I am confused about the various bulb applications regarding flashlights and bike headlights using standard batteries.
If you take a two cell DD flashlight and swapped out the bulb which would be the brightest? Incandescent--Krypton--led or halogen.
I want to upgrade the bulb in my vintage headlight. There are krypton bulbs with screw bases which would make life easier than a socket conversion. I wonder if they are any brighter than the standard PR2 bulb? Any ideas?