What is the deal with the "tulip" lens hoods?

Discussion in 'Canon EOS' started by matthew_johnson, May 3, 2002.

  1. What is the advantage of the "tulip" lens hoods with the slits down the sides. Wouldn't the slits let light in? Any info or links would be greatly appreciated.
  2. Imagine using a standard 2"-deep round hood on a wide-angle lens.
    You'd get vignetting in all four corners, right? So you'd cut away
    the four corners, little by little, until the vignetting stopped--
    perhaps as close as 1/2" out from the front element. Result? A tulip-
    shaped hood that would keep a lot more sun off the front element than
    would a hood that was only 1/2" deep all around.


  3. That is the most clear and concise answer to what seemed like a
    simple question I have recieved. Thanks.
  4. Be careful with the tulip hoods too. With my 28-105 lens, the hood sometimes shifts around without my realizing it. It then vignettes badly in two of the corners. Very annoying.

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