Stephen Lewis , Dec 06, 2008; 08:09 a.m.
There's actually several questions here. Generally resolution is the ability to differentiate two objects (such as lines) and is usually a function of both sharpness and contrast. Shooting in RAW merely captures the full range of data which your sensor and electronics can capture, allowing for significant post processing, if necessary, and conversion to a lossless format (such as TIFF). JPEG is a compressed format which losses data each time it is opened and saved. Lo resolution output from high resolution capture essentially makes the pictures ok to look at, but unusable in terms of enlargement. It is accomplished in any of the popular post processing programs such as Photoshop, Nikon Capture, etc. generally resizing the pixel output and using the "save as" options. Hope this helps.