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#11 |
Moderator
Join Date: Aug 2004
Posts: 8,529
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A lens hood is a definite bonus - reduces flare and protects the front element. Whether a petal hood or not depends on the hood design. A petal hood is generally used to prevent vignetting. Whether a hood on a 70-300 needs to be petal depends on how deep the hood is.
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#12 |
Junior Member
Join Date: Jul 2009
Location: Harrogate
Posts: 27
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ok, cheers (yet again!) JohnG. So in essence a deep lens hood is what I need be it petal or not?
I was told by yet another "family expert" that the best one are the expensive ones £25 and the cheap £5 ones would not do a job - is this also true - he said it was something to do with the fact that they were screw on (the cheap ones) and they would stop the motor of the lens! |
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#13 |
Senior Member
Join Date: Mar 2005
Location: Extreme Northeastern Vermont, USA
Posts: 4,309
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Petal hoods are generally designed to fit a single lens, and are only used on lenses which have internal focus ( the objective lens does not rotate when focusing). Obviously, a rotating front element would cause the petals to rotate as well, so these type lenses use a cone type hood.
There are many screw in accessories for lenses. None, to my knowledge interfere with the focus motor. Possibly, you could create a problem by holding the hood while the lens is trying to focus. brian |
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#14 |
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Join Date: Jul 2009
Location: Harrogate
Posts: 27
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Thank you Brian for your help - I really appreciate it!
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