Seeing the Sigma 18-50 f/2.8 on sale for Black Friday at a couple of places. I have the a6400 with the 16-50 kit lens, and the 70-350 which is on the camera 90% of the time for birds at the beach. The kit lens is just... fine. Is the Sigma a REAL step up for sunsets and the grandkids indoors, or am I being sold something? I normally only buy used from KEH so buying new is a big step for me.
Steve