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Thread: Rear lens cap

  1. #1
    purplehaze's Avatar
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    Janis

    Rear lens cap

    Any tips on how to safely loosen a rear lens cap that even my brother-in-law (the strongest man in the world) cannot get off?

    Many thanks in advance.

  2. #2

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    Re: Rear lens cap

    Hi Janis,

    This is a problem I haven't heard of before!

    If it were me, I'd probably make it a team effort - perhaps involve something that could give some kind of mechanical leverage (jar opener? pipe wrench) (on the cap end, not the lens!!!). I wouldn't worry too much about breaking the cap - they're a dime a dozen.

  3. #3
    Moderator Dave Humphries's Avatar
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    Re: Rear lens cap

    Hi Janis,

    This may seem like a silly question, but; you are turning it the right way, aren't you?

    I ask because the Nikon ones I use always seem counter intuitive, in other words it is the opposite to getting the lid off a screw top jar.

    Hope you win eventually,

  4. #4
    purplehaze's Avatar
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    Re: Rear lens cap

    Fair question, Dave, but we'd tried it both ways. I don't have a pipe wrench or a ring tip jar opener, but Jiro suggested I make a cardboard collar for the lens with just the cap sticking through and then use a blow dryer on it. Three minutes of hot air and it came off! Whew!! Thanks for your suggestions. Hope this proves useful to someone else someday.

  5. #5
    William W's Avatar
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    Re: Rear lens cap

    I deleted my original post - I took far too long making coffee and you got the problem solved in the meantime: good oh!

    WW

  6. #6
    rpcrowe's Avatar
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    Re: Rear lens cap

    This is only one of the reasons that I love this site. Help is always available when we need it....

  7. #7

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    Re: Rear lens cap

    I have never heard of this problem either but I do have a preventative solution if you are a Nikon user: buy the white caps perhaps on EBay that have no threads; rather than screwing on and screwing off, they push on and pull off. I hate the screw-type rear lens caps. I don't know if similar push-on, pull-off caps are available for other brands.

  8. #8
    darkslide's Avatar
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    Re: Rear lens cap

    While I tend to agree, in principle, in my experience push-on caps can get knocked off taking the lens out or putting it back in the bag (or at least, in my bag )

    There's also something strangely reassuring to know that the cap is nice and snug on it's bayonet...but of course, this is entirely personal

  9. #9

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    Re: Rear lens cap

    Quote Originally Posted by darkslide View Post
    While I tend to agree, in principle, in my experience push-on caps can get knocked off taking the lens out or putting it back in the bag (or at least, in my bag )

    There's also something strangely reassuring to know that the cap is nice and snug on it's bayonet...but of course, this is entirely personal
    I agree!

    And of course the simple solution may well be "don't over-tighten the darn things in the first place"

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