LEAD Video EFX Lens Filter User Interface

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The Lens Video effect adds a fish-eye-like filtereffect to the video by magnifying an area of the video. The property page is shown in the figure below:

The Lens property page provides a user interface to change the filter's attributes.effect.

Changes will be applied directly to the streaming media with the ability to set them permanently by selecting Apply or OK, or to abandon changes by selecting Cancel. Positioning the mouse pointer over a control displays general information for that control. The following table shows the controls and their descriptions:

Control	Description
Enable check box	Enables/Disables the effect.
Refraction slider	Controls the concavity of the lens, which affects the magnification. Range: 1 to 160.
Keep original surroundings check box	Controls the lens surroundings. If selected, takes the lens surroundings from the same frame. If cleared, sets the lens surroundings to white.
Enable effect area check box	Enables/Disables the effect for a cropped video area. Area limits are set using the Left, Top, Right and Bottom controls.
Left spin edit control	Left boundary of the effect area.
Top spin edit control	Top boundary of the effect area.
Right spin edit control	Right boundary of the effect area.
Bottom spin edit control	Bottom boundary of the effect area.