Summary: I have owned this camera since Feburary of 2011. The features have been written about extensively so I will write about how it is to use it. I have pounded this camera in the dirt, dust, wind, rain, and snow. I have had it photographing offroad races, wilderness in all seasons. It has just never failed. The dust and water sealing works impeccably on the body and lenses. I have shot down to zero degrees without an issue.
Summary: I like this camera so far. It is big improvement over the k10''s I have been using for a long time. Buttons are easy to access and use and I feel like I can adjust the settings faster. I have small hands and it fits my hands well and is easy to hold. I use a battery grip and it is well balanced. I am happy with it for the price.
Summary: In the short time that i have had it ,its been a great upgrade from the FS-1 that i had , also all my lenses fit. The learning curve is a bit steep if you want to understand all the capabilities of this fine camera.
Summary: This camera is a beast. Working in the construction industry I was looking for a camera that would last in demanding conditions, Pentax seems like a good choice, I had the waterproof point in shoot that was a few years old it is was a workhorse but it was time to upgrade to something better. About a year after purchasing the camera while out on the jobsite I dropped the camera on the dirt it bounced down into a trench that was 10 feet deep.
Excerpt: I was glad on one hand that I'd passed on the K-20D for the K-7, but on the other hand hugely disappointed when the K-5 rolled out 5 months after I got my K-7. Most impressive about the K-7 and the K-5 as well, is the very nice & compact magnesium body, that Pentax put forth a very good design in its feel and ergonomics. The camera has an incredible feel in your hands.