I use the Pentax 24mm f/2.8 SMC-A lens. I did use the Sigma 24mm f/1.8 before I got the Pentax, but prefer the compact size of the Pentax. I used mainly manual focus with the Sigma anyway, so don't miss the AF.
Could you tell more about Sigma 24/1.8 performance (sharpness, and flare control) ? Have you used it on a full-frame SLR ?
Thanks in advance, Jerry
