Digital photographs recorded in their pure, RAW, form can be typically exported as either JPEGs or TIFFs images for sharing or publishing purposes, because this will reduce their file size.
A potential rw2 to tiff conversion (export of Panasonic files to TIFF format), will also remove any metadata recorded by the camera and reduce the quality through the compression algorithm. This can be done in various photo editing software with proper support of your digital camera, for example .rw2 files created by Panasonic Limux cameras.