Thanks Mike.

Looking at the various Sigma sites the allegedly AF compatible lenses are HSM, but not in their Pentax incarnation.

Mt brain hurts.

Oh!

According to their table here some of their HSM lenses do retain AF. Are they using screw drive?

Unless it's dark

I understand that Pentax lens SDM does not work on Sigma 1.4 TCs but HSM does, and HSM works on a Pentax body. Does anyone know why this is?

We do not seem to have heard from The inimitable Mr Lazarette recently.

Anyone know where he has got to?

Personally I wouldn't publish them (or even have taken them) but you might offer them to the police for their investigation.

Interesting thought John.

There are advantages to having it in digital format, better still on line. Obvious ones are that it is easier to hit F and search for a phrase than to look through the index. If there is a firmware update which changes the function of the camera it mat render the destructions wrong, and they are not going to issue an updated version, whereas if it is on line then it can be kept up to date. I have also to confess to being a bit of a tree hugger, so not using paper appeals to me.

On the other hand it feels right to have a manual and it will take a while for this perception to wear off.

The price of the K7 seems to be coming down whereas the K20 as it is no longer in production is getting more expensive if you can find one (assuming you are looking for a new one). On this ground then the K7 has to be the way to go. The one thing the K20 has going for it is the chunky feel. If you need this, the K7 is going to feel a bit scrawny.

Sounds as if it should then. I knew there was one body which needed a firmware update.

Clicky.

Barrie - are you sure about the K200? Bear in mind there is no screwdrive on the 150-500. Isn't there a minimum firmware level or am I thinking of the K100?