Comparative advantages for specific tasks

The strengths of After Effects are in its animation and automation features. This means that After Effects excels at tasks that can be automated from one frame to another. For example, you can use the motion tracking features of After Effects to track the motion of a microphone boom, and then automatically apply that same motion to the Clone Stamp tool. In this manner, you can remove the microphone from every frame of a shot, without having to paint the microphone out by hand on each frame.

In contrast, Photoshop has excellent tools for painting, drawing, and selecting portions of an image. Tracing a complex shape to create a mask is much easier with the Photoshop Quick Selection tool or Magnetic Lasso tool than with the masking tools in After Effects. Rather than hand-drawing a mask on each frame in After Effects, consider doing this work in Photoshop. Similarly, if you are applying several paint strokes by hand to get rid of dust, consider using the Photoshop paint tools.

Deciding which application to use for painting depends on the task. Paint strokes in Photoshop directly affect the pixels of the layer. Paint strokes in After Effects are elements of an effect, each of which can be turned on or off or modified at any time. If the purpose of applying a paint stroke is to permanently modify a still image, use the Photoshop paint tools. If you want to have complete control of each paint stroke after you’ve applied it, or if you want to animate the paint strokes themselves, use the After Effects paint tools.

The animation and video features in Photoshop Extended include simple keyframe-based animation. After Effects uses a similar interface, though the breadth and flexibility of its animation features are far greater.

After Effects 3D functionality is limited to the manipulation of two-dimensional layers in three dimensions. Photoshop, however, can manipulate complete 3D models in 3DS and U3D formats, and output two-dimensional composites and cross-sections of these 3D models from any angle. You can then use these two-dimensional images in After Effects. After Effects can also automatically create 3D layers to mimic the planes created by the Photoshop Vanishing Point tool.

Exchanging still images

After Effects can import and export still images in many formats, but you will usually want to use the native Photoshop PSD format when transferring individual frames or still image sequences between After Effects and Photoshop.

When importing or exporting a PSD file, After Effects can preserve individual layers, masks, layer styles, and most other attributes. When you import a PSD file into After Effects, you can choose whether to import it as a flattened image or with its layers separate and intact.

It is often a good idea to prepare a still image in Photoshop before importing it into After Effects. Examples of such preparation include correcting color, scaling, and cropping. It is often better for you to do something once to the source image in Photoshop than to have After Effects perform the same operation many times per second as it renders each frame for previews or final output.

By creating your new PSD document from the Photoshop New File dialog box with a Film & Video preset, you can start with a document that is set up correctly for a specific video output type. If you are already working in After Effects, you can create a new PSD document that matches your composition and project settings by choosing File > New > Adobe Photoshop File.

Exchanging movies

You can also exchange video files, such as QuickTime movies, between Photoshop and After Effects. When you open a movie in Photoshop, a video layer is created that refers to the source footage file. Video layers allow you to paint nondestructively on the movie’s frames, much as After Effects works with layers with movies as their sources. When you save a PSD file with a video layer, you are saving the edits that you made to the video layer, not edits to the source footage itself.

You can also render a movie directly from Photoshop. For example, you can create a QuickTime movie from Photoshop that can then be imported into After Effects.

Color

After Effects works internally with colors in an RGB (red, green, blue) color space. Though After Effects can convert CMYK images to RGB, you should do video work in Photoshop in RGB.

If relevant for your final output, it is better to ensure that the colors in your image are broadcast-safe in Photoshop before you import the image into After Effects. A good way to do this is to assign the appropriate destination color space—for example, SDTV (Rec. 601)—to the document in Photoshop. After Effects performs color management according to color profiles embedded in documents, including imported PSD files.