Congratulations to the winner and all entrants. Thanks too to the judge.

I have interpeted this as "flight" from the Martian invaders.........

Do you mean photographer who wants to learn, or Vulcan ?

This was discussed at length on another forum. Having handled them both I cannot tell them apart. All speculation but the following were suggested as reasons for the different material of the K10D screen:

1. To make the viewfinder brighter.
2. To reduce manufacturing costs.

As far as 1. is concerned I notice no difference between the two screens when looking through the viewfinder, and have no facts to form an opinion on 2.

I do find it odd that something so simple as switching screens cures the problem, but it does.

It is worth noting that other pentax replacement screens (gridlines etc.) seem to have the same effect of curing the problem as well. This is annecdotal evidence as I have no knowlege myself. I suppose this might lead one to speculate that the material used for the standard screen came about about as a result of marketing pressure (1.) , or financial pressure (2.).

I dont have any screw mount lenses so will leave most of your questions to someone who does.

However the focus confirmation ( green hexagon) will give you a confirmation of focus with manual focus lenses. I use this method sometimes with my K10D (and DS before that) and my K and M series lenses. Most of the time i prefer to eyeball the focus as the viewfinder confirmation seems to have a slightly wider lattitude for sharp focus than reality.

Cheers !

Not being funny.....but the manual is always a good place to start !!

Ok thanks. I would like to find one but it seems to be the only M lens below 200mm that does not appear on ebay.

Pentax M 24-50mm f1:4 zoom

Anyone here have this lens or any knowlege of it ?