As far as I know, there are no commercially available gigapixel cameras. The highest resolution digital camera back I am aware of is the Leaf Aptus 80 megapixel back for 2 1/4" format cameras like the Mamiya 645 (http://www.leaf-photography.com/products.asp).

Gigapixel photos are currently been generated using regular DSLR's or even point and shoot digital cameras and then stitching them together using computer software. For example here is my first near-gigapan taken using a Nikon D300s DSLR on a Gigapan Pro automated head (http://gigapansystems.com/):

[gigapan.org]

Another great site discussing panorama techniques is: [www.panoguide.com]

The most famous gigapan image of all time is one of the Obama Inauguration (taken with a point and shoot mounted on a prototype Gigapan head:

[gigapan.org]

Most incredible gigapan image I have seen is 45 gigapixel one of Dubai:

[gigapan.org]

And finally, for those who love the female form, a nice beach in Australia:

[gigapan.org]

Regards,

Michael A. Learmonth, B.A.Sc., M.B.A., M.Eng., J.D., LL.B., C.F.E.I., P.Eng.
Senior Associate, Giffin Koerth Forensic Engineering and Science
40 University Avenue, Suite 800
Toronto, Ontario, Canada M5J 1T1
Phone: 416-368-1700 ext. 225
Fax: 416-368-5576