Speakerplans.com Homepage
Forum Home Forum Home > Other Chat > Lighting Talk
  New Posts New Posts RSS Feed - UV gels
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

UV gels

 Post Reply Post Reply Page  <123
Author
Message
csg View Drop Down
Old Croc
Old Croc


Joined: 17 September 2007
Location: bedford
Status: Offline
Points: 6085
Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 26 December 2009 at 9:19pm
Originally posted by james folkes james folkes wrote:

oh well done, that is indeed they. hmi lamp i see, certainly explains why it was bright. i can't remember off the top off my head but hygrarium medium-arc-length iodide - as i once learnt hmi stands for - has one of the highest lumen outputs for watts input of any discharge lighting. hygrarium being the old school name for mercury, so it's basically a hard-line mercury vapour lamp and similar to those used for moonlight shooting in the movie industry. i have played with a 6kw hmi working on a film and it was impressively bright, i remember doing the maths and working out it was equivalent to about 36,000 watts of tungsten incandescent lighting. 

arri, the german company responsible for the unit, also make this rather pleasing 18 kw device, so that's something like the light output of 108,000 watts of conventional tungsten lighting from one bulb. mental...

james.
 
Here you go James, this is my team of electricians using several arri 18k hmi fresnels used to create the moonlight shafts for the RSC / BBC production of hamlet which was on TV this afternoon - back in june
they are used for far more than just moonlight - being 5600 - 6000 kelvin light temperature, the colour of north sunlight, they are used extensively for daylight balanced filming inside and out.
 
fine bits of kit, one of these with a woods glass lens would be a mental uv source!
 


Back to Top
Sinfinity View Drop Down
Old Croc
Old Croc
Avatar

Joined: 06 July 2008
Status: Offline
Points: 1632
Post Options Post Options   Thanks (0) Thanks(0)   Quote Sinfinity Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2009 at 7:25am
Chris, what where the gelled par cans for? Just to warm the shot up a bit or something else?
Matt at ukamp dot co dot uk
Back to Top
csg View Drop Down
Old Croc
Old Croc


Joined: 17 September 2007
Location: bedford
Status: Offline
Points: 6085
Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2009 at 10:43am
those and if you look carefully the atomic strobe were used to simulate firework bursts in one of the earlier scenes
we also had several 5kw halogen fresnels and 2 more atomics inside for doing the same thing
Back to Top
Sinfinity View Drop Down
Old Croc
Old Croc
Avatar

Joined: 06 July 2008
Status: Offline
Points: 1632
Post Options Post Options   Thanks (0) Thanks(0)   Quote Sinfinity Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2009 at 11:11am
A thousand and one uses for a strobe Smile

Thanks for the information.

Cheers
Matt

Matt at ukamp dot co dot uk
Back to Top
james folkes View Drop Down
Old Croc
Old Croc


Joined: 08 January 2005
Location: United Kingdom
Status: Offline
Points: 3064
Post Options Post Options   Thanks (0) Thanks(0)   Quote james folkes Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2009 at 11:15am
aye, that is they. proper kit, beautiful things aren't they! very light for quite how large they are too. i quite enjoyed my little job as a best boy, but i wasn't quite up for slavishly devoting myself in the manner required to break into the industry. shame really, it was right up my street.

james.
mardy hippy.
Back to Top
 Post Reply Post Reply Page  <123

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.08
Copyright ©2001-2026 Web Wiz Ltd.