Originally posted by varnco
K3 screen fits pentax?
Errr, unfortunately I cant answer that. I got mine off ebay from some seller that was just selling that 1 screen, not someone who was pushing a lot of them. And I cant remember if it had been cutted to fit or not, I _think_ it might have been. So I dont want to tell anyone to just get a new km3 and then they come back angry at me because it didnt fit.
There is someone on ebay selling the k1000 screen to fit k10d though, maybe thats worth checking out. I just love split prism! but the katz eye is priced way too high imo, some ebay alternatives like that k1000 screen and someone using a minolta screen are much more affordable and makes it worth dropping a small sum of money on it to see if it works well.
If you want to find out if the km3 fits then I suppose with a lot of google'ing it could be possible to get the measurements of both screens and compare them.
As for the performance of the screen I can briefly summarize that it works great and without any exposure problems, as long as the lens is fast, I dont know exactly how fast it has to be to avoid any problems but I can vouch for f2.8 working great and f5.6 working not-so-great to terrible depending on the lens used. With a sigma zoom I have that is f3.5 on the wide and and 5.6 on the long end it works fine on the wide end but on the long end its terrible and I need to put +3 ev just to get it somewhat back to normal and then I cant + the ev any more if I need to either.
But I guess its common knowledge that split prisms are for fast lenses.