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Showing results for tags 'Fixtures'.
Hello Guys, I know this has been posted before but I never found a conclusion to it. I've always learnt that you can't restrike/hot-strike HMI bulbs meaning to turn them off and straight back on without blowing the bulb full-stop. Every shoot I've ever been on this has never been the case nor even close to a concern from the DP. They restrike the bulb just 30 seconds after it being shut off even when the bulb has been on for 10-15mins or so, it makes a nasty sound from the bulb trying to re-light but other than that it's fine everytime. So if someone can clarify some questions for me? The term Hot-Strike literally means from striking the bulb when it's HOT HOT, like full temperature hot, then it will blow or not restrike? Does the ballast & bulb actually have a major impact on how safe it is to restrike in reality, not theory. If the top question is true, how long is it best to wait? The higher the wattage = the more heat so the longer the wait? Cheers Guys, will appreciate this.
Hi, I come here a lot for all the great information you guys dish out! But this is my first post, It's one that has been asked before, but I'm looking for a more up to date specific answer, so any help is appreciated. I'm shooting a class room scene, in the classroom there are over head fluro lights already. Our gaffer is coming with kinos, and has said, with no real confidence, "they should work". So I've been told about needing older 40w globes rather than newer 75w, and this: "a standard fluorescent fixture they will be under driven resulting in less light output and incorrect color balance. It should be about the same as running a 4ft tube in 2ft mode in a kino fixture. When under driving the bulbs they will appear more magenta than normal. " Should I be hiring some different type of bulbs for those scenes, rather than using the standard kino blubs? Will I need to balance out the color across all the blubs with gels? Will the light be diminished (I know this may be impossible to answer without actually being on set)? Would love any help or more information before we head out onto set!