So far I used a Pentax RAW converter included with my once new cameras happily. Now I couldn't resist buying a Samsung Camera similar to my K20D and that one doesn't save its RAWs as PEF. I'll also need to handle M8's DNGs. The Samsung came without software CD and the Capture One 4.1 CD with the Leica didn't allow registering either. Which free RAW converters do you recommend? / Why is Lightroom - I don't know it - worth buying? Does any other not free RAW converter appear worth the money? How to evaluate trial versions? i.e. what should I be looking for? What kind of test images should I keep at hand to see various RAW converters' strengths & weaknesses clearly? TY so much. I feel pretty clueless in this field.