QUOTE
(1)why must the file then be transferred to a different app and (2)transformed into a JPEG
(1) As far as I know, RAW is simply a file, usually created in a camera. Cameras can usually create image files in several formats (jpeg, mp4, etc). But, unless you want to do more than simply
view them in something other than the camera, you
must import them into some kind of app. That app may do nothing more than present a slide show, but you still must do the importing regardless of the original format. Certainly, if you want to do most any kind of editing, you will, again, have to import the file into some kind of app.
(2) As mentioned above by
Jon and
Paddy, there are many apps that can import and edit the RAW format. And even Elements allows one to import, edit, and save in numerous other formats than JPEG. I usually us PSD, but TIF does save some disk space while maintaining any Layers at the same time. The
only time I save
anything as JPEG is for something I plan on uploading to a web site where I am more concerned about space than quality. And even then, I often save a TIF or PSD version, first.
I don't have any app that actually Saves in RAW. Lightroom (and most likely, Photoshop) can convert it to DNG. Of course, edits in Lightroom are actually made on a way that doesn't change the original, anyway, so you still have the RAW version even after making edits.
The point is, there are multiple "non-lossy" formats and any
good image editing app will offer several of those as final output options. Importing a RAW image is not a process that 'converts' the original file any of the apps I use. That original file remains on my drive until I decide to erase/move it.
I think of JPEG as simply one that offers
thousands of colors instead the 256 allowed by GIF. I use both mainly for one-off, usually much smaller (800 x 600 pixels), images for email, forums posting, etc; rarely ever for printing. When I had a much simpler camera that produced only JPEG's, I simply reduced the size, keeping, all the available pixels, until I could get a reasonable resolution for printing of ~240ppi.