[johnnyhkt]

我在高登討論區內發現一篇有關Canon 泡泡相的解說, 佢話相中泡泡其實是塵粒反光造成

http://www.hkgolden.com/forum/view.asp?message=601597&type=DC

但我自己就有小小唔明, 因為我所影到的泡泡相, 相中泡泡不只"白點"那麼簡單, 那個"白點"的形狀像一個 "蚊香" 似的, 圓圈轉轉的, 跟其說法有點出入.....我想問大家有冇經驗呢?

[johnnyhkt]

我Post 左個Sample, 請大家睇下!!


http://www.dcfever.com/photosharing/viewphoto.php?category=0&view=text&photoID=37989

[rtanghk]

可能有鬼.........`U`

[hytong]

isn't these lens flare?

[johnnyhkt]

Lens Flare 是什麼來的? 是不是指閃光燈所造成的怪影? 我想不是了, 因為這些泡泡不是經常出現的

我所用的是Canon S45

[chanraymond3]

不如send去香港代理問下啦, 好過大家估估下

我都想知真正原因

[andrew]

人地個個波波鬼~~ 你就蚊香鬼喎~ j/k

[hytong]

http://www.ghostresearch.org/ghostpics/fake/Lensfl.html

Lens flare has to do with unwanted reflection inside the lens, some of them are seen as aperture shaped light blob on the film, they ultimate reduce overall image contrast and thus image quality.
For each air-glass surface some reflection is taken place. Suitable thickness of filter/lens coating is used to combat such occurances by destructive total internal reflection.
Usually, the higher number of elements in a zoom lens make this problem worse than a prime lens.
Avoid strong light source arriving the lens directly by using some form of shade e.g. a suitable lens hood / a hat / your hand.

[johnnyhkt]

但以當時情況, 應該無其他直射光源(e.g. 射燈)直接照射入鏡頭內, 所以不是hktong兄所講的 Lens flare....

其實我在想, 是不是跟那個Assistance Lamp有關, 因為個影出來有點似, 加上每一次都是在中間的, 大家覺得呢?

我想問如果要同Canon 聯絡, 有無email address? 因為我想Send 張相比佢地睇

[hytong]

another example
http://www.luminous-landscape.com/tutorials/flare.shtml