Rollei RHS High Speed Film Developer is a low- to high-speed black-and-white negative film developer producing high acutance. Made for use with Rollei R³ films, this developer is designed to achieve optimum sharpness.
Note:
Recommended dilution of RHS is 1:7
Made for use with Rollei R³ films
This developer has a strong effect on film speed, grain and acutance
Too short a development will give rise to very coarse grain and very thin negatives - in short, an unsatisfactory result