One of my more recent gigapixel photos.
Lake Matheson, near the Fox Glacier in South Westland, New Zealand, is famous for its reflected views of Aoraki/Mount Cook and Mount Tasman. This Glorious morning at around 7:45 on January 8th 2019, the water was nearly glass smooth and a "Sea Smoke" fog drifted across it's surface.
Image was shot with Canon 5DSR, f/11, Bracketed 1/200th, 1/640 & 1/60 sec. exposure, ISO 100. It is made up of 68 HDR images, 4 rows x 17 columns approximately 33% overlap in portrait orientation.
The original image is:
1.79 Gigs-pixels
24,452 x 73,356 pixels
81.5" x 245" 300 PPI cropped image size
Image shown is 1:3 ratio cropped.
A high resolution virtual tour of the photo can be seen here: http://abbascreationsphotography.com/Lake_Matherson/Lake_Matherson.html