I have a copy of the Tamron 28-75mm and am very satisfied with it. The only problem I have found is that it is very prone to flare if the sun is anywhere near the front element. That apart it's a good performer optically.

I'm with you there Mike. Even allowing for time to get to know the camera I won't need to make any decisions until early April. Of course if the reports show the AF is fast and accurate, and it has a good sized buffer and no sensor problems I could bring purchase forward.

Same problem here Mike. Mind you it does look good against a leaden sky. I wonder if it's more a problem with advancing subjects rather than retreating ones. Seems that way to me.

I finished up buying a D300, 300mm f4 and 1.5X tc to sort the problem. Kept the Pentax gear for everything else as it's excellent. If the K3 will do what I need for aircraft, ie. fast spot-on focusing, and track accurately too, I won't hesitate to px the Nikon gear for a K3. Think I'll hire one next year first though to make my own mind up.

And delivered safely, well packed and with excellent communicatons.

Thank you Giofi.

pm sent

I've an immaculate 55-300 DA-L for sale. If you are interested pm me and we can discuss price.

I've got a Z1 (not P) and although I hadn't used it for some 6 or 7 years I recently put a film through and it behaved impeccably. Pretty good I think.

I too have found that if the lens I amusing (usually Pentax 50-300 or Sigma 150-500) loses focus it's impossible to regain it quickly. What I usually do is quickly refocus on a terrestrial object such as maybe a very distant tree or some other high-contrast distant object. I can then regain the aircraft, focus and continue.

It's not a brilliant solution but does work although there have been several times when I've thought about buying a different marque specifically for aircraft photography.

You have a message.

I've been pleasantly surprised by the number of Pentax cameras I've seen today at the Llangollen Railway Spring Gala. I've probably seen 4 or 5 users today excluing myself. That's pretty good considering I was only there for around half a day.