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Thread: 99mm lens cap?

  1. #1
    Todd Adamson's Avatar
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    99mm lens cap?

    After searching for several months, I finally found a reasonable price for a Contax W-1 lens hood for my Vario-Sonnar 28-85. It didn't occur to me that finding a lens cap for an 82mm hood would be so difficult.

    I don't need the original Contax K-94, and those are quite pricey, anyway (when you can find one!). What I would like is a screw-in metal cap that fits the threads at the front end of the W-1 hood. I either misread something or I got some bad information and thought that it would be 95mm, so I ordered a 95mm screw cap. It didn't fit, of course, because the threads are 99mm.

    Possibly I should be posting this in the WTB section, but I'm hoping more eyes will see it here, and someone will maybe know of another specific lens that takes a 99mm cap (perhaps some MF lens I don't know about?), and give me suggestions for expanding my search. I did find some auctions for new 3rd party push-on caps for the W-1 hood, one as low as $46. But I'd prefer a threaded cap, and would also prefer not to spend that much for a cap. At least as a temporary solution, I'd be happy to buy a cheap plastic pinch cap, if one exists in the 99mm size. Any ideas?

  2. #2
    AgX
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    push-over plastic caps:


    http://www.kaiser-fototechnik.de/en/...ge.asp?nr=6900


    http://www.heliopan.de/produkte/obje...tzdeckel.shtml



    Both manufacturers offer the same range of sizes.

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    I would stop and break out the calipers- I am no Contax expert, but I did some quick looking around and it appears that there was a cap made for your hood with a listed size of 95mm. 99mm would be a really strange thread ID, but 99mm makes sense as a push-on size for 95mm threads. Measure what you have and perhaps save yourself a lot of trouble.

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    benjiboy's Avatar
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    Why bother getting a plastic cap for a hood why not just use a UV filter on the lens ?.
    Ben

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    AgX
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    Because fingerprints are not good for contrast and sharpness?

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    Won't the inside ring of the W-1 hood accept a smaller cap?

    I went through a similar problem a while ago with the Nikon HN-15 hood (which looks like this). Because of it's weird shape, the HN-15 won't accept caps on the outer ring, so in the end I bought an 82mm Tamron pinch-style cap which fits on the inner ring of the hood (which is also a weird shape, since it doubles as a series IX filter holder).

    The Tamron lens caps are copies of Nikon's, but in my opinion the former are much better made, they come in a greater range of sizes, and are more reasonably priced.

  7. #7
    benjiboy's Avatar
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    Quote Originally Posted by AgX View Post
    Because fingerprints are not good for contrast and sharpness?
    How do you get fingerprints on a lens if you have a hood on it ?
    Ben

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    Todd Adamson's Avatar
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    Breaking News: I might be a bit of an idiot. I've just done careful measurements with a caliper. During these measurements, I realized that the ID of the hood isn't even threaded. There are just parallel rings lightly engraved around the ID. I made a bad assumption.

    The OD of the front of the W-1 hood is 99.3mm, so I probably won't even find a good aftermarket solution. As LJSLATER suggested, I'll likely just find a good 82mm plastic cap. The one that came on the lens doesn't seem to fit the hood, but if I go to my LCS and try a few, I can probably find one that works.

    Thanks for your replies!

  9. #9
    lxdude's Avatar
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    There are also caps of neoprene that stretch over the hood. Op/Tech has one called Hood Hat; Lens Coat calls theirs Hoodie.

    You can find them at B+H or other large retailers.
    I do use a digital device in my photographic pursuits when necessary.
    When someone rags on me for using film, I use a middle digit, upraised.

  10. #10
    AgX
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    Quote Originally Posted by benjiboy View Post
    How do you get fingerprints on a lens if you have a hood on it ?
    I did not understand that hood issue from the start. Now it becomes clear to me...

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