Originally posted by cali92rs
They still sell lenses with SDM.
Yes, they were designed before Ricoh, but I am sure Ricoh collects the check.
Statistically speaking, SDM is fine and is reliable or unreliable as any other lens type motor from other manufacturers.
Another problem is amplification and inflation of the problem beyond scale during the last several years, by Pentax users in online forums.
For that matter, a small brand like Pentax should invest time in taking an other approach, and deliver technology with updated specs, and a name. Coincidentally, the transition overlaps with transition to the new coating technology, and will be done at once.