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Thread: The making of a large format image

  1. #11

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    Apr 2020
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    Re: The making of a large format image

    Quote Originally Posted by Drew Wiley View Post
    Flimsy little ball head with an 8x10? I won't even bother viewing if it's that amateurish.
    I've been shopping tripod heads lately, and I'm pretty sure that's an Arca-Swiss D4m rated at 75 pounds, with independent locking axes.

    The Intrepid he's got sitting on it weighs less than 10 pounds even with lens and film back.

    How big a head does he need?

  2. #12

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    Re: The making of a large format image

    Quote Originally Posted by grat View Post
    I've been shopping tripod heads lately, and I'm pretty sure that's an Arca-Swiss D4m rated at 75 pounds, with independent locking axes.

    The Intrepid he's got sitting on it weighs less than 10 pounds even with lens and film back.

    How big a head does he need?
    Lol, definitely overkill and more expensive than the intrepid.

  3. #13
    Drew Wiley
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    Sep 2008
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    SF Bay area, CA
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    14,285

    Re: The making of a large format image

    Deadload "rating" has nothing to do with actual stability against wobble. You can buy a ladder weight rated at 300 lbs that will blow over in light breeze. It's all about torque vectors. Basic physics. The longer the extension, the lens weight at the end, the width of the camera bed, the rigidity of the standards, all these are factors perhaps more important than camera weight itself. Then add a breeze or whatever. Do the math if you like. But a mockup test prior to purchase is a hecka lot easier, or else the right to return if it doesn't work out.

  4. #14

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    Jan 2019
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    209

    The making of a large format image

    Quote Originally Posted by Drew Wiley View Post
    Deadload "rating" has nothing to do with actual stability against wobble. You can buy a ladder weight rated at 300 lbs that will blow over in light breeze. It's all about torque vectors. Basic physics. The longer the extension, the lens weight at the end, the width of the camera bed, the rigidity of the standards, all these are factors perhaps more important than camera weight itself. Then add a breeze or whatever. Do the math if you like. But a mockup test prior to purchase is a hecka lot easier, or else the right to return if it doesn't work out.
    Of course. Short of finding a b&m shop that carries high end head balls that will allow you to test it yourself, the usual rule of thumb is that the tripod plus head load capacity should be at least twice ómaybe 3 timesó the maximum combined weight of the camera and heaviest lens that you are going to put on it.

    Itís still overkill for the camera and lenses shown in the video. But itís a wonderful head, maybe second to the Cube.

  5. #15
    Drew Wiley
    Join Date
    Sep 2008
    Location
    SF Bay area, CA
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    14,285

    Re: The making of a large format image

    My 8x10 is just as light, and it would be anathema to me to risk vibration from ANY kind of ballhead, where all the torque is concentrated on the fulcrum of a narrow neck. Then it adds height between the tripod platform and camera bed at the worst possible point. I won't even use a heavy pan-tilt head. It makes a difference. Maybe in a studio setup where they're using high-speed strobe they can get away with that kind of thing, but in the field with longer exposures the name of the game is reducing vibration to a minimum. You are only as good as your weakest link.

  6. #16

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    Jan 2019
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    209

    Re: The making of a large format image

    Ok letís not turn this thread into yet another debate on the evilness of ball heads... we have plenty of those already... nuff said :-)

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