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CO 7.02 Tether Problems with Nikon D800

Kevin Murphy
I'm using CO Pro 7.02 on both a iMac 27" and an Macbook pro, both running osx 10. The iMac 27" has a hard time maintaining the connection to my d800 during a tethered shoot. It keeps loosing the camera, or gives me an error that it can't connect to it. However, the problem does not exist when I connect the same camera to the macbook pro with the same version of the sofware. Any idea what it might be?

It's frustrating that it keeps hanging up or makes CO unresponsive.
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  • Drew Altdo
    My guess would be the strength of the port on the iMac.
    iMac and MacMini systems are the least robust of Apple products so they often have lower specification for things like power available at certain ports.
    Perhaps a USB repeater would help or a shorter cable?
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  • elie honein
    I had a similar problem with my 17" macbook pro using USB2.0 but when I use the D800 with USB 3.0 my problem is solved.
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  • photomike
    I have had the exact same issue with my Imac with a 5M usb cable. With all of my tests I have done, I figured it was the port power on the iMac's that runs low. A small powered usb hub I velcroed to the back of my IMac worked for me. I have tried different repeater cables with not much success.
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  • Terence Patrick
    I've found the same issue with Canon 5D3 tether sessions and the culprit has always been a lack of bus power in the USB ports due to external hard drives being plugged in at the same time as the camera. The on-location solution is to use the Versa batteries with the Macbook Pros. Works every time.

    http://www.versabattery.com/battery_inf ... nformation
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  • dale11833
    Hi,
    Does anyone have a recommendation of a good brand and model of powered usb hub?
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  • Permanently deleted user
    I agree with everyone else that this is just a bus power issue and cable length issue. One solution I tried and works is, as mentioned, a usb hub. I had a long 30ft that would work with some older cameras, but the file would always not make it all the way with the d800 until started tethering with the USB hub.

    http://www.amazon.com/gp/product/B005HA ... UTF8&psc=1

    and then for more a portable solution I also grabbed a USB Y cable:

    http://www.amazon.com/gp/product/B0013L ... UTF8&psc=1

    regular usb is made up of 4 wires inside the cable. 2 for data and 2 power (one hot, one ground). The Y cable essentially beefs up the power side of the usb cable delivering more bus power to the hub. This cable will sometimes come with external usb powered hdds.

    I've also found that just having the USB port between the tether cable and computer has actually solved any issues I've had without attaching the extra power end from the Y cable. It somehow will even out the power being supplied to the cable I guess.
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  • Kevin Murphy
    I'm going to try the powered usb hub and see how that works! Thanks everyone!!!
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  • Kevin Murphy
    I bought a Mac Book Pro 15" retina display with usb 3. I thought that would solve my problem $3,199 later, I'm still having the same problem! What doesn't make sense to me is that if I use the Image Capture on my new mac (which is supposed to have usb 3) with the same cable and camera it detects my d800. So is it really the USB or could it be the program???
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  • Kevin Murphy
    I'm the originator of this post and I may have just come up with a solution to my problem. It seems that if your d800 has any images on the memory card when you tether, capture one pro isn't able to tether using the d800. However, if your memory card is empty, or there isn't a memory card in the camera Capture One Pro recognizes that the d800 is attached and will tether immediately! I tried this multiple times with a memory card with images and one without images and the results were consistent (memory card with images = no tether and empty or no memory card = tethered!)

    Let me know if anyone else tries this and also gets consistent results!
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  • Kwaku Alston
    I'm noticing the same thing! Did your camera also have PC flash on it, and then have a line that moves up and down? My connection is still super spotty and gets dropped though

    [quote="NN634772076017912985UL" wrote:
    I'm the originator of this post and I may have just come up with a solution to my problem. It seems that if your d800 has any images on the memory card when you tether, capture one pro isn't able to tether using the d800. However, if your memory card is empty, or there isn't a memory card in the camera Capture One Pro recognizes that the d800 is attached and will tether immediately! I tried this multiple times with a memory card with images and one without images and the results were consistent (memory card with images = no tether and empty or no memory card = tethered!)

    Let me know if anyone else tries this and also gets consistent results!
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  • NN634931978246144074UL
    I have tried this with the card without the card and three different cables on a macbook pro and a mac mini. it is not seeing it..or if it does its for a second..at my wits end with this.But my d700 works fine
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  • SFA
    Would a few observations from a non-MAc and non-Nikon person be OK?

    I have a top end Dell Windows machine with 2 USB 3 ports. They work fine with an external USB3 4Tb drive (own power supply) using the supplied "High Speed" cable. But the cable is a bit short.

    The drive has started to play up a little on write cycles so I bought a replacement in advanced of sending it off under warranty. At the same time, wishing for a longer cable , I ordered a 3mtr item. Would have preferred a 2mtr item but they were out of stock.

    The new disk with the 3mtr cable seemed to have a hard time being discovered using USB3. No such problems if plugged in to a USB2 port. Once working it's fine though I am not totally convinced that the throughput is quite what it should be.

    Because of the apparent need to replace the original drive I had both connected (via USB3) to transfer files. The old drive with the short cable had nor difficulty reading and sending data but the new one seemed slightly reluctant to respond at anything like the same speed. They are the same devices by the way.

    My conclusion so far is that USB3 can be considered a little challenging and maybe needs special attention from manufacturers to achieve its full potential. Such needs may in part explain the different responses that people are seeing from what appear to be near enough identical computer/camera combinations. They may not be quite identical. And the specification provided may be very near the boundary of works/doesn't work.



    Some thoughts, for what they are worth.


    Grant
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