the shift key and click on each layer that you want to group together or edit.
Photoshop is for images. Pictures and stills. After effects is for videos. Effects and post processing. Neigher can be compared.