Originally posted by 24X36NOW Couldn't have said it better myself. One of the biggest reasons Pentax has any market share left to speak of is its backwards compatibility. Absent that, why buy Pentax? Lens availability is what SLR cameras are all about, and the best current lenses are often either not made in, or are made but forever "out of stock" in, PK mount. If I didn't have a collection of existing PK lenses, I would definitely buy a Nikon or (shudder) Canon product, because then I would be able to get the full array of lenses I wanted. That's also why Pentax needs to get their full frame cameras out - the faithful are growing impatient!
I find it interesting that you and I agree on a number of fundamental points and reach entirely disparate conclusions from them. Lens availability *is* what SLR cameras are about. You seem to think that, absent a backlog of incredible glass (a point I'd not likely challenge; the old glass is terrific), Pentax has no lens options worth choosing the system for and thus the old glass is the only reason to own a Pentax camera. I, on the other hand, think that they have far and away the best selection of lenses available for a cropped-format camera. We can go back and forth about the disadvantages of the cropped format, and given your username I'll take the liberty of predicting your feelings on the matter. I'll add that I agree with many of the points made in favor of a 36x24 sensor, not the least of which being that I "know" those focal lengths intrinsically. But the fact of the matter is that almost every DSLR sold in the world has a smaller-than-36x24 sensor, and no one is going to buck that trend in the next three to five years, minimum.
Granting that, Pentax currently offers the most complete lens lineup available for such a sensor. Certainly they're lacking the longer lenses of the Canon and Nikon lineups, topping out at 300 currently. But with primes at 14, 21, and soon 15, they offer more in the way of wide angle primes. They have not one, but two zooms available that go as wide as 16mm. They have a popular lineup of small primes unlike anything available from any other manufacturer. They'll soon have fast (and large) normal and portrait lenses roughly equivalent to a 50 and 85 in the 30 and 55mm DA* primes. Whatever you want, Pentax seems to have it, as long a you're fine with a maximum focal length equivalent to a 450mm lens and a minimum of 21mm on a "Full Frame" camera (excluding fisheyes). Soon zooms will bring this range to 16-450mm.
What Pentax doesn't currently offer is a comprehensive selection of glass that covers the image circle of a 36x24mm sensor. In fact, all but (by my count) 6 such lenses have been discontinued. Pentax certainly has a backlog of old glass that could be brought back into production, but there's a justifiable question of how quickly this could happen. Added to that, there's a question of how excited new consumers would be about decade-old lens designs.
It's all about gaining marketshare, to be sure. Currently, Pentax offers the most comprehensive selection of glass for smaller sensor cameras, which are the cameras most people will be buying for the next half-decade. These are all new designs, and many are head-and-shoulders above the aging glass offered by Canon, Nikon, and the rest. It seems to me that the way to gain marketshare is to make this lineup even better and promote it to no end, along with even better bodies with smaller sensors. A Full-frame camera should certainly be forthcoming, but introducing it, in my opinion, should wait until Pentax actually has glass to sell with it and the market is ready for larger sensors to be more mainstream. After all, you can't improve marketshare if "wealthy-ish owners of several old Pentax lenses" is your target market.
Just my take on it.
Will