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  1. #11

    Join Date
    Aug 2009
    Location
    Reykjavík, Iceland
    Shooter
    Medium Format
    Posts
    19
    Thanks for the help Bob -- that advice is very useful.

  2. #12

    Join Date
    Jul 2007
    Location
    London, England
    Shooter
    35mm
    Posts
    118
    I too found that the 150 watt bulbs are a lot more expensive than the 300w. Then I looked inside the head and found a warning tab "Use only 300 watt bulbs". Inside my other head, same notice. Don't want to risk blowing the electronics - I have had one head conk out on me and pronounced unrepairable, so I think I need an ND filter.
    I am not an electronics expert - can anyone comment as to whether a 150w bulb would endanger the circuit whilst 300w is safe? It occurs to me that if 150w is a problem, then the bulb blowing as it will one day must be even more of a threat to the electronics.
    Richard

  3. #13

    Join Date
    Jul 2007
    Location
    London, England
    Shooter
    35mm
    Posts
    118
    Sorry, it was the 500s transformer etc unit that failed, not the head.
    Richard

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