Pentax Pentax HD Pentax-D FA 24-70mm f/2.8ED SDM WR Lens Review

The Pentax D FA 24-70mm f/2.8 is a lens that makes a promise with its specs and mostly keeps it. Its optical performance is the star, landing in the 93rd percentile, which means it's sharper than almost everything else out there. You get a constant f/2.8 aperture across a classic full-frame zoom range, wrapped in a hefty 785-gram package. But the numbers also tell a story of compromise, with autofocus and build quality percentiles that lag behind its optical brilliance.

Let's talk about what this lens does well. That 93rd percentile optical score is no joke. With three aspherical and three ED elements, it's built to be sharp corner-to-corner, and it delivers. The bokeh is decent, sitting around the 59th percentile, so backgrounds are smooth but not necessarily creamy. Where it stumbles is in the handling. The autofocus is in the 47th percentile, so it's competent but not fast or silent. And there's no stabilization at all, which is a big miss for a modern pro zoom, putting it in the bottom 40% for that feature.

At $1197, this lens asks a lot. You're paying a premium for that exceptional Pentax glass and the K-mount ecosystem. Compared to similar f/2.8 zooms from other brands, the price is competitive on paper. But the value equation gets tricky when you consider what's missing, namely stabilization and top-tier autofocus, which are standard on many rivals at this price. It's a great lens optically, but you're not getting the complete modern feature set for your money.

This lens lives in a tough neighborhood. Compared to a Sony or Nikon 24-70mm f/2.8, you get similar optical brilliance (often in the same 90+ percentile range) but you give up advanced autofocus systems and built-in stabilization, which are huge for video and low-light handheld shots. Even looking at third-party options like Sigma's Art series for other mounts, you often get better build quality scores and faster AF for similar money. For Pentax shooters, it's the only native f/2.8 standard zoom game in town, which is its biggest advantage and its biggest limitation.

Here's the deal. If you're a dedicated Pentax full-frame shooter who needs a sharp, reliable 24-70mm f/2.8 and you don't mind slower AF or using a tripod for slower shutter speeds, this lens is a no-brainer. The image quality is fantastic. But for anyone considering a system, or for Pentax users who shoot a lot of video or action, the missing features are hard to ignore. It's a brilliant piece of glass in a package that feels a generation behind.