A general question about the iris settings (for a PD150)

I have shot a couple of dance gigs, and when lights get up very bright and i tighten up the aperture I sometimes find that image has an almost hazie appearance.

I recently found a post where a guy said he likes to shoot with the aperature around f4, so he puts a couple of ND filters.

So, would I get better image quality if, rather than shooting at f8.*, put on the ND filters and shoot with a wider aperture.

All thoughts and experience greatly appreciated.

Thanks,

marks

IMExperience with 150/170/250,the sweet spot is around f/4 to f/5.6 so you might find that your find your friend is correct. Throw the ND on and try to keep the iris around those numbers