Mini High-Bay Fixture Lit

This is a shot with the 90W incandescent to the right and the F40 turret in the background shut unpowered, only the 23W CFL in the highbay. I also tried a 150W incandescent since its light output it comparable to a 35W HPS.

It's really cool that a regular coated A19 lamp provides a pretty well-lit area and even light cast but a short-necked 40W clear fan lamp provides a tighter beam and a very defined circle of light (at about 7ft up, the circle of light was pretty much the length of the garage, maybe a little over 20 feet).

A shorter lamp creates a tighter beam while a longer lamp makes a broader beam because the filament is lower or higher in the reflector with a shorter or longer lamp.