Honestly this thread made me realize how much of a noob in lights i am.
I have a handful of mag lights some ebay specials and different homedepot lanterns but this is out of this world.
Appreciate the good words.
Keep up all the good work you do on your projects. :naughty:
I've been very busy making three searchlights of very different designs during the last year and have learned much. :thumbsup:Mainly I learned from experience and experimenting with many designs and focal lengths and discovered the brightness and visibility of the beam from any large distance ultimately depends on the lumen output of the light source, amount landing on reflector and or lens and the focal length, preferring the longer focal lengths. Even when I grab most of the light from a bulb and place it in a highly focused beam using precision lenses I purchased, and aligned with mirrors, making an almost laser like beam compared to the slighter fatter beam from homemade parabolic reflecting mirror; grabbing less than half the total light from a brighter source, (similar to the highly successful WWII carbon arc design) and with a longer focal length, beam could be seen from a much farther distance.
:candle: Today's automobile headlamps are significantly brighter and many drive with their high beams on, only the brightest of searchlights will be seen, even close to the source. :sick2: My lights are often much brighter than Xenon sources twice the wattage as my HMI sources which produce much more light per watt yet from a slighter larger arc length, making a culminated beam harder to achieve.
Fun making my own stuff from scratch so I can almost instantly see my own customized results.:thumbsup: