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Thread: Imagebank Optional

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    Imagebank Optional

    In response to a question on another forum I did a bit of research today.

    It seems that many of us would like to use our Hasselblad backs without having to tether them or use the Hasselblad Imagebank. The Imagebank is a very useful addition to the HxD cameras and backs. One can quickly switch batteries as needed and it can hold over 1800 39MB captures. Marc Williams has used this device extensively.

    However there may be times that one would like to power the back without the Imagebank. The following describes one way to appoach this without resorting to firing up the soldering iron.

    Hasselblad uses Firewire 800 (ie 1394b) to supply power to the backs and also transfer the digital signal from the back to the Imagebank. The power output for the 1394b standard is approximately 12v. Apple specifies 12.8 volts for FW 800. I measured 12.77 from my 12 inch G4 Powerbook FW 400 port with my Fluke voltmeter. They also specify 13v ( ? 12.77v ) for their older IPOD FW400 power supply. So it is safe to assume that most FW output will be 12.8 - 13 v and this will be safe for the Hasselblad input as one can directly power the back from any older powerbook or mac. There is some question as to whether the newer powerbook pros can supply enough power...

    Once I figured the voltage I felt reasonably comfortable to experiment with a few connections.

    My proposed solution is as follows...however this is a bit of a kludge:

    1) Belkin Firewire 400 hub - 6 ports very small and comes with a 12v 1.5 amp power adapter.

    2) 6 pin to 6 pin FW 400 cable with Granite Digital 6 - 9 pin gender changer

    or

    Granite Digital 6 to 9 pin FW cable.

    Plug the power supply to hub then 6 pin cable end to hub and 9 pin FW 800 end to Hasselblad back.

    I have done this and comfirmed that the back powers up. When it is removed from my H3DII - 39 body the menu gives alternative camera choices including shutter cable and pinhole. You can actually initiate a capture without camera from the pinhole setting by setting the exposure time on the menu.

    So AC is covered.

    Now for DC - any 12v battery that has the correct connector for the Belkin...small tip + connector should work. I mentioned that the old IPOD FW power supply which is rated at 12.8v .67amp was able to power the Hasselblad back. I would assume that this is the lowest amperage one should expect to work but probably any battery with 1.5 amp ( as specified on the Belkin power adapter ) would be a more desirable choice. So substitute the battery at the Belkin hub for the power adapter.

    Most larger battery packs come with multiple adapter tips so there should be one to work. I would caution you that many battery packs do not supply 12v but rather 15 - 22v and I would not want to fry the 20 - 30k back with the wrong battery. I have not investigated battery packs yet.

    So you can power the back and capture to the CF card for very little money...an old Apple Powerbook allows Phocus to tether and confirm focus or the above gives you DC only. Total cost for the parts including battery is somewhat high in the $500 range depending on battery chosen.

    I apologize for the rambling nature of this thread yet I hope that this helps.

    Bob

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    Re: Imagebank Optional

    Thanks for posting docmoore - I wont be trying your suggestion myself - still was interesting reading! The more I use the image bank the more I like it. I can store so many images on it from the 39 megapixel big boy 'blad it becomes almost like shooting tens of rolls of film - and not having the time to process it! LOL

    Here it is care of my 28 mm lens for anyone interested..the whole shebang ( shown here with a big boy battery - nice touch they use standard Sony video cam batteries) fits easily in the palm of my hand - I usually just stick into a pocket.

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    Re: Imagebank Optional

    Peter,

    Thank you for the picture. There is no question that the Imagebank (II) is a more elegant solution. It looks so small and the ability to change batteries quickly is wonderful.

    I think there are a few persons who would like to try out the Horseman SW II Pro or the Alpa without committing to the additional expense of an Imagebank at the beginning...it is hard to believe that they will not end up with it at some point.

    Regards,

    Bob

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    Re: Imagebank Optional

    It's smaller than I thought
    Photography is all about experimentation and without it you will never learn art.

    www.guymancusophotography.com

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    Re: Imagebank Optional

    I'm surprised as well at its size:

    http://www.bhphotovideo.com/c/produc...e_Bank_II.html

    I remember it being bigger.

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    Re: Imagebank Optional

    Ouch did not realize it was that expensive. Plus if I am not mistaken it is a separate battery from the body so you have to carry two different types and also chargers
    Photography is all about experimentation and without it you will never learn art.

    www.guymancusophotography.com

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    Re: Imagebank Optional

    Quote Originally Posted by Guy Mancuso View Post
    It's smaller than I thought
    The Image Bank-I was a lot bigger Guy.

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    Re: Imagebank Optional

    Quote Originally Posted by Guy Mancuso View Post
    Ouch did not realize it was that expensive. Plus if I am not mistaken it is a separate battery from the body so you have to carry two different types and also chargers
    However, it's the same battery and charger as the CFV and CFV-II or any Hasselblad CF digital back. When used with these backs, there's no need to use a battery on the back itself.

    When you use the Image Bank with a H camera , it takes over powering the back, so the grip battery only has to power the camera and lasts forever and ever : -)

    One thing a lot of people don't know is that each H camera also comes with a grip that takes conventional batteries ... so if needed, no charger is required at all to run the camera. Nice back-up thought.

  9. #9
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    Re: Imagebank Optional

    That is a nice backup thought
    Photography is all about experimentation and without it you will never learn art.

    www.guymancusophotography.com

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    Re: Imagebank Optional

    Quote Originally Posted by fotografz View Post
    One thing a lot of people don't know is that each H camera also comes with a grip that takes conventional batteries ... so if needed, no charger is required at all to run the camera. Nice back-up thought.
    Takes three disposable CR123a type batteries.

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