[2] In some cases it even approaches the quality produced by full-frame DSLRs like the Nikon D700 and the Canon 5DMkII, both with larger sensors[citation needed].

It is lighter than other Pentax DSLRs, including the K2000, and lacks the weather sealing of the K10D, K200D, K20D, and K-7, and is intended to be sold with lightweight DA-L-series lenses.

The Pentax K-x includes in-body stabilization for shake reduction, similar to the Sony Optical Steady-Shot system.

HDR takes three frames of different exposure and combines them into a single jpeg image while turning off the shake reduction.

There are many reports that using 4xAA rechargeable Sanyo Eneloop batteries will give ~500–1000 photos on a single charge with firmware 1.01 depending on usage.

The camera can shoot RAW images using either the Pentax PEF format or the open standard Adobe Digital negative (DNG).

The camera is capable of recording HD video files which made it quite popular for some independent filmmakers.