The lens flare properties determine where the lens flare appears, how large it is, and how it is oriented.
Seed: Gives the random number generator in LenzFX a different starting point, which creates slightly different lens flares without changing any settings. Using Seed guarantees a different lens flare, even if the differences are very small. For example, if you set up a ray effect for your lens flare, you will get slightly different rays in the lens flare if you adjust the seed value.
Size: Affects the size of the overall lens flare. This value is a percentage of the size of the rendered frame. The default is 75. Other parts of the lens flare, such as glow, ring, etc., also have size adjustments, but this size setting affects the entire lens flare, including secondary flares. Adjusting individual sizes does not affect this size variable, or vice versa.
Node Sources: Lets you select the source object for the lens flare effect. The source of the lens flare may be any object in the scene, but is generally a light, such as a target spot light, or an omni light. When you click this button, you see a standard 3D Studio MAX object selection dialog box.
G-Buffer Sources: Lets you select source objects based on their object ID. This option is primarily intended for use with the Hilight module, which uses the object ID and the properties of the Glow panel, but you can use G-Buffer sources for lens flares as well.
If you select a source object, then rename the object later, you must reselect the object here to ensure the correct generation of the lens flare.
Rotation: Affects the amount that the flare rotates from its default position, as the position of the flare changes relative to the camera. This parameter is animatable. The lock button to the right of the animate button locks the secondary flares so they do rotate. When the button is disabled, the secondary flares will not rotate.
Intensity: Controls the overall brightness and opacity of the flare. Higher values produce bright opaque flares, and lower values produce dim, transparent flares.
Squeeze: Squeezes the size of the lens flare, either horizontally or vertically, to compensate for different frame aspect ratios. You can set Squeeze from 100 to -100. Positive values stretch the flare horizontally, and negative values stretch it vertically. The value is a percentage of the size of the flare.
For example, if you convert a film for use on TV, applying Squeeze would cause the lens flare to look correct on the smaller screen, and not thin and tall, although 35-MM film is much wider than a regular TV.
The G-Buffer ID can be any positive integer.
If you give the same G-Buffer ID value to more than one object, all these objects will be post-processed.