It's permanently attached.  He could try talking some photos highlighting 
portions of the good with a laser pointer.


On February 26, 2017 10:04:21 AM PST, Bipin Gupta <[email protected]> wrote:
>STOP! Do not cut the Lens Hood out first. Note, it has a flower petal
>type hood with the longer petal on the top & bottom.
>It's these longer ones that causes the vignetting.
>Try twisting it to the LH / RH position from the top. Take shots and
>see the results.
>
>If it won't budge (after you have tried both the CCW & CW twist), mark
>the top & bottom petals to follow the petal shape. Now use the smaller
>1/4 inch hack saw blade without the handle.
>Check the photo. Go on cutting by trial and error.
>Make sure you don't graze the lens. Stick a 3M Post It on the Lens as
>protection.
>Then use emery paper to smoothen the rough cut surface.
>
>If the LH / RH vertical petals are the culprit too, mark and cut with
>the hack saw.
>
>Good Luck.
>Bipin
>
>There is nothing worse than a sharp image of a fuzzy concept -  Ansel
>Adams

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