Check the opening image at:
http://www.birdphotographers.net/for...ad.php?t=48899
Then look up Natures Best, fall, 2004, page 21. The image is printed full page. It is a 3 megapixel crop from a 6-megapixel image, shot only as a jpeg. It has sold as 16x18 inch prints in fine art galleries.
Check out my bird gallery:
http://www.clarkvision.com/galleries/gallery.bird
Some were raw captures, some jpeg. Can you tell which is which? I have sold numerous 16x20 inch bird prints captured as jpegs.
There are pro photographers who shoot jpegs. A google search will find some.
If you get it right in camera, you don't need much or any image processing!
Roger