The Epson R-D1 is a digital rangefinder camera that uses the Leica M lens mount, introduced in 2004. It was the first digital rangefinder brought to market and was positioned as a specialist tool for photographers wanting to use M-mount lenses with a digital sensor.

Sales data for the R-D1 is thin, but a UK auction hammer result from 2023 saw one sell for £420, giving a useful reference point for what a working example is worth at saleroom level today. Because only a single record is available, this figure should be treated as indicative rather than a firm market price, and condition, shutter count and inclusion of the original charger and battery materially affect value.