The Pentax press release for the K50 indicated that these two lenses had received upgrades, anyone know what the update(s) are?
http://www.dpreview.com/news/2013/06/12/Pentax-launches-k-50-k-500-16MP-mid-and-...

I want to thank you all for taking the time to reply. It is reassuring to read positive user experiences.

I wonder if forum members would be so kind as to post their experiences with this lens. It it the subject of a very critical review as I am sure you are aware of, but how do users rate the lens?

Sold pending payment

In mint unmarked condition. Comes in original Pentax box with all the original paperwork and instructions. Great kit lens with legendary build quality and weather sealing.

Bought with a K5 but never used - £60 inc Special Delivery.

Sold pending payment.

50-200mm WR lens in mint unmarked condition, comes with unused 49mm Jacobs UV and CPL filters worth £25. £95 inc RMSD

Lens sold

I bought a 10-20mm in December which developed a fault and was sent back. The repair took ages,(not SRS's fault) and I could not wait any longer so they sent out a replacement but could not process a refund. I had bid on and got another lens so the new one is surplus,like I say - bit of a weird one !!

Please bear with me on this one. I have a brand new Sigma 10-20mm f4-5.6 lens which I have received as a replacement but no longer require.

The only reason I don't have photos is because I want to leave the lens in its box unopened as sent out this week by SRS. It will have an unregistered three year warranty and when I registered the last one I got a free Sigma UV filter,not sure if this offer is still on but I will include the one I got. It is in mint condition and is a genuine multi-coated Sigma filter in a Sigma filter case.

I have been offered £260 trade in for the lens but want to offer it here first so if anyone is thinking about buying a new 10-20 here is a genuine saving over the current best price today on Camera Price Buster for the 10-20mm which is £329.99 at SRS, where this one came from.
I am looking for £267.55, £7.55 is for Royal Mail Special Delivery.