Between 35, 28, and 24, I'd opt for the 28 for street photography. 35 is rather close to 50. Faces aren't distorted if you keep a fair distance and the face isn't near the edge of the frame. To fill the frame with a face, you'd have to get a little over half the distance of the 50mm, and you'll get plenty of distortion. If you want the subject and his environment, a 24 or 28 will do fine. National Geographic often has photos with wide lenses. My ready-to-go Nikon outfit has a 20, 50, 105, and 200. Such a large jump between focal lengths isn't too restrictive to one who does his own B&W darkroom work. My Leica rangefinder system is 20, 35, 50, 90, and 135. It was fine for transparancies that would receive no cropping. For a few dollars you can get a cheap 28mm and see if it is the right focal length before spending money on a good lens. Then, when you've got a quality WA, the cheap 28 is handy as a magnifying lens.