[pingkai]

This is what I got in read _me of a dead/hot pixel test program

Q: What does a bad or hot pixel mean ?

A: A bad or hot pixel is determined by checking the luminance of the pixel. If the luminance falls above the threshold it is added to the bad pixel list. Depending on the length of exposure and other circumstances bad pixels may not be that bad but noise that can be considered to be ok.

I am not very understand this answer.

I can find a dot which the colour is a bit pale in photos at the same position.

Can hot pixel be fixed?
Is the colour of a dead pixel totally different from the original colour?

Thanks a lot!! ^^