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William Demeritt

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Posts posted by William Demeritt

  1. Why is $2500 more manageable than $5000? I can appreciate the desire to save some money, but the Bartech is pretty much bulletproof and will continue to earn your money back well after you've paid it off. Seriously, for the price of a Bartech and it's reliability (both as a product, and Jim backing it up), just make the investment in a Bartech (new or used).

     

    In fact, I just bought a second Bartech to rent almost exclusively.

  2. If you want to do it cheap, just go buy a car-USB charger. It accepts variable input up to (and I think above) 14.4v DC and outputs 5V regulated. Get one that say it definitely goes to 2 amps, or just says it charges and iPad.

     

    Open the sucker up, tear off the USB cover, clip the center two pins (they're data) and use the outer two pins for power. I forget which is hot and which is ground, but you can find that info online fairly easily.

     

    I did the same thing for my HD reclocking redistribution amplifier, and it works great.

  3. After they got razzed and beat down over the arm name here...

     

    They know they're quality, we know they're quality, and they've probably sold out on preorders sight unseen for the first batch of Atlas arms (much like they did the battery module 3). If the only complaints are the product name, I would hope Jack and all the folks at GPI will grin and laugh all the way to the bank.

     

    I am looking forward to getting my new Atlas arm!

  4. Like you said: if you have the long Arri sliding dovetail, keep the camera on that and put a pad on your shoulder (tape it to the bottom of the dovetail) and operate off an onboard LCD. Eyepiece location becomes irrelevant, move the camera where you need, use both eyes for the LCD, hands on the matte box or iris rods. Or, if the eyepiece isn't too far and its close to balanced, go that route.

  5. Nick,

     

    Amplifier maybe not so much, but a re-clocking distribution amplifier can be very useful with some cameras that output excessive HD-SDI jitter, like the Red MX. In my research, I found that most devices that have an active loop-through do not amplify or change the signal (reclock, etc) but simply "turn on" the output port. Analog signals benefit from an amplifier in that the strength of the signal was "increased" to allow for longer runs, but with digital, the signal can attenuate or also deteriorate in quality, or be less than quality to begin with (again, the RED MX).

     

    As is my understanding, a reclocking amplifier will take the HD-SDI signal and "recondition" it to be within SMPTE specifications, as well as amplify the signal (if only in so much as amplifying it from multiple outputs, each with 75ohm resistance instead of splitting out several BNC ports). I had considered the passive single channel splitter Lawrence was using, but it doesn't reclock or actively amplify the signal. I believe it is "passive" in so much that it draws no power to enhance the signal; without further research, I suppose it does something akin to a 75ohm T-barrel without the loss in resistance over the 2 output BNC's.

     

    Again deferring to anyone with greater engineering skill than my own, but to answer the question of "Is a distro amp necessary if you have SDI loop throughs?", if you have no problems with your current setup, I'm inclined to say no. As far as I have researched, loop throughs do not amplify your signal, but SDI signals should run a long run before attenuating or deteriorating to the point of loss.

  6. I flew the new vest. I'm sure it will come down to preference, but I know I like the my PRO vest and even the Tiffen vests that latched in 3 places. Wearing the new vest, I didn't have any revelation, as though it was something I needed and made all the difference, but some people might? Give it a fly, see for yourself!

  7. I guess there won`t be a new, lighter sled coming with the atlas, right?

     

    Jack has really been working hard to respond to operator feedback with the new equipment. I wouldn't be surprised if something appeared soon to complement this new arm.

  8. Chad's post: Posted Today, 10:18 AM

    Eric's post: Posted Today, 01:59 PM

     

    ... Lifting capacity is on par with G50 with the added bennifit of not seeing your footsteps in the shot

     

    Clocked it at 3 hours, 41 minutes. Solid performance, but not Eric's best. :lol: Of course, he's probably working while I'm catching up on Californication. :blink:

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