So I'm the proud owner of a beautiful Bronica camera 645 ETRS! So far, it's quite a beast of a beauty! My photography is documentary in style and so I'm usually "outside looking in" and not doing too many posed portraits. I'm currently using a Pentax MZ-5 with a 50mm lens as my "meter" for now. So far, it seems to be doing okay, but I'm wondering if I really need to upgrade to one of the awesome Sekonic light meters? Given that I don't think I'll be wanting to place a white dome in front of a wedding couple while they're saying their vows, I figure something with a spot meter would be beneficial?