Originally posted by HuhPentax? Oh whats the difference between the K-7 and K20d other then the slower fps? Does the K-7 have a weather seal also? Sorry for the questions I'm new to Pentax cameras. Pentax never crossed my mind on cameras but I'm tired of the whole Canon and Nikon thing, and I wanted to try something new Ya know.
The K7 is weather sealed, faster AF, higher fps and is more compact. Also, it is much quieter than the K10/K20 (which have the same body). And finally you get HD movie capability.
On the other hand the K20 has basically identical image quality, which I find very, very good and en par with more expensive cameras from Canon or Nikon, at least on standard ISO settings. Byond 1000ISO, the K20 (and presumably the K7, havion the same sensor) will show more noise, than CaNikon - BUT because the internal noise reduction id less aggressive. Thus the Pentax images show more detail, than Canon's. And noise reduction can and should be applied in post-processing anyway, as the computer software is much more capable, than internal nr.
Another very good camera is the small K-x, which does not sprot the professional features (lower fps, smaller viewfinder, no battery grip etc.), but has very good high ISO capabilities, due to haviong a different sensor from the K20/K7, with a smaller pixel count.
A K20 or K7 is so cheap (compared to CaNikons of the same capabilities), that you can add a Kx just for high ISO shooting - and get a backup body thrown in.
Ben