The difference is hard to describe in words and not easy to describe in pictures either. The best way to understand yourself is to see the difference in person.
"Floody" looks like a regular flashlight beam being shined through frosted glass. If you have frosted tape, or a flat piece of opaque plastic, you can simulate the effect by shining a regular flashlight through the frosted material.
"Flood" looks like light from a bare bulb. If you can remove the reflector from one of your lights, you can simulate the effect of a "flood" light by talking off the reflector and using the bare bulb.
Thanks YoSeKI. I just try to experience with my 3D Maglite LED. It is the only light I can access to easily remove the reflector. Very interesting. No focus center, which make it appear less bright but big even coverage area.
What is advantage of adding a frost coating in the front? wouldn't the frost coat will take even more brightness out? Is it the reason why flood light without reflector never equipped with frost front due to following 2 reasons.
1) there is no need to, cuz LED without reflector is already evenly spread out 2) it will take more brightness out. Which the two reasons are double "no, no".
Frost lens only apply to LED with reflector. for two reasons. 1) try to mimic true flood light 2) try to gain a bit throw while maintain flood quality (which is floody).
Am I on the right track understand Flood/Floody?
Which made me raise another question while I was reading H502 30pg thread. My impression, a lot of ppl want close range prefer flood over floody. Which appear H501/H502 are popular over H31F/H51F. Some responded in close range working, reading condition, they feel they can stare Flood type light over Floody. Why is that? What make Flood light advantage over Floody? Appear from my understanding, Floody light should have more advantage. In close, with help of reflector bring light brighter while diffused. in distance, floody gain slight throw. Some responded Floody type lights are no good in throw and no a good close range. Which confused me a little bit. I would think ppl prefer floody over all....good in both world.