Originally posted by drwho9437 Let me give you the scoop.
I had a Canon 300D and just shot the kit for a long time. Then I got a 50mm, then the Sigma 10-20, then the 35mm f2, sold the 50mm. Then I got sick of the lag of the 300D on start up and got a black (hated the silver 300D's looks) 400D. One week after I shelled out for the 400D Pentax released the K10D. Purchased a 100mm macro.
Now that there is a K20D, people are willing to part with the K10D for about 500 dollars it seems.
Now I only really shoot RAW, I use lightroom. I looked over the review of the K10D again at dpreview and many lens tests. The item that concerns me is the dynamic range test. I find I don't have enough dynamic range with my 400D and according to their result there is strange clipping of highlights and no real roll off for the K10D while the K20D has a normal roll off.
Is this true, that the DR is much better on the K20D? I guess landscape people would notice most dark shadows and brights skies.
I'm attracted to pentax for the limited lenses and the in body IS. I don't like how heavy the bodies have gotten though.
I'm mostly just interested in the DR issue I am asking about. I also love that Pentax shooters are a community.
First, the best dynamic range on the K10 is had at ISO 100, and is ~11 stops. The DR progressively shortens as you raise the ISO, until at ISO 1600 you are down to ~9 stops.
This is still a couple of stops more DR than the longest range colour print films ever were.
While I haven't actually tested the K20, my impression is that the DR is similar to that of the K10, perhaps a little longer. The K20 does have a dynamic range extension in the Fn menu (in ISO adjust) that seems to increase the DR by about a stop, at the cost of losing 100 ISO.