The defocus effect is only applied to these channels.

If you set this to something other than all or none, you can use the checkboxes on the right to select individual channels.

Sets the size of the defocus disc used.

Adjusts the width of the defocus disc without altering its height.

Scales the defocus disc simultaneously on the x and y axes. You can also split the scaling into separate width and height controls.

Sets the interpolation used to smooth out the discs. Higher values produce better results, but take longer to render.

Sets the mode of operation:

• accelerated - faster than fullprecision mode, especially for large defocus disks.

• fullprecision - delivers perfect defocus at the cost of performance.

Note:  Accelerated mode may generate speckles in horizontal lines due to imprecisions in the computer math. Normally, those speckles are invisible to the eye (delta < 0.00001), but they can cause artifacts in nodes that use comparison math (that is, if (src.red==0) ...). You can use fullprecision to avoid this speckling, but there is a significant render time increase.

Enables the associated mask channel to the right. Disabling this checkbox is the same as setting the channel to none.

The channel to use as a mask. By default, the filter effect is limited to the non-black areas of this channel.

Copies the mask input to the predefined mask.a channel. Injecting the mask allows you to use the same mask further downstream.

Inverts the use of the mask channel so that the filter effect is limited to the non-white areas of the mask.

When enabled, only apply the effect to the edge of the mask.

When disabled, the effect is applied to the entire mask.