I have been an enthusiastic photographer for many years, using SLRs with a particular interest in very wide angle photography. I have used full-frame fish-eye lenses (Sigma 16mm on OM2), a rectilinear fish-eye lens (Sigma 18mm on OM2), and front element fish-eye converters on Minolta Dimage Hi (Raynox DCR-FE180) and Nikon 8800 (Nikon FC-E9).
All these are now rendered obsolete by the Nikon 10.5mm full-frame fish-eye lens, which even enables you to make 360 degree spherical panoramas with only eight overlapping exposures, using a Nodal Ninja panoramic tripod head.
My work is now entirely digital. Until recently I used a Nikon 8800: smaller and more portable than an SLR. My first digital SLR, a Nikon D40x gave excellent results, and has recently been retired in favour of a D300s , an altogether different, and better machine.
I'm very pleased indeed with my Tokina 11-16mm f2.8 wide-angle zoom (thanks, Ken Rockwell for recommending this so highly: you were right!). For extreme portability, the Canon Digital Ixus 870 IS is great, and has made excellent mosaics of several pictures.
Some of my photographs here were taken with a Minolta Dimage 7Hi, and many with the Nikon 8800. There are more motor racing photos than any other type: they are from original 35mm transparencies taken with a Pentax S1a or an Olympus OM2. Originally scanned at 2,400dpi using a flatbed scanner with a transparency adapter, they have now been re-photographed using my Nikon and a Nikkor 105mm macro lens in a home-made zoomable rig, giving much better quality.
My (very under-used) splendid Meade ETX-90 telescope is finally producing photographs, using my Canon compact camera (870is), and connecting the two with a Skywatcher Universal Camera Adapter:
I use a 24" iMac with a Canon iP4700 inkjet printer.