Originally posted by redpit I don't believe that Pentax won't bother develop and offer some serious fast tele or super tele lenses just because it has a small share as a photographic brand. That also means it's not a real option for the pro photographers and... would stay with its small market share. How do you want to grow your users base when no pro lens offerings exist to compete with the big players? Most of the K-1 reviews included the comment that there are not many contemporary FF lenses in Pentax arsenal as a con. Moreover when you have a tool like the K-1 and the following FFs that shine it's a pitty not to have the lenses to reveal the cameras' potential.
I know that Pentax market share was greater at that time but I would love to know how many of those 600/4, 400/2.8 and 250-600/5.6 pro lenses were sold during their production years. My guess is that a new DFA 600/4 for example would eventually find its way to many of the old FA users and it will attract more sales from some of the newer K-1 owners while definitely will attract much attention making a clear statement about how serious Ricoh is when it says that has plans of making Pentax brand glorious again.
Besides wildlife photographers, who needs these long, fast lenses? Wouldn't those photographers be dissatisfied with
Pentax's AF performance if the old FA glass, and the DA* 200, 300 and DFA 150-450 aren't enough? Maybe it'd be smarter to bring out some first-party, weathersealed tilt-shift lens for architecture, or some other niche that's completely neglected and relatively easily served.