By adjusting the front settings, you can have the matte locked to these settings or have its own values. Once the type of blur is chosen, it’s time to set the amount of blur. The Radial Stamp blur creates a very fast rendering blur depending on the amount of samples. With Radial Blur, you also have the option to set the center point of the blur as well as the ability to track the center to a point in your clip with the stabilizer. Choosing Directional will allow you to set the bias, and Radial Stamp will give you samples setting. With the Defocus setting you have additional controls for the Bokeh look. For the Radial option you have Twist and Spin adjustments. Depending on which blur look you choose, specific sub-options will become available. The Blur options of the node are Box, Gaussian, Directional, Radial, Defocus, and Radial Stamp. If you are working in 16bit float, you have a clamping option for the input color and luminance levels. However, you have the option of having different blur values for the front and matte on output. The Blur node accepts both a Front and Matte input and will output the same. The Blur node is pretty self-explanatory, but as with most of the tools inside Smoke it has lots of options and customizations. You then have additional color and level controls that affect the final composite, not just the background clip. The result of the 2 inputs and background can seen on the output of the node as well as the result of the matte blend if needed. If you are familiar with how blend modes work with layer in Photoshop or After Effects all of those same looks can be achieved inside Blend & Comp. This flexibility, can create some very interesting looks and effects to the final result. Again, you have the blend mode option of Photoshop or Flame, and all of the same blend modes as before. ![]() You can choose to blend the composite over the background, input 2, or a color. Now that you have these 2 inputs blended together, that result gets blended over the background. You would set the mattes correlation setting to Correlated if you had separate mattes but we all part of the same object. You can blend the mattes as 1 over 2, 2 intersect 1, 1 inside 2, 2 inside 1, Excluded, 1 minus 2, and 2 minus 1 This can be used to create some very interesting matte intersections which can be used for many effects further down in your ConnectFX schematic like making custom transitions. When it comes to the Matte or Alpha channels for the clips you have multiple choices in how those mattes interact with each other. All of these controls are also available on the 2nd Input for the node. These color adjustments only affect the Front of the input and not it’s matte input. You have the ability to make simple color tweaks with a color trackball, and individual gain controls for the RGB channels. One of the great features that Autodesk puts into many of their nodes is the ability to make color and level adjustments on the input source. There is also an option to set the clip as premultiplied or divided from it’s alpha(matte). You can Activate or Deactivate either of the inputs, as well as, turn the matte on or off. You can also Swap Sources with a toggle button so you don’t have to rewire the inputs in the ConnectFX schematic. Needless to say, you have lots of options to blend Input 1 over Input 2. Flame modes have Spotlight and Simple Add, where Photoshop has Hard, Soft, and Vivid Light. There are a also few blend modes that are exclusive to the selections. Several of these blend modes are similar or identical, like Add, Screen, and Multiply. There are even GIMP blend modes, although I have never had the pleasure of using GIMP. Blend & Comp is a much lighter node than Action, and faster to use if all you need to do is comp.īlend and Comp has both the Photoshop blend modes and the classic Autodesk Flame blend modes. ![]() This node would be well suited if you have CG elements rendered out with alpha channels. This is very useful when you have elements, like graphics, that are already in position and all you need to do is just key them over a back clip. ![]() By default Input 1 is composited over input 2, and the result of those 2 is composited over the Background input. Now, that doesn’t sound like much, but there is more to this node once you start to breakdown the controls. You can use Blend & Comp to combine up to 2 sources with their mattes over a background. Smoke’s Blend & Comp is a simple yet very versatile node. ![]() As we begin the B’s, our first 2 nodes are very useful in setting up some quick composites of a few sources, and in creating some very organic stylizing of your clips. There are over 50 nodes in the Smoke ConnectFX arsenal. Our series on breaking down the effects nodes in Autodesk Smoke continues with Blend & Comp and Blur in ConnectFX.
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