At begining of this video, you can see a that camera is focusing (not blur) on the object, but when a train moving as a moving object passing through, suddenly the camera is not focus anymore, the camera turn into a blur. that the problem that i found on Canon PowerShot SX 410 IS when i use to recording a video on low light condition. I use auto mode. Can anyone explain why ?

タグ: canon-powershot-sx410-is, canon-powershot-(consumer-product), photography-(visual-art-form), camera, light-(quotation-subject), low-light-test, blur-video