>Welcome to Nikonians, Antonio > >You're right that many "professional" lenses come >with a flower- or petal-shaped lens hood. Such hood work >better to shade unwanted light because the camera image is >rectangular, not round. The hoods have deeper >"petals" at the top and bottom, medium at the sides >and shallowest in the corners. > >However, the front of both of your lenses rotates when you >focus - that means that the hood would rotate too, and would >therefore be misaligned, causing black shadows along the >edghes and in the corners of the image > >Pro lenses tend to have non-rotating front parts, hence they >don't have this problem.
Thank you for the reply, i so guess i am stuck with the stock hoods. Oh well, i thought i would give it a try.