This is one of my recent photos. I'm going back to my roots (My roots being a Pentax K1000 analog camera although this is shot on a Pentax K20D) trying to nail black and white photography. The conversion was done in Lightroom 4.
For the shot I used a beauty dish right next to, and a bit above, the camera, and a softbox to the camera left. I also have a light hanging from the ceiling, pointing towards the background.
ISO 100, 1/180 sec at f/8 26.25mm (Pentax 18-55mm f/3.5-5.6 AL II)
If (or when, as they are friends of mine) I do this again, I'd move their arms a bit, and perhaps also bring in a makeup artist/stylist.
At another forum, people told me the photo is to dark, so I've added a lighter version of it. I would like to hear your option on the dark vs light, and if there are anything I should do differently with lights, pose, and conversion. (Huge order, so you don't have to answer everything!)