Originally posted by fwbigd Both charts on the website is for the Nikon D300s. If you take a look at the chart published in the magazine you would see that the K-7 is a real dog when it comes to low light auto focus speed. Almost a full second slower than the D300s.
What lens are they using? I haven't made any measurements, but I know for a fact that with the DA 40mm and DA 70mm, the auto-focus in low light is fast enough that I don't need to consider it as an issue, even with moving kids. (Or cats.) Maybe it's just a matter of "even slow is good enough" — or maybe it's just not as awful as reported in real use.
Where the AF sucks, though, is tracking objects moving rapidly towards or away from the camera. No way it can keep up with a kid on a swing, for example — something my friend's Canon 40D does handily.