Portrait settings

[docfav]

I just got a little studio setup to do portraits and was wondering what people use for an f-stop setting. I have 2 lens that I use. A nifty-fifty and a Sigma 24-70 f/2.8. Should I be using the nifty and set f-stop to around 2.8 or the Sigma and use f/4?

I would like the background to be blurred as I just have some black or white felt as background right now with flash and gels to give it some color.

Any help would be great.

Doc

[breathless]

The settings of the camera and choice of focal length would depend on the DOF/perspective you wish to achieve and studio space dimensions.

[docfav]

I'm going to have to play more with it I think. I understand what you're saying.

Doc