A heads up for anyone interested.
DXO Optics Pro v6.2, a very good RAW convertor & image editor/manager with some powerful features, is available for a discounted price until the end of this month. The discount was due to expire mid-June - now they have extended the offer until 30 June. The discount is equal to about 30-50% off list price. The USD price is now $99. Given the current strength of the Australian dollar, that made it a good deal for me.
https://shop.dxo.com/login.php?CountryShow=United%20States
Dxo Optics Pro is most useful if you have the Pentax bodies the software has in its calibration database, and the lenses they also have in their lens profile database.
For Pentax the bodies Dxo has special support for are the K10, K200D, K20D, K7 and Km. No K-x yet
K-mount lenses with Dxo profiles include:
Pentax smc DA 18-55mm f/3.5-5.6 AL II
Pentax smc D-FA 50mm f/2.8 Macro
Pentax smc DA 16-50mm f/2.8 ED AL [IF] SDM
Pentax smc DA 18-55mm f/3.5-5.6 AL
Pentax smc DA 50-200mm f/4-5.6 ED
Samsung D-XENON 12-24mm or Pentax smc DA 12-24mm f/4
Samsung 18-250mm f/3.5-6.3 or Tamron AF18-250mm f/3.5-6.3 Di II LD Aspherical (IF) or Pentax DA 18-250mm f/3.5-6.3
Pentax smc DA 50-135mm f/2.8 ED [IF] SDM
I mainly bought Dxo to work with my K200D/ 18-55 WR combo to help give that camera some extra headroom. Dxo can work with the camera's RAW files directly, and I have been quite impressed so far with what it can do (eg highlight recovery, distortion correction and noise reduction).
Dxo works with the K-x too, but until they have a Dxo module for the K-x you can only feed Dxo K-x JPG's, not K-x RAW. And many of the image enhancement features of Dxo don't work for the K-x automagically, (since they depend on having calibration modules that match particular camera bodies) although you still can operate most of them manually.
A handy Dxo v6.2 User Guide is here:
http://www.dxo.com/var/dxo/storage/fckeditor/File/manuels/DxO_Optics_Pro_v6.2_User_guide.pdf
Free 30 day trial download here:
Free Trial Version