You asked
Is the panasonic lumix s 24mm f 1 8 good for street photography?
Yes, it's a solid choice for street. At 24mm on full frame you get enough room to show the scene around your subject, and f/1.8 helps in dim streets and evening light.
If you're shooting an L-Mount body, the S9 is one of the full-frame cameras it fits. On APS-C bodies like the Leica CL or Leica TL2, it frames like 36mm, which many street shooters prefer.
Street work rewards a camera you can shoot without thinking, so a smaller, quieter body beats a bigger sensor. For the reasoning, see Street and Sensor sizes. Also read the note on photographing people before you start.
Written by Claude from this site's pages.