What caused these?

[yaoxing]

Look at the bright spots that appear on the field. I know the flood lights caused them, but why did it appear? Also, notice the purple spots too? Can anyone explain to me?

It was taken using Canon EOS 300D
EF-S 55mm
Shutter: 0.5 sec
No flash, f/5.6
ISO 1600

 

[Ah Pao]

Lens flare?

Lens flare is caused by (correct me if I'm wrong) internal reflection and refractions of the light rays by the lens elements.

 

[yaoxing]

Lens flare?

Lens flare is caused by (correct me if I'm wrong) internal reflection and refractions of the light rays by the lens elements.

Hmm.... is that what makes L lenses different from non-L lenses?

Is it true that L lenses does not have such problem?

 

[KNIGHT ONG]

Lens flare happened to all lens depending on the angle you take the picture especially directly at the light. The quality of lens is just one of the factor. It can only be reduced by using lens hook and filter, sometimes lens flare do gives good result. Try 2 shoot more to see the results since it was digital.

 

[Ah Pao]

...It can only be reduced by using lens hook...

I suppose you're talking about lens hood...
Anyway, to add on, you can sometimes use lens flare to your advantage to make more dynamic shots.