OK gang, please remember this is a Classified Advert, so let's stick to the point. There's General Duscussion for debates....

The only way I can think is to view an image with a faulty pixel at 1600% in Photoshop and manually map its location.

Then pixel map and check it out. Then reset and check it again.

Alternatively, contact Pentax and see if they know. It might have to be the engineers in Japan that you have to ask.

It's all in the mind, Joe S....

Nicely done images Amin, some incredible things can be made out of smoke.

PM sent

Agreed, but for a different reason. If the broadband connection goes down then I lose all the green markers for unread posts, and that's a nightmare.

It doesn't happen very often, but if it never happened that would be better!

Our problem is that we buy one for me and one for Sue. The consequence of that is that generally we buy when the price hits a low point. With the K20D it meant the upgrade from the K10D cost only about £100 per camera.

We might not be so lucky with the K7, but there will be some future deal that makes us move quickly.

At the moment we're more in need of longer lenses than 300mm and the choice is not brilliant. We're taking our time to get the right opportunity for the right lens.

An interesting question Richard, perhaps it could in the engineering menus, but why would we want to reveal faulty pixels? I know it's not quite the same but it would be a bit like having a faulty shutter repaired and then asking if the fault could be put back.

Are you concerned that by pixel mapping something is being lost? Maybe a faulty pixel could be OK again after a rest, or something like that?

I wonder if we pixel map again the camera looks at every pixel, or just the ones not previously removed.

That's an excellent review, many thanks for posting the link.

When pixel mapping the camera identifies and compensates for faulty pixels, so once you've mapped I presume the camera knows from then onwards not to see those pixels but to fill in the blanks by some form of sampling from neighbouring ones.

Catch in focus works when a manual focus lens is on the body and the body is set to AF. The shutter will only release when the camera finds it's in focus and the green hexagon lights up. So if you prefocus on a spot and something is moving towards that spot, when it arrives at the point of focus the shutter will release. I haven't actually used this feature but I can see situations where I might find it useful.

I've never liked the Leica rangefinders. I was lent an M3 which I did try, but I thought it bulky, heavy and the viewfinder was dreadful. Not a patch on the Pentax ME Super. Did it take better pictures? Not really, no.

The screw thread leicas were at least smaller and quite nice in a way, but still very slow to use. IMHO the design belongs to a past age.