These are all scans from slides taken in the 1960s. The originals were each problematic due to poorlight conditions. The Epson 4870 improves them to a very great degree.
HP 2700s Epson 4870 Perfection 2400dpi 4800 dpi Tehuantepec Turtle Egg seller (1) 9600 dpi Tehuantepec Turtle Egg seller (2)
4800 dpi 9600 dpi My uncles and aunt in Tehuantepec
This works particularly well when the original has problems of color depth, etc.
Zinacantan Musicians 4800 dpi San Cristobal Bala and Amir khan 9600 dpi Amir Khan and Chatturlal