Thank you Dave,
The panorama feature is nothing short of amazing.
I've attached a photo of my camera, panoramic head and tripod that are used to take a series of photos for spherical panoramas. The head's principal aim is to eliminate
parallax error but it also serves to maximise image sharpness by preventing camera movement during capture. The head allows the camera to be rotated in selectable angular steps both in plan and vertically.
For those interested, spherical panoramas are formed by taking a series of images, normally shot with the camera in portrait orientation, with a suitable overlap (typically a quarter to a third of the image width). For my camera body and lens I would need to shoot a minimum of 2 rows of 8 images plus an up shot (zenith) and down shot (nadir) for a full spherical panorama.
The nadir is problematic because of course it features the tripod and in a truly full spherical panorama the tripod isn't visible and viewing is akin to floating in the centre of a hollow sphere, looking outwards (the image you see is the surface of the sphere). Therefore, if a nadir is to be included (I don't bother with them - see below) the photographer will generally shoot all the shots on the head, then move the tripod out the way and shoot the nadir hand-held.
Back at the computer the images are fed into a stitching application that, if set to stitch automatically (I manually stitch for best results) analyses each image pair and builds up a number of Control Points, i.e. it notes the pixel coordinates of matching features of adjacent (overlapping) images. From this information the program is able to warp each image so that it theoretically overlaps exactly with its neighbours. The individual images are then blended into one another and output as a single overall image of, effectively, an 'unwrapped' sphere's surface.
From here the pano is fed into image editing software like Photoshop (I use Capture NX2) and adjusted to suit (i.e. sharpened etc) before being saved.
Once more the image is fed into an application, this time Pano2VR, which takes the flat spherical panorama image, wraps it into a sphere and outputs as either a Flash or Quicktime interactive 'movie'. This is the file you are manipulating on my website. In essence you have loaded a Flash movie into my (Flash movie itself) website. Simple huh?
Actually it's not as bad as it probably sounds. The greatest headache for me is out in the field. I don't include a nadir because my panos are HDR panos and this complicates the 'hand holding' part of taking the nadir shot. Even without a nadir, I have the difficulty of 'hiding' the shadow cast by the tripod, pano head and camera, which can be very long indeed, to contend with. Generally the solution is to:
1. Hide the shadow cast by my camera gear in a shadow cast by nearby rocks/cairn etc;
2. Setup the camera next to a cliff or significant drop so that the shadow cast by my gear 'falls' off the edge;
3. Wait until a (ideally small) cloud passes between the sun and my camera gear so that locally I am in shadow and my own shadow is erased.
I find option 2 to be the preferred option because it also tends to result in impressive views when looking downward when navigating the finished pano.