diferences about reflection slot and reflection amount

hello guys
sorry bu this question, but the point is that i always make my reflective materials using for the amout of white . Then, i am very curious to know if there is some diferences betwen the first kind of reflection and the second one ( using a map at reflection slot)

thanks in advance

silver

Not really any difference except that you can control the location as well as the strength of the reflection with the map slot, for instance if you used a noise map the reflection would be stronger in the white areas and less in the grey areas.

gosh rerender… it was so clear and i couldnt see!!! of course, is the same thouths than amount of bright, a map with had more white colors will reflect more. So, this was the reason becaus i couldnt get good reflections using maps at slots, because i put there colors maps, not Black and white…
really thanks to clarify my mind

silver