Quote: Re (4), after you've finished editing you probably want to 'Save As' *.tif (lossless) rather than *.jpg (lossy), to preserve all that hard earned, improved detail!
This brings me to another question... as jpeg for display online. Surely the jpegs from RAW will still look better online than the out-of-camera jpegs look online?
Is saving as tiff really online worthwhile if you are planning on printing the picture?