fitting condanser

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im new in this forum and i want to learn some measurment of elements for taking good quality of resolutin lcd projekt.first thing to know that condanser.i used 250 watt hqi metal halide and i know the reflector i will put that 1mm above the lamp .but after the lamp i dont know the measurment of fitting condansör mm?.than where can i put my first frensel in mm?

explanation of equipment :

Condanser 76mm

Condensatrice Izzotek : focale 130 mm / diamétre 76mm

Fresnels : 240 x 180 x 4mm

than there is a method of measurment of this equipment distance for puting original place.

thank you very much
 
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