I said, in my previous note: "And do you think that would work well with a Pentax K10D body? Would I need an adaptor?" I currently am looking for a lens that will replace my Tamron macro-zoom of 60-300 mm and work with this digital camera.
I was talking about someone else's mention of: "I use a Sigma 18-300mm lens. I love it. It is available new for $399."

And do you think that would work well with a Pentax K10D body? Would I need an adaptor?
I had been thinking of sending this in for repairs (warranty long gone), but kind of lost faith that Tamron knew what it was talking about re: the places that would repair their lenses because they only named 3 in this whole city and one went out of business 5-10 years ago and the other quit repairing any lenses about the same time (!! good job keeping tabs, Tamron!).

I did try it with a different body: the analog Pentax was still working at that time. It worked with the lens at first, even after the lens was getting hinky with the digital Pentax, but then the analog jammed up and soon the lens quit working with the digital camera altogether. At that point, I could no longer compare and see if it might still work on the analog, or would have quit working there, too.
That lens did everything I wanted it to do: zoom and macro shots were great.

No, this is a macro/zoom, both in one lens. That is what made it so fantastic.

I had been using it steadily, 10 or so shots a week on the analog, then the digital. Then it got iffy on the digital, sometimes working, sometimes not, petering out over a few months to not working at all. It still worked for a few more weeks on the analog, but then it jammed one day (all black in the viewfinder, nothing moved when the button was pressed). So I figured I could not tell if it was the lens somehow falling out of compatibility (??) or the digital camera doing ditto, or the lens just croaking, if they can croak. I will check with Tamron and see about getting it a physical.

The lens that I used, the macro-zoom, is a Tamron SP lens (I had to use an adaptor to fit it to my analog camera) and it has "60-300mm" on the barrel.

I have a Pentax K10D DSLR. I used to have a Pentax analog camera and it had a zoom/macro lens that was great for everyting I did. From what I read ahead of time, this K10D would be able to use that favorite lens... but it only worked for a little while, maybe 50 shots. So, is there an equivalent lens that actually WILL work on the K10D? A zoom/macro lens?

OK, last word on this Wasabi battery: I did the remove/reinsert, remove etc for about 45 minutes and that had no effect. Ditto with cleaning the contacts. Then I did the leve it charge for 24-48 hours and, at first, i thought it was working: At 24 hrs., I took it out because my camera said it was charged, and I tried it only to find that there was power enough to operate the flash and review previous shots on the chip but it would not tkae new shots-- did the flash, did the expected clicking sounds and there was no new shot on the chip. I put it back in the charger for another 24 hrs and took it out without checking it, let it sit a day and the camera says it has no charge (hey, where did that charge go??) so I am done with it. Recycling time for it.

Oh, urk, more exploding batteries. If just trying to charge it can make it go ballistic, perhaps I should just ashcan it.

Yes, the battery is several years old and has sat around for long periods. I didn't know they could leak their charge away, thanks. OK on the extended time: I have set it up to go for a day or two. I do have "rubbing alcohol", but it is 91%, so I am guessing it is OK to use?

Yuk yuk. Stopped me just in time.

My camera does not tell me percentages of charge. More of a "Yes", "No" in answer to the question "Is there power in this battery?"

Ah, I wondered what the method that could make them explode consisted of-- I bet this is it, huh? Thanks for the tip and the cautions.

This is a lithium-ion one, but with the several suggestions, I now have several things to try: rubbing the contacts with rubbing alcohol, and your suggestion of the in-and-out of the charger method. I have already tried the long-period attempt to charge it, leaving it in there for 6 hrs and having it still tell me it was dead. Someone said that they have some sort of built-in "thing" that keeps them from being totally depleted. Hope so, as how can I prevent that when my camera only tells me "it has a charge" or "it has no charge"? Thanks for the new method.

Yes, but first I want to get that reply about rubbing alcohol.