Early 35mm scanning was done with a Nikon LS-1000 CoolScan. This unit has LED illumination and 12-bit A/D converters. There's no backing scratch it couldn't resolve! Medium format images were scanned on a Howtek Scanmaster 4500 drum scanner at from 500 to 1000 dpi. The drum scanner uses incandescent illumination and photomultiplier image pickup tubes. 12 bit-A/D conversion is done following an analog log conversion stage. More recent film scanning is done with an Epson Perfection 4990 Photo scanner. These days I have access to a Hasselblad scanner, but I no longer shoot on film.
The newer photos are processed using Adobe Photoshop Lightroom and Photoshop on Mac OS X. ImageMagick is used by the web server for automated image resampling on the newer photo galleries.