I need a light meter that will measure LUMENS. I am finding meters that show footcandles or Lux but haven't seen anything that will measure in LUMENS.
I am not exactly sure I understand the forumula for converting to Lumens or if it would be accurate to do so.
My main purpose for this would be to measure the light output of video projectors but it would be nice to use it on my flashlights as well.
When measuring Lumens, would the correct procedure be to have all of the light from the source fall within the confines of the measuring sensor. In that case the light would have to be very close to the sensor?
If anyone has a recomended meter that will do what I am looking for I would appreciate a link.
Thanks very much /ubbthreads/images/graemlins/smile.gif
Phil
I am not exactly sure I understand the forumula for converting to Lumens or if it would be accurate to do so.
My main purpose for this would be to measure the light output of video projectors but it would be nice to use it on my flashlights as well.
When measuring Lumens, would the correct procedure be to have all of the light from the source fall within the confines of the measuring sensor. In that case the light would have to be very close to the sensor?
If anyone has a recomended meter that will do what I am looking for I would appreciate a link.
Thanks very much /ubbthreads/images/graemlins/smile.gif
Phil