When I lift the lens upside down, the head came out by its
own weight, sometimes when shoot steeper than 75 degrees,
it slips back. I am now zooming by push-pull instead of using
the zoom ring. Am I doing the right thing?
I used it less than 10 times, but saw some dust particles
inside the lens, what shall I do now?
own weight, sometimes when shoot steeper than 75 degrees,
it slips back. I am now zooming by push-pull instead of using
the zoom ring. Am I doing the right thing?
I used it less than 10 times, but saw some dust particles
inside the lens, what shall I do now?