Edited by Capt.Video, 13 May 2006 - 01:47 AM.
HMI's vs Arcs
Posted 13 May 2006 - 01:45 AM
Posted 13 May 2006 - 03:16 AM
They are known as a somewhat "purer" light (whatever that means). They are far from flicker free at any speed, as they are a flame, so its flicker, just not the type were used to.
Most of the flicker is in the edges of the beam, which are blocked in the light.
I would say they are extremely far from viable as a starter light - They require a lot of power (usually DC, although they have transformers for them), require constant attention while they run to trim or change the arcs. They make lots of smoke while they run, and as was said you need to know how to use them.
They are about the size of a Silver Bullet (12k HMI fresnel), and have about the same output.
Posted 13 May 2006 - 04:35 AM
Posted 13 May 2006 - 06:52 AM
I heard that there are only a handful of people in the UK with the required licence to run Arc lamps. Don't know how much truth is there.
David Watkin and Vittorio Storaro swear by these older lamps, Watkin continually gave the HMI quite a pounding when discussing the matter. In one of the old guild magazines he wrote in and went off on one about how HMIs are not dependable, the bulbs break and the look isn't consistent. This letter is published at the end of his autobiography.
It's funny because many of Watkin and Storaro's contemporaries like Fraker and also the late Arthur Ibbetson (arguably more conservative in their approaches), who used Arc lamps as frequently and as effectively as they had done, didn't think twice about turning to HMI light. Douglas Slocombe, a hard light enthusiast, was quite open to them too in his final decade of cinematography (although I believe it was soured by a bad location experience).
Posted 13 May 2006 - 10:48 AM
Posted 27 May 2006 - 04:33 AM
Guilaume Schiffman (hi, Guillaume, if you ever come by !) could not use Arcs on OSS 117 because they are not allowed in France.