Lens Effect -> Glow 一問

[siub]

我用個sphere加左glow做太陽,但系點解當個太陽成個響畫面時就正常.但系當太陽只系show一部份時,個glow就唔會包住整個太陽.. (如圖),何解?

[sobig]

i guess your omni light is not located as same as your sun object.
Lens effect>Glow is activated by light sources like omni, spot light and direct light.

you should use Glow without the sphere object.
Or, you can do a Glow effect by setting up a Object ID.
then, your sphere can be a light source.
Glow Element> Options>Image Sources>Object ID.

Object ID = your Object ID from your sun sphere.

[sobig]

mostly, we do the sun glow in AE.
you can render a B/W mask, then you can add glow effect by this mask in AE. easier to control.

[siub]

I set the Glow to the sphere by the Object ID way....

I found that when the sphere cannot show completely in the screen, or it is partly blocked by something with "透 alpha", the Glow may not work correctly.

I will try to figure out how it work in After Effect then. Thanks.

[h2o]

始終 glow 系一個 post effects, full size or 見到部份, 都會影響佢 calculate 既面積, 3d 做一定差d

就算 after effects 做都系, 通常會 render 個 size 大少少 or 用其他 filter track 番個 movement

[風之谷]

都系覺得render 多個mask 之後comp 上去方便d哩。

如果個cam movement唔多....人手畫個mask重方便。

反正大陽都系圓形o者...

其實好多時覺得d野唔需要用到3d。

[sobig]

that's right

[siub]

我要研究下大家既方法先得啦.唔該咁多位~