H3DII-50 & Macbook pro 17,15" tethering problem

[ali alriffai]

Hi,
I'm trying to tether my H3DII-50 with my laptop in location where there is no power connection & it tether with no problems, but after minutes the connection drops. After googling I found that there is an issues with many photographers around that the new MBP (unibody) cannot power the back & here is something from hasselblad support:

Q:Do all Hasselblad (FireWire) Digital Backs require at least 10 watts input?


Yes, all Hasselblad FireWire powered backs require 10 watts of input power.
We do realize that some portable computers speck their FireWire port output at 8 watts and that this would potentially pose a problem in using them with Hasselblad digital cameras and backs. We have seen our backs working successfully with such computers in spite of the lower rating, but in general, would recommend the use of a powered FireWire hub, such as the one available under item number 2380 from http://www.granitedigital.com/ for such application.


Anyone here experience this issue ?

what is best solution where there is no electrical source in location?

Thanks
Ali

[jing q]

Hi,
I'm trying to tether my H3DII-50 with my laptop in location where there is no power connection & it tether with no problems, but after minutes the connection drops. After googling I found that there is an issues with many photographers around that the new MBP (unibody) cannot power the back & here is something from hasselblad support:

Q:Do all Hasselblad (FireWire) Digital Backs require at least 10 watts input?


Yes, all Hasselblad FireWire powered backs require 10 watts of input power.
We do realize that some portable computers speck their FireWire port output at 8 watts and that this would potentially pose a problem in using them with Hasselblad digital cameras and backs. We have seen our backs working successfully with such computers in spite of the lower rating, but in general, would recommend the use of a powered FireWire hub, such as the one available under item number 2380 from http://www.granitedigital.com/ for such application.


Anyone here experience this issue ?

what is best solution where there is no electrical source in location?

Thanks
Ali

you considered getting a firewire expresscard and then hooking in the power with a portable power solution? http://www.xpalpower.com/

I guess it does the same thing as a firewire hub but it's less wires and more compact.

added benefit is that the firewire power is supplied from the battery so you can run your computer longer.

[Frank Doorhof]

Hi,
I have very good experiences with the AppleJuicz from peartree.
It's an external battery that powers my macbook pro for a long time, the notebook thinks it's on a poweroutlet so you have full power on firewire and full brightness.
With everything on full power (fast videocard/wifi/BT etc.) and my leaf aptus connected it runs for app 5 hours before it switches to the battery of the laptop self.
When I change videocard and disable wifi/BT it runs ALOT longer.

It's not cheap but it's a wonderful solution when working on location.
Normally your notebook will stop capturing 100% correct when the powergauge drops below 70% although some claim to run the battery down to 20-30% before errors occur, for me it's most of the time till the gauge hits 70%.

With the apple juicze I just don't think about it anymore and just shoot.