If you guys were shooting portraits with a Pentax 50mm 1.4 lens, what type of setting would you typically go for? I am trying to get good rich colors, and have some difficulty doing so. I use an Alien Bee 800 as my primary source of lighting, and I typically go with f/2.8 to 3.5 and a shutter speed of 1/180. I typically have the light set between 1/8 to 1/4 power depending on the ambient light to get a balanced exposure. Is it solely in the lighting that brings out rich and true colors? I also have a Sigma 70-200mm 2.8 lens that I could also use. Which would be better for portraits? I had always read to use a prime lens for portraits, but read an article today about using a zoom to soften the features a bit by increasing the distance between the subject and camera. Thanks, Any comments would be helpful.