Sigma 30mm F1.4 Art DC HSM Lens for Pentax

This is a great budget portrait lens for APS-C. It's sharp and affordable, but the auto-focus is hit or miss and chromatic abberations are noticed in high-contrast situations and I couldn't easily remove it.For Pentax you're better off saving for the 35/1.4 ART, that's a must own lens.

This lens is very well made, heavy, handy, and good looking. HSM focusing is fast and very quiet. Compare to the Pentax Limited lenses I have, this lens has better focusing ability. For the price, this lens is the best choice to me. I think this will be a good choice for everday carry lens. The reason why I give 4 stars is purple noise. Purple noise in the middle can be elminated by adjusting aperture to f/4(low ligth) or f/6(sunny day). Near edge purple noise is diffcult to elminate, also green noise appears. The camera I use is Pentax K3ii. My conclusion is this lens does great on objects and portrait, but not good at landscape shooting. Of course, It is impossible there is a lens can do every thing. Overall I love this lens.