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Old Jul 10, 2011, 7:27 PM   #1
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Default Pic problem

Hello
Please help me determine if this is caused by the lens hood. Should I even use the hoods?

Thanks
Warren
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Old Jul 10, 2011, 7:58 PM   #2
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Did you have a lens hood on when you took the picture? Was the lens hood made for your lens? Is it a flower or round shape? Were you using a wide angle lens? Did you have any filters attached to your lens?
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Old Jul 10, 2011, 8:06 PM   #3
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Yep, in short that is the the lens hood. Zoom up from you widest angle slightly, that should cure it.
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Old Jul 10, 2011, 8:07 PM   #4
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Quote:
Originally Posted by dr_spock View Post
Did you have a lens hood on when you took the picture? Was the lens hood made for your lens? Is it a flower or round shape? Were you using a wide angle lens? Did you have any filters attached to your lens?
The lens hood is round(Fotodiox Dedicated (Bayonet) Lens Hood) and it is on the 55-250mm Canon lens. I also have a UV filter on it.

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Old Jul 10, 2011, 10:57 PM   #5
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do you have the link for that hood. if it is a canon copy it should not do that at all. I have that lens and a hood, and have not ran into that issue. Also is it a regular fliter thickness? The unevenness of the vignetting make me think the hood was not mounted correct also, if the hood did not seat correctly it might cause the problem.
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Last edited by shoturtle; Jul 10, 2011 at 11:04 PM.
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Old Jul 11, 2011, 2:59 PM   #6
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Quote:
Originally Posted by shoturtle View Post
do you have the link for that hood. if it is a canon copy it should not do that at all. I have that lens and a hood, and have not ran into that issue. Also is it a regular fliter thickness? The unevenness of the vignetting make me think the hood was not mounted correct also, if the hood did not seat correctly it might cause the problem.
I am using a http://www.amazon.com/Fotodiox-Dedic...0414185&sr=1-3



With a regular filter thickness.

Last edited by warren83; Jul 11, 2011 at 3:03 PM.
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Old Jul 11, 2011, 4:36 PM   #7
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That is the canon knock off. Should not have any vig issues with that hood. Does it give you the same results with the filter off?
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Old Jul 11, 2011, 4:56 PM   #8
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One possibility is that the lens filter is not on straight, and not fully screwed down.

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Old Jul 11, 2011, 6:52 PM   #9
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I did some more investigation with all your help and I was wrong. The pic is from my 18-55mm lens using the tulip style hood http://www.amazon.com/Professional-2...0428065&sr=1-7

I removed the hood and all is well. I put the hood on without the UV filter and I still get the effect as in the above pic. I can't tighten the hood anymore so think this hood is junk and I am not going to be able to use it.
Any ideas?

Thanks Much
Warren
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Old Jul 11, 2011, 7:02 PM   #10
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you need the canon knock off for the 18-55, ew60c hood. The tulip design has to long petals especially on the short end of the of the lens.
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