(similar to this one http://eventtechnike...eum/ARRIalt.jpg )
The one I tried (1 kW) had a noticeably worse light qualitiy than the modern fresnels:
- uneven field of light with some very light circles visible in the projected light (looked as if it projected the fresnel lens pattern, esp. towards the edges
- a slighly darker patch growing in the center when flooding the thing
- quite some diffuse light spill from the front lens (probably because it is slightly roughened up at its lamp-facing side)
- spill, spill, spill from the top&bottom ventilation cuts... this seems to be due to the design: there is some metal to shield most of the light, but no real light trap as in newer fresnels
Also I feel that the beam is not as defined as with newer fixtures.
Is this puppy just misaligned or were the lights in general not that good back then?
Edited by Marc Roessler, 19 April 2009 - 03:01 PM.