I had to questions about using a sto fen like cap on the front of the flash (540ez). Will this take away some light power, so that I can shoot at wider apertures up close, than I could with it off? Will it still expose completely ok? also, does angling it up 45 degrees really do anything to soften the light on peoples faces?? You see PJ's doing this all the time at say the presidential address etc. I can't belive this would do much and I guess I just need to try and see, but any advice? Thats about it.