You have to click on the thumbnail to really see this image. There is also a high res version here (a little more than a meg), and it's worth it to see the amazing detail.
The panoramic image was made with a Seitz Roundshot 35/35s camera, an exceptional tool that allows you to create 360 degree images (and beyond, if you want) on conventional 35mm film.
The subject is Piazza San Marco in a light May rain in 2002. The camera was situated at the Procuratie Nuove under the colonnade looking across the Piazza. From right to left, the image sweeps past the base of the campanile, the Basilica, the Orologio, the entire length of the Procuratie Vecchie and Museo Correr (Ala Napoleonica), and finally back to the Procuratie Nuove.
It's always a challenge to compose an extreme panoramic image. Standard compositional tenets like the "rule of threes" are useless. One trick I use, which you can see in this photo, is to use a human looking into the scene from one side as a means of drawing the viewer in. Here it's the French teenager on the right, peering moodily across the rainy Piazza.
Venice drove my interest in panoramic photography. It's a 360 degree kind of place, and no conventionally formatted image can possibly reflect the immersive quality of its beauty. It's not just that the Gothic palazzo in front of you is a miracle. It's the marble wellhead behind you, the 14th century church to the right of you and the gilded light on the canal to your left. I've no doubt that the way that beauty surrounds a person in Venice is what caused "view painters" (the vedute school) like Canaletto and Guardi to break the bounds of perspective and picture frame to invent and define the new painting idiom.
I started by shooting multiple frames of a wide (or tall scene) then overlapping the prints Hockney-style. Then I started fusing the images properly by learning Photoshop. In the last few years, I've taken to using specialized panoramic cameras, including the Roundshot and a Hasselblad XPan, though I still use the tiling/Photoshop method, which for certain effects, is unbeatable. I use digital cameras every now and then, but am waiting for resolution to improve. Next trip to Venice (in a month), I'll port a 5 megapixel cam with me.