I am considering the Sigma 120-400mm for myself. Currently I have the 170-500mm and the IQ is not the best. A little soft and lacking in contrast. But having said that, working with the images in PS they come out okay.

Anyway I digress, The 120-400mm, would complement the 50-135mm well, with only 15mm overlap at the long end. This months practical photography rated it highly, in fact put it 10 points higher than the Canon 100-400mm L lens, and won the group test. Praise indeed! And all this for a street price of £600!

I am very tempted to get one, maybe thats the route to go.

Hope this helps Nathan.

I think you are right George, but the Pentax coatings are green and Samsung Blue. However, they are both made in the same factory, and the colours are only the to differantiate rather than change the effect.

I concur.

Although I have not been to France to order Pentax, gear, the english speaking world are sort of forgetting that Pentax exist. More fool them, but not good for use english speaking users.
However, even though certain shops are not stocking Pentax gear (Jessops spring to mind), there are plenty of places that do. For instance Jacobs in Manchester can't get enough K-7 bodies to sell, and Mathers in Bolton promote Pentax gear. All this "Pentax Will Die" is nonsense. If for som reason it did, there would be another who would continue the K mount due to the massive number of users.....but it won't, like it did'nt back in 2003 when Pentax had no serious DSLR, and the 90's with no "pro" camera, 80's, 70's etc.....
I just wish that more stores had the complete selection to choose from...
Anyway, with SRS and cameraworld and WEX, I can get what I want, but without testing.
Rant over.

16-45 over the 16-50? Well, the 16-50 is faster and has sealing, but the 16-45 is a lot cheaper and still great. Personally go fo the 16-45, as most of the time you will be stepping down anyway, and I got mine for £180.
12-24 Samsung is cheaper and essentially the Pentax but with different coatings, and again, cheaper.
10-20, I have the sigma and its great.
Finally, if you don't want to buy new, there are plenty (okay - millions!) of k mount primes out there to get hold of, from fleabay to classic dealers. I have bought a few and work well with my bodies.

Long Live Pentax and the K mount!

Yes, I have this lens. I don't use it often but it is a great lens.

I do have the Sigma 10-20mm and I love it!
I don't have the 12-24 but I have heard it is excellent. If you cannot afford the 12-24mm, then the 10-20mm is an excellent alternative.
In fact it has got a cult following in all mounts.
I have heard that the Tamron 10-24 is getting good reviews, but in a recent Mag test, it was'nt quite as good as the Sigma.

Either way, what ever lens you get, they have all got good reputations.

Oh. BTW can this be done on the K10D? As it does not have this setting in the Menu.

Thanks for this, Now I just need the printed chart to sort.

I have had one or two problems with AF (intermittent), mainly with wide apertures (ie F2.8 or wider) where the AF of the K20D is out. It mainly focuses on an area behind the point I want to focus on.
Now I have found this AF adjustment in the menus of the K20D.
Has anyone used it? What are the best ways to use it, and is it subject to individual lenses? (I have noticed is will do one shot or ALL in the settings, whatever that means)

Advices please.

Jacobs have said that they will only stock the Black, however, if you want another colour they will order for you.

I can say, as I have the cameras I am about to mention, the DS is slow, the K10D is a lot faster, and the K20D a little faster than the K10D. As for the K-7 etc I don't have first hand experience.