Here are a few more things that haven't already been hit on...
Battery. This is one small pause I have about the K10 as well, but if it helps any, I have an old Yashica film camera that used a very odd mercury battery that hasn't been made in years. I found a guy who has made an adapter that lets it use modern, non-toxic batteries. I would imagine that the same thing will happen with the Pentax/Minolta battery if the cameras are still viable when the batteries go away.
Technology. I remember selling Casio QV10 cameras with 320*240 resolution for $1000. I couldn't get them fast enough. That was in 1994. Now I can buy the same features in a child's camera for $20. Literally. That said, I bet some of those QV10s still work. It's just that nobody wants to use them anymore. 20 years from now a K10 will probably work fine, but will you want to use it? Maybe in the same way I took my K1000 out for a spin this morning, as a toy, but not for the important work of recording your life.
Some things last a long time. My house was built in 1937, my car in 1973. Some things don't. My DVD player is two years old, and I'll update it with some sort of hi-def player in a few years. It will probably go at a garage sale before it's 20. But the need for a place to sleep and the roads haven't changed much in the past 50 years. Video has.
I know it sounds silly, but buy what you need for the next few years. In terms of durability, the K10 (or most other cameras) should be fine. In terms of features, we simply can't predict that so well.
I also don't know that I would buy a used DSLR. To be "a deal", any of the older cameras would have to be a lot less expensive than the new K100, and I don't know many people who will want to sell what cost them $1000 three years ago for $250 or so.
Hope that helps,
-Eric
Battery. This is one small pause I have about the K10 as well, but if it helps any, I have an old Yashica film camera that used a very odd mercury battery that hasn't been made in years. I found a guy who has made an adapter that lets it use modern, non-toxic batteries. I would imagine that the same thing will happen with the Pentax/Minolta battery if the cameras are still viable when the batteries go away.
Technology. I remember selling Casio QV10 cameras with 320*240 resolution for $1000. I couldn't get them fast enough. That was in 1994. Now I can buy the same features in a child's camera for $20. Literally. That said, I bet some of those QV10s still work. It's just that nobody wants to use them anymore. 20 years from now a K10 will probably work fine, but will you want to use it? Maybe in the same way I took my K1000 out for a spin this morning, as a toy, but not for the important work of recording your life.
Some things last a long time. My house was built in 1937, my car in 1973. Some things don't. My DVD player is two years old, and I'll update it with some sort of hi-def player in a few years. It will probably go at a garage sale before it's 20. But the need for a place to sleep and the roads haven't changed much in the past 50 years. Video has.
I know it sounds silly, but buy what you need for the next few years. In terms of durability, the K10 (or most other cameras) should be fine. In terms of features, we simply can't predict that so well.
I also don't know that I would buy a used DSLR. To be "a deal", any of the older cameras would have to be a lot less expensive than the new K100, and I don't know many people who will want to sell what cost them $1000 three years ago for $250 or so.
Hope that helps,
-Eric