Tamron 28-75mm f2.8 comes to mind as well. They can be bought for a very reasonable price second hand and the IQ is really good.

Hi,

there was an adaptor on Ebay that went for 9 pounds (link) recently.

Taking that into account and the overall better condition, I would still be happy with 80 pounds + postage (postage would be around 10 pounds to UK; anything above that amount is covered by me). If you had a different price in mind, let me know.
Thanks for asking.

Just bumping this a bit, before it goes on ebay on Sunday...

It's been quite a roller coaster ride for me since the day I bought my K-r.
I bought it with the 18-55mm kit lens and an additional Tamron 70-300mm. I really wanted the extra length.

From that point forward...it's been hectic. I was hooked once I learned I can get the older M42, K, M and A lenses for "not so much" money.
The first I bought was an A 50mm f1.7 lens. I still have it today and I still think it's one hell of a lens. Hard to nail focus at 1.7 without a focusing screen, but it can be done.
After that I took advantage of buying lenses and trying out what focal lengths work for me and what don't. The ones that I didn't enjoy, I sold for the same amount I bought them for.

After all the fiddling about, I now have a pretty clear view of what I want. The longer focal lengths are more my style, so I have already bought a Tamron 70-200 f2.8 and am now awaiting a DA* 300mm f4. Along them I also have a Sigma 17-70mm f2.8-4.

In the future, I probably see the acquistion of the DA 40mm for those times when I feel the need for less bulk. But it's a distant future at this point.

Hi all,

I'm selling my Cosina 100mm f3.5 Macro lens. It's an A type lens so aperture can be set from the body, while focus remains manual.
The lens can do 1:2 macro on it's own, but with the supplied adapter it goes to 1:1. There's also a 49mm Hoya UV filter supplied. The lens comes with it's original box and manual. Optics are clean and so is the lens body.
Price is 90 pounds plus postage. Offers considered.













Photo taken with the lens:

There's quite a difference in price though. The Pentax one comes up at around 350 pounds used if I remember correctly?

It is a shame to spoil the IQ of the DA 300 using a bad TC though, I agree.

I just realized that I'm not certain which converters work with the DA*.
I know one of them is the mentioned Pentax F1.7x. Anyone knows of another TC that might be compatible?

It does look that way, doesn't it?

@mille19:
Would you consider switching to the DA combo if you already had the Sigma?

I have to admit that at the moment I might be more inclined to switch. Looking at the pictures taken with my Sigma I see that the vast majority of them was between 440-500mm. So I'm guessing that losing the zoom versatility would not affect me as much.

Just out of interest...what do you think about the Sigma 100-300 f4? The one thing that puts me off that lens is that it's discontinued and you have to watch the market to catch a good one.

Davex,

did you own both lenses perhaps? Can you compare them side by side?
Thanks for the link, didn't realize the price has gone down that much.