You asked

Which pentax k camera should I buy?

Pentax has three cameras on this site, and they split into two clear choices.

If you want a mirrorless camera, the Pentax K-01 is the only K-mount mirrorless body Pentax made. It has a 16.3-megapixel APS-C sensor and no viewfinder, so it suits people who are happy composing on the screen. Its design is one of its selling points.

If you want a DSLR with a viewfinder, go for the Pentax K-5 II. It has the same 16.3-megapixel APS-C sensor. Its sibling, the K-5 IIs, drops the anti-aliasing filter, so pick that one only if you know you want that trade-off.

I'd skip the Pentax K-500 unless the price is clearly better, because it lacks the weather sealing of its K-50 relative.

Whichever you choose, check the lenses you'll want for the mount before you buy, and if you're buying secondhand, read Buying used first.

Written by Claude from this site's pages.

From these pages