Originally posted by bull drinkwater so what format am i seeing it in
Not sure about all programs but some "viewers" are just showing you the jpeg preview that is embedded in the RAW. Depending on your program you may be looking at the jpeg or the program may convert the RAW "on the fly" to something viewable.
When I first started with RAW I was told to process the RAW to suit, save it out as either tiff or jpeg and delete the RAW. I read this in several articles but it seemed to contradict what common sense and the Lightroom manual state. So now everything stays as RAW, I process the files to suit and that's it. Just like you would a film negative. When I need that image for something it gets exported in the format I need. For stock sites I make a downsized jpeg, for sending to a print lab either a full size jpeg or tiff. For printing in house I just use the Lightroom module which prints from the RAW. I assume it converts the RAW on the fly to something that will print but that format is not saved.
The thing I love about RAW is that you can go back as many times as you want and start over. Some files I processed very early came out really bad because I had no idea what I was doing. I can go back now with my expanded skill set and do them over with no loss. Or by creating virtual copies you can process a RAW as many different ways as you want because you never change the 'negative'.