John, thanks for the hint! Reading reviews on the net it seems to work fine. I never get around to do the adjustment with "manual" methods, so I will download the trial version and try it.....

Is this a crop or the whole photo?

Matt, I would consider returning it for repair / replacement.

Hi, I believe that warranties are EU wide, so issues, if any, would arise if the lens was imported from outside the EU. That is for manufacturer warranty AFAIK, statutory warranty is given by the seller, so it does not depend on the origin of the lens.

Actually the 28-105 power zoom lens has a good reputation on the other Forum. If you check the lens review session it has one of the highest ratings of all non-* FA zooms.
It has its drawbacks, for instance size and rotating front element, which makes use of polarisers difficult.

Hi Terry,
The FA 28-105 pz lens in my opinion a good performer and very good value for money, a bit heavy though.
But if you are looking for a one-lens solution, its problem is that on a KR ( as on all crop factor DSRLs) it is an equivalent of a 42-157 lens in "film" (full frame) format so no wideangle.
A lens that would provide the same coverage on a K-R would be a Pentax DA 17-70 f.4, which has a very good reputation. Or if you want even more reach, there is a Pentax 18-135 (equivalent to 18-200 in full frame format).

I have both the 28-105 and the 18-135, and I am happy with both. The advantage of the 28-105 is that it is available used at a much lower price. It is not in production any longer, so not available new.

All 3 these lenses have been offered on this forum recently, not sure if still available. If you are interested you could put a "wanted" ad and I am sure you will receive some offers.

Steve, i have offered to buy the 50mm, subject to receiving a couple of photos of the lens,. I still would like to proceed.
Thanks

BR,

Well, it's interesting that the new Sigma 35 1.4, which is a high end and full frame lens, is available in Pentax mount. The new Sigma 30 1.4, which is half the price and APS-C, is not available in Pentax mount.

It could be that the Pentax mount is coming later, but what is the reason for Sigma to release a full frame lens in Pentax format and not an APS-C?

On the other hand the new Sigma 35 f1.4 lens is also sold in Pentax mount, and that is a high end (and full frame) lens. So maybe this is changing after Ricoh took over Pentax?

Agree in full.

I would also try a b&w conversion on n. 5, I think it might work out well.

Great set!