Donald Riley Posted July 18, 2010 Share Posted July 18, 2010 Why is there a huge price difference between HMI lights and bulbs that burn at 5200 Kelvin? Link to comment Share on other sites More sharing options...
Premium Member Adrian Sierkowski Posted July 18, 2010 Premium Member Share Posted July 18, 2010 HMIs are in lower demand and a lot more complicated to build and filled with rare elements and also last for longer than 4 hours (as a photoflood does). Among other reasons. Here's an idea of how much more complicated an HMI bulb is : http://en.wikipedia.org/wiki/Hydrargyrum_medium-arc_iodide Link to comment Share on other sites More sharing options...
Brian Drysdale Posted July 18, 2010 Share Posted July 18, 2010 (edited) HMIs are often a much larger wattage if you're talking about the small metal halide 5200 bulbs that you can buy for domestic or industrial use. Edited July 18, 2010 by Brian Drysdale Link to comment Share on other sites More sharing options...
Donald Riley Posted July 20, 2010 Author Share Posted July 20, 2010 Would something like this make as good of picture as an HMI light? Link to comment Share on other sites More sharing options...
Premium Member Adrian Sierkowski Posted July 20, 2010 Premium Member Share Posted July 20, 2010 It'd make an image nowhere near an HMI light..... HMIs are point sources, like the sun, normally in fresnel lighting instruments, but also PARs-- point being they are a strong and controllable beam with a good throw on it which one can later modulate. A Floro fixture, such as that or a Kino, while it can by 5600K or so is by default a soft-ish light with very little throw, though with the low power consumption quite useful very often. Link to comment Share on other sites More sharing options...
JD Hartman Posted July 20, 2010 Share Posted July 20, 2010 Spiral compact flouro bulbs (Falcon Eye, others..) typically have a low CRI. If you want something that can compete with an HMI, these come close: http://bmlighting.com/site/products/mac-tech-hpl/mac-tech-hpl-12-mini-dino/ Link to comment Share on other sites More sharing options...
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