[victorsupra]

Could anyone tell me which one is better, I know the price should be 5xxx vs 8xxx. Is the IS is really helpful for taking photo with my kids.

[K_C]

Of course, if your kid is running, the IS lens is able to freezing his action. but the lens is costly~~~

[biohazzard0]

IS cannot freezing his action , IS is just to reduce your vibration that is made by your hand

[victorsupra]

Apart from the IS, the other quality is the same?

[K_C]

"IS cannot freezing his action , IS is just to reduce your vibration that is made by your hand "

Oh, yes, thanks for ur correction.