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Calculations effect

From: After Effects CS3 Effects

Video: Calculations effect

The Calculations Effect is quite possibly the most powerful and useful of all of the tools in the Channel Effect Personal and if you're familiar with Photoshop, then you might recognize Calculation from Photoshop as well. So in another words, one of those Photoshop carryovers and in a sense what a Calculation Effect does, it allows you to combine Channels from one layer with the Channel from another layer and I realize this doesn't sound very cool, but it actually is really cool and from my experience one of the most helpful thing that it does, it helps with reflection. What we're going to do is, we'll create some reflections.

Calculations effect

The Calculations Effect is quite possibly the most powerful and useful of all of the tools in the Channel Effect Personal and if you're familiar with Photoshop, then you might recognize Calculation from Photoshop as well. So in another words, one of those Photoshop carryovers and in a sense what a Calculation Effect does, it allows you to combine Channels from one layer with the Channel from another layer and I realize this doesn't sound very cool, but it actually is really cool and from my experience one of the most helpful thing that it does, it helps with reflection. What we're going to do is, we'll create some reflections.

We're going to take two stupid layers, and we're going to make something cool with Calculations. So, lets say we have this Not so Crystal Ball layer, that's rendered from 3DS Max that's anything but spectacular. We also have this like a goofy picture of me that we'll use a little bit later in the Keying chapter and basically what I want to make it look like, if I want to make it look like I'm holding this Crystal Ball and you see my reflection in this ball and the Calculation Effect, it's just again, is perfect for this type of thing. So I'm going to apply Calculation to the Not so Crystal Ball layer and it seems like -- you open up Calculation and Okay, it's very, very simple, but it can be deceiving, it gets pretty complicated, pretty quick.

So open up input, basically this is saying what part of this layer, that's Not so Crystal Ball layer, we're going to contribute to the final result. By default it's set to RGBA, in other words Red, Green, Blue and Alpha. We could also change it to Grey or we can just bring in the contents of the Red, Green, Blue or Alpha Channels if we want to. I'm basically going to leave this set to RGBA for the time being, but beware that do you can't combine the Red of one Channel with another part of another Channel if you want, and also of course, you can Invert the Input as well.

Now I'm going to open up this Second Source Area, and this is where it starts getting pretty interesting. I'm going to pick a Second Layer; this is the layer to combine with. So I'm going to pick Chad Karma.tif, the layer down here there is a layer. But beware that we can use any layer in this comp, and we can also use Blending Modes, which we'll get to you in a second. But because we could also Blending Modes on a Second Layer, Calculations also becomes a really cool way to use Blending Modes on two Layers that are not next to each other in the layer stack in the Timeline.

So typically we apply Blend Modes down here in the Timeline and the Overlay Mode applies to this layer, then everything else beneath it. But if we want to apply Blend Modes in a certain way to Layer Two and Layer 99 and nothing else, the Calculation way is the way to go, something you cannot do in the Timeline. Now let's increase the Second Layer, and so, already we get this really interesting Blend Effect. We can also change the Input values of the Second Layer.

So right now we're using the RGBA, but we can also just use the Grey, we can also just use the Red, Green, Blue or Alpha, which is not that cool in this case. But if you could see here, it's starting to look like it's somewhat organic. Of course, we can Invert the Second Layer as well, but what I'm going to do, I'm going to take this back to RGBA and I'm going to crank this up a little bit too much, and again, because we're Blending Modes, we can use, say the Overlay Blend Mode. Now that's starting to look like something that's pretty awesome and we can even take this down just a little bit, so you can see just, a little bit of my reflection in there, it's kind of hanging out and maybe we could take this to a Soft Light for a more gentle effect.

But I think this is a pretty awesome result. I mean I want to above this up a little bit more, so we can get a little bit of that Green color. I can also maybe go in and add a bulge effect to this. So that it kind of makes this poof out a little bit more. But you get the idea that you can really perform some interesting Channel Calculations as you combine multiple layers from all across your composition, and I don't have to remind you how terrible our starting points were. I mean this doesn't look like much of anything, but with Calculations, bringing in another Channel, using Blend Modes with that Channel, we do have kind of an interesting effect.

These highlights are brought out more, the shadows are kind of giving way to the reflection here and the results are quite awesome.

Show transcript

This video is part of

Image for After Effects CS3 Effects
After Effects CS3 Effects

202 video lessons · 25918 viewers

Chad Perkins
Author

 
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  1. 6m 16s
    1. Welcome
      1m 14s
    2. How to use this title
      1m 22s
    3. What about third-party effects?
      1m 44s
    4. Using the exercise files
      1m 56s
  2. 29m 30s
    1. About 3D Channel effects
      6m 2s
    2. 3D Channel Extract effect
      5m 54s
    3. Depth Matte effect
      3m 18s
    4. Depth of Field effect
      4m 46s
    5. Fog 3D effect
      5m 32s
    6. ID Matte effect
      3m 58s
  3. 31m 41s
    1. About Audio effects
      1m 59s
    2. Backwards effect
      1m 50s
    3. Bass & Treble effect
      1m 54s
    4. Delay effect
      2m 56s
    5. Flange & Chorus effect
      5m 46s
    6. High-Low Pass effect
      2m 48s
    7. Modulator effect
      2m 22s
    8. Parametric EQ effect
      4m 4s
    9. Reverb effect
      2m 48s
    10. Stereo Mixer effect
      3m 2s
    11. Tone effect
      2m 12s
  4. 36m 45s
    1. About Blur & Sharpen effects
      2m 8s
    2. Box Blur effect
      2m 3s
    3. Channel Blur effect
      4m 26s
    4. Compound Blur effect
      3m 1s
    5. Directional Blur effect
      2m 32s
    6. Fast Blur effect
      3m 15s
    7. Gaussian Blur effect
      2m 34s
    8. Lens Blur effect
      3m 27s
    9. Radial Blur effect
      4m 42s
    10. Reduce Interlace Flicker effect
      1m 2s
    11. Sharpen effect
      1m 38s
    12. Smart Blur effect
      3m 16s
    13. Unsharp Mask effect
      2m 41s
  5. 41m 5s
    1. About Channel effects
      2m 46s
    2. Alpha Levels effect
      2m 2s
    3. Arithmetic effect
      2m 1s
    4. Blend effect
      3m 10s
    5. Calculations effect
      4m 10s
    6. Channel Combiner effect
      4m 19s
    7. Compound Arithmetic effect
      2m 35s
    8. Invert effect
      1m 42s
    9. Minimax effect
      5m 9s
    10. Remove Color Matting effect
      1m 58s
    11. Set Channels effect
      3m 15s
    12. Set Matte effect
      3m 6s
    13. Shift Channels effect
      4m 3s
    14. Solid Composite effect
      49s
  6. 1h 41m
    1. About Color Correction effects
      3m 58s
    2. Auto Color effect
      4m 28s
    3. Auto Contrast effect
      1m 37s
    4. Auto Levels effect
      2m 32s
    5. Brightness & Contrast effect
      2m 14s
    6. Broadcast Colors effect
      3m 51s
    7. Change Color effect
      4m 18s
    8. Change to Color effect
      2m 54s
    9. Channel Mixer effect
      7m 18s
    10. Color Balance effect
      6m 49s
    11. Color Balance (HLS) effect
      1m 15s
    12. Color Link effect
      1m 44s
    13. Color Stabilizer effect
      4m 29s
    14. Colorama effect
      11m 59s
    15. Curves effect
      5m 40s
    16. Equalize effect
      2m 37s
    17. Exposure effect
      5m 43s
    18. Gamma/Pedestal/Gain effect
      1m 40s
    19. Hue/Saturation effect
      6m 36s
    20. Leave Color effect
      2m 29s
    21. Levels effect
      4m 19s
    22. Levels (Individual Controls) effect
      31s
    23. Photo Filter effect
      2m 57s
    24. PS Arbitrary Map effect
      2m 24s
    25. Shadow/Highlight effect
      2m 45s
    26. Tint effect
      1m 49s
    27. Tritone effect
      2m 8s
  7. 1h 15m
    1. About Distort effects
      3m 22s
    2. Bezier Warp effect
      2m 19s
    3. Bulge effect
      3m 31s
    4. Corner Pin effect
      2m 35s
    5. Displacement Map effect
      6m 21s
    6. Liquify effect
      5m 13s
    7. Magnify effect
      2m 31s
    8. Mesh Warp effect
      4m 3s
    9. Mirror effect
      2m 33s
    10. Offset effect
      2m 29s
    11. Optics Compensation effect
      3m 3s
    12. Polar Coordinates effect
      3m 7s
    13. Puppet effect
      1m 16s
    14. Reshape effect
      6m 48s
    15. Ripple effect
      3m 41s
    16. Smear effect
      2m 53s
    17. Spherize effect
      1m 9s
    18. Transform effect
      4m 10s
    19. Turbulent Displace effect
      3m 48s
    20. Twirl effect
      3m 4s
    21. Warp effect
      2m 4s
    22. Wave Warp effect
      5m 20s
  8. 4m 48s
    1. About Expression Controls effects
      4m 48s
  9. 1h 33m
    1. About Generate effects
      2m 25s
    2. 4-Color Gradient effect
      3m 10s
    3. Advanced Lightning effect
      9m 41s
    4. Audio Spectrum effect
      3m 28s
    5. Audio Waveform effect
      2m 24s
    6. Beam effect
      4m 28s
    7. Cell Pattern effect
      4m 57s
    8. Checkerboard effect
      3m 14s
    9. Circle effect
      2m 2s
    10. Ellipse effect
      2m 48s
    11. Eyedropper Fill effect
      2m 14s
    12. Fill effect
      2m 13s
    13. Fractal effect
      2m 13s
    14. Grid effect
      2m 33s
    15. Lens Flare effect
      4m 43s
    16. Lightning effect
      3m 40s
    17. Paint Bucket effect
      4m 15s
    18. Radio Waves effect
      7m 53s
    19. Ramp effect
      3m 1s
    20. Scribble effect
      2m 41s
    21. Stroke effect
      4m 0s
    22. Vegas effect
      5m 20s
    23. Write-on effect
      10m 34s
  10. 34m 19s
    1. About Keying effects
      6m 27s
    2. Color Difference Key effect
      7m 48s
    3. Color Key effect
      1m 19s
    4. Color Range effect
      3m 33s
    5. Difference Matte effect
      2m 23s
    6. Extract effect
      2m 43s
    7. Inner/Outer Key effect
      3m 2s
    8. Linear Color Key effect
      2m 37s
    9. Luma Key effect
      2m 6s
    10. Spill Suppressor effect
      2m 21s
  11. 9m 58s
    1. About Matte effects
      1m 18s
    2. Matte Choker effect
      4m 58s
    3. Simple Choker effect
      3m 42s
  12. 50m 19s
    1. About Noise & Grain effects
      3m 53s
    2. Add Grain effect
      7m 57s
    3. Dust & Scratches effect
      3m 8s
    4. Fractal Noise effect
      13m 28s
    5. Match Grain effect
      3m 10s
    6. Median effect
      1m 25s
    7. Noise effect
      3m 25s
    8. Noise Alpha effect
      4m 43s
    9. Noise HLS effect
      2m 16s
    10. Noise HLS Auto effect
      57s
    11. Remove Grain effect
      5m 57s
  13. 7m 43s
    1. About Paint effects
      1m 55s
    2. Paint effect
      59s
    3. Vector Paint effect
      4m 49s
  14. 14m 44s
    1. About Perspective effects
      1m 38s
    2. 3D Glasses effect
      1m 50s
    3. Basic 3D effect
      1m 15s
    4. Bevel Alpha effect
      2m 0s
    5. Bevel Edges effect
      1m 37s
    6. Drop Shadow effect
      2m 46s
    7. Radial Shadow effect
      3m 38s
  15. 55m 3s
    1. About Simulation effects
      2m 45s
    2. Card Dance effect
      4m 22s
    3. Caustics effect
      4m 39s
    4. Foam effect
      6m 31s
    5. Particle Playground effect
      21m 2s
    6. Shatter effect
      8m 39s
    7. Wave World effect
      7m 5s
  16. 37m 16s
    1. About Stylize effects
      2m 7s
    2. Brush Strokes effect
      1m 58s
    3. Color Emboss effect
      1m 45s
    4. Emboss effect
      1m 24s
    5. Find Edges effect
      2m 20s
    6. Glow effect
      6m 40s
    7. Mosaic effect
      1m 55s
    8. Motion Tile effect
      2m 33s
    9. Posterize effect
      2m 1s
    10. Roughen Edges effect
      4m 29s
    11. Scatter effect
      1m 3s
    12. Strobe Light effect
      3m 54s
    13. Texturize effect
      1m 13s
    14. Threshold effect
      3m 54s
  17. 21m 46s
    1. About Text effects
      1m 29s
    2. Basic Text effect
      2m 26s
    3. Numbers effect
      6m 50s
    4. Path Text effect
      8m 30s
    5. Timecode effect
      2m 31s
  18. 15m 22s
    1. About Time effects
      1m 32s
    2. Echo effect
      2m 35s
    3. Posterize Time effect
      1m 3s
    4. Time Difference effect
      3m 0s
    5. Time Displacement effect
      1m 57s
    6. Timewarp effect
      5m 15s
  19. 27m 19s
    1. About Transition effects
      1m 53s
    2. Block Dissolve effect
      2m 27s
    3. Card Wipe effect
      11m 28s
    4. Gradient Wipe effect
      4m 0s
    5. Iris Wipe effect
      2m 39s
    6. Linear Wipe effect
      1m 0s
    7. Radial Wipe effect
      1m 48s
    8. Venetian Blinds effect
      2m 4s
  20. 16m 36s
    1. About Utility effects
      2m 39s
    2. Cineon Converter effect
      2m 34s
    3. Color Profile Converter effect
      3m 44s
    4. Grow Bounds effect
      2m 33s
    5. HDR Compander effect
      4m 0s
    6. HDR Highlight Compression effect
      1m 6s
  21. 22s
    1. Goodbye
      22s

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