Hello,
Sorry that my first post here is a question. I have an idea for lighting using No1 and No2 photofloods, I was looking into a classic "Series Parallel" switch (but remotely controlled with a relay) and then I realised that I can get a really rather good DMX controllable dimmer pack with four channels for about £80, which is far better for my purpose.
Google has not been kind to my search for a photoflood data sheet. What I would love to find out is how long a 230/240v photoflood will last when driven at 50% of it's capacity (so say 120V or a chopped PWM of 50%). I tried GE and Phillips but with no luck .. Does anyone else have any information they could let me have.
Justin
I prefer paper chinas to nylon myself. Have a look at filmtools.com, they sell a pretty cool china holder where the globe and the ball are held in place - vs. a swaying, hot globe on a wire bumping the paper. They take proprietary balls, but if you don't mind a few extra bucks and an initial investment, they're pretty cool.
If your concern is constant exposure from frame to frame (for stop motion) - you'd want to do some tests. DMX may dim in a way that's noticeable from frame to frame, esp. if you're using a shutter speed faster than mains power (1/60th US, 50th UK). If this is digital, you may find one of the time lapse flicker plugins will even things out.
I've never done that kind of work, but when I've played with time lapse on my DSLR, I at least learned to do the unlocked-lens thing to maintain a constant aperture! I was amazed how much flicker you got just from inaccurate aperture closing.
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