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  1. #1
    reellis67's Avatar
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    Korona 8x10 question

    I got my 8x10 yesterday, but I found that it would not mount on my tripod properly because the mounting screw cannot reach the threads in the camera bottom. I'm using a Bogen 3028 head, which works fine with my 4x5 Korona, but for some reason, the tripod mount seems much deeper on the 8x10. If anyone has any suggestions for addressing this problem, I would greatly appreciate it. I don't know how much longer I can stand waiting to make some negatives with this thing!

    - Randy

  2. #2

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    I'm not quite sure I can picture what you are describing. The bottom of the camera is just a flat surface with the tripod mount pressed into the center of the wood. The tripod screw on your head is not long enough to go up inside of the hole and tighten?

    I've never heard of something like this happening before, so it sounds very odd. Then again, I've never used a Bogen 3028 tripod. Do you have a quick release on it or something? Maybe that is your problem.

    Ryan McIntosh
    www.RyanMcIntosh.net

  3. #3
    reellis67's Avatar
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    Upon closer inspection, it appears that the lower part of the threaded mount may have been broken off at some point. Normaly, the mounting screw on the tripod reaches a good ways up, and will often go all the way, into the camera mount. On this camera, the wood hole where the threads should be appears larger than normal, as if there were a brass threaded insert that is now missing. There are threads in the upper half of the camera bottom, but because they only go about half way toward the bottom, the tripod mounting screw cannot reach them. I think that I may be able to replace the brass threaded insert in the wood and solve the problem if I can find one that has the right outer diameter. At first, I thought the camera mount was designed like that, but now I see that it is likely damaged, and will take a little bit of woodwork to fix things up.

    - Randy

  4. #4
    Dave Parker's Avatar
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    Most hardware stores carry brass inserts in various sizes, I have had to replace a few on various cameras, you might want to also get an easy out to help remove the one that is in the camera and broke, that way you can get the full length of the new insert in for the added strength.

    R.

  5. #5
    reellis67's Avatar
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    Thanks! I was just giving it the hairy eyeball again and think that the use of a "T-nut" for added strength might be a good idea. I am a little concerned that a brass insert might pull out if the front standard were extended a ways. I'm shooting with a triple convertible (heavy) and the total weight is substantial it seems.

    - Randy

  6. #6

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    Actually, if I remember right...you purchased that camera off Ebay and the seller noted it had a crack near the tripod mount hole. It might be a good idea to have a wood working place tap out the old one and put a new one in. It sounds to me like it was used quite abit had the threads have just worn out. Those little tripod mounts were just pressed into the wood, and I have heard horror stories about them ripping out while the photographer was caring the camera on the tripod, and the camera go falling over. If you get a new one put in, make sure its put in VERY WELL.

    Your other option would be to purchase a real tripod with a longer bolt that comes out. I use a Ries Model-A head, and the bolt comes up nearly 1/2" or more, so it goes DEEP inside the camera. This is needed when using big heavy cameras, and you do not see very long tripod bolts on some of the smaller tripods.

    I also might suggest taking some action against the seller on Ebay, and see if your can get them to pay for it, since it was not properly described. Doing stuff like this can be a pain in the ass, but thats a risk you take when buying cameras on Ebay.

  7. #7
    reellis67's Avatar
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    Good memory. The crack is more of a chip where it appears the thread likely pulled out like what you are describing. This camera never got abused though. Other than the chip on the bottom, it looks like I went back in time and bought it new from Gundlach, lens and all! I don't think it should be a big problem now that I've had time to take a closer look (I'm at work, so lots of free time, unlike at home!). What I think would be the strongest solution would be to remove the existing hardware, which looks a bit sketchy, and replace it with a T-nut. The chiped area should have no impact on the functionality of the mount, and I would feel better about it in general.

    I like the idea of a longer screw. I was thinking of making one that would have a longer reach for my existing head before I found the real problem with the mount, and I may still take your advice and make one anyway. I don't think I could replace my tripod though. It's been all over the world, to the tops of mountains, and just about everywhere I have been. I think it can handle the weight of this camera, at least for now, and I love the three way head. It works fabulously for my 4x5, and besides, I can't afford the Reis. I'll keep a weather eye on ebay for a heavier model for this specific camera just the same.

    Thanks for the help!

    - Randy

  8. #8

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    As a former Korona owner, I suggest you replace the standard 1/4-20 insert with a 3/8" threaded insert and get a larger diameter screw for your Bogen head. I found the 1/4-20 kind of wimpy for such a big camera. I also ended up putting some adhesive-backed stair-tread grip on the wood surrounding the tripod hole because the darned thing would rotate every time I opened the back to insert the filmholder, no matter how hard I screwed it to the head. You can find it at any Home Depot in the paint department. It's a 3M or DuPont product with grit on one side and peel-off tape covering the adhesive. It's sold by the inch, very cheap for the amount you need.

    Peter Gomena

  9. #9
    reellis67's Avatar
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    Peter,

    Thanks for the suggestion! I agree about the 1/4" mount, it does seem very flimsy considering the weigh of this camera. Since I am going to be beefing it up anyway, I'll certainly put in the larger mount, plus my tripod head accomodates 3/8 mounts already so I should be in good shape.

    That's an interesting note about rotation. I've not had a problem with my 4x5 so far but with the larger camera I can see how it could be an issue. The head that I am using now has a lot of surface area and is covered in rough rubber, but with the smooth wood, it might not have enough grip. I'll pick up some of your tread grip just in case. Thanks!

    - Randy

  10. #10
    Jim Jones's Avatar
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    A less intrusive cure for the camera rotating on the tripod is to coat the bottom of the camera (or the top of the tripod) with rubber cement. Thin rubber sheets to help unscrewing jar lids are available in houseware departments.

    If you use a threaded insert instead of a T-nut on your Korona, consider epoxying it in place for added security. Unless the threaded insert is a snug fit, the T-nut will be safer. To avoid altering the camera. you can make a plywood plate which screws onto what is left of the tripod socket, and which has a T-nut to accept the screw on the tripod.

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