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10-19-2007, 08:08 AM   #1
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Lens hood getting loose

The Pentax supplied lens hood on my DA 18-55 does not fit as tight as when new. The bumps in the end of the hood slots at the 12 o'clock and 6 o'clock positions (end of lens barrel) that provide the interference when rotating the hood fully on show signs of wearing down. The ends of the tabs on the inside diameter of the hood that fit into these slots shows some wear also. It's plastic on plastic and I'm concerned about it wearing to the point that the hood will not be secure at all.

Anyone else experienced this problem? If you had to have it fixed, did Pentax replace the lens barrel, hood, or both? Curious.

Thanks in advance for any replies,

BobG

10-19-2007, 09:08 AM   #2
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QuoteOriginally posted by BobG Quote
The Pentax supplied lens hood on my DA 18-55 does not fit as tight as when new. The bumps in the end of the hood slots at the 12 o'clock and 6 o'clock positions (end of lens barrel) that provide the interference when rotating the hood fully on show signs of wearing down. The ends of the tabs on the inside diameter of the hood that fit into these slots shows some wear also. It's plastic on plastic and I'm concerned about it wearing to the point that the hood will not be secure at all.

Anyone else experienced this problem? If you had to have it fixed, did Pentax replace the lens barrel, hood, or both? Curious.

Thanks in advance for any replies,

BobG
I have the same problem with my sigma 70-200 F2.8. I just live with it, the lens is out of warranty at this point any way.

Have you tried flipping the hood upside down, just to have different parts working on each other?
10-19-2007, 09:19 AM   #3
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Yes, I have flipped it. It's wearing pretty equally top and bottom.

BobG
10-19-2007, 09:24 AM   #4
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It wouldn't work properly at the 18mm end, but I've bought rubber collapsible lens hoods for most of my lenses.
They just screw into the filter threads, and are cheap at around $5.00 each

At 18mm you'll see some vignetting in the corners (they'll be dark) weather or not you use the hood.
This lens will have the same problem with a normal filter on as well.

10-19-2007, 05:05 PM   #5
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Just go to the hardware store and buy some Teflon tape that plumbers use to seal leaky pipes. Wrap several layers around your lens and affix the hood on it. That should do it.
10-19-2007, 06:50 PM   #6
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That would work Chako, but you'd have to re-do it every time that you switch the direction.
10-19-2007, 06:59 PM   #7
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Going on the tape idea, try adding tape to the lens rim grooves under the hood bayonet tabs to add extra friction.
10-20-2007, 08:25 PM   #8
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I've noticed the same problem on my 50-200. The hood doesn't seem to 'lock' as firmly as it did when it was new. I like the idea of the teflon tape.

11-03-2007, 07:02 AM   #9
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"....but I've bought rubber collapsible lens hoods for most of my lenses.
They just screw into the filter threads, and are cheap at around $5.00 each....

Source? Thanks!
11-03-2007, 02:43 PM   #10
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I know ritz camera sells them, but you can probably find them just about anywhere online.
11-03-2007, 02:51 PM   #11
roy
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i was going to say try some black electrical tape on the hood.
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