Scenemaster60
Well-Known Member
Hey there all!
I recently aquired a small inventory of late 1980s Strand Century Lekolights. I have worked with these instruments in the field on and off since about 1988. They were were always touchy from a bench focus perspective and, in my field experience, they were always lamped with either the 750 EHG or 1k FEL.
Since I had a lot of experience with relamping similar vintage instruments (Altman 360Q) with the GLA series of lamps I assumed that this would work with these just as well.
That would be a fail. The GLA lamps looked like hell in these instruments. Nothing that I could do in terms of focus or lamp alighnment was helpful. The light field was spotty and uneven.
My next "try" was to see what the FLK series of lamps looked like. These experiments went less badly, but it was still hard to get a truly flat field with that lamp.
Do these instruments simply NEED a coiled lamp filament that is at least 1" long to perform well? That is what my bench focus experiments have shown me in practice. I tried benching these instruments with the following lamps:
500 EHD
575 GLA
575 FLK
750 EHG
1K FEL
The results were as follows:
Best = 1 K FEL
Good = 500 EHD, 750 EHG
OK = 575 FLK
Poor = 575 GLA
I welcome your comments.
I recently aquired a small inventory of late 1980s Strand Century Lekolights. I have worked with these instruments in the field on and off since about 1988. They were were always touchy from a bench focus perspective and, in my field experience, they were always lamped with either the 750 EHG or 1k FEL.
Since I had a lot of experience with relamping similar vintage instruments (Altman 360Q) with the GLA series of lamps I assumed that this would work with these just as well.
That would be a fail. The GLA lamps looked like hell in these instruments. Nothing that I could do in terms of focus or lamp alighnment was helpful. The light field was spotty and uneven.
My next "try" was to see what the FLK series of lamps looked like. These experiments went less badly, but it was still hard to get a truly flat field with that lamp.
Do these instruments simply NEED a coiled lamp filament that is at least 1" long to perform well? That is what my bench focus experiments have shown me in practice. I tried benching these instruments with the following lamps:
500 EHD
575 GLA
575 FLK
750 EHG
1K FEL
The results were as follows:
Best = 1 K FEL
Good = 500 EHD, 750 EHG
OK = 575 FLK
Poor = 575 GLA
I welcome your comments.