The ISO Lux is an Italian-made rangefinder camera produced by ISO of Milan in the post-war period. It belongs to the small group of Italian 35mm rangefinders that emerged in the late 1940s and early 1950s, when domestic manufacturers competed with established German makers in the consumer and enthusiast market.

The ISO Lux is a scarce camera and saleroom appearances are infrequent, so the price evidence is thin. The single recorded UK auction hammer result, from June 2021, was £4,000, which gives an indication of what a clean example has been worth at saleroom level rather than a reliable retail figure for today. Buyers asking what an ISO Lux sells for should treat that result as a data point rather than a working median, since one sale in the auction market cannot establish a current range.