I received some excellent input on lighting for architectural photography in an earlier post.
That said, can someone tell me about Norman P4000 power packs? This is "P4000", not P4000D, or some other designation. I'm pretty sure these are 4000 watt-sec ond packs, but they're lighter and about the same size when compared to current P2000D packs, and this seems quizzical. Why would this be? They have options o f 2000, 1600, 1200, 800, 400, and 200 watt-seconds, and combinations thereof. H ave standards changed, and have power packs have gotten heavier? Given their si ze, weight, and power, they look like excellent packs for architectural purposes .
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