Gast
Hello Guest!
For extreme dynamic ranges, the A-49 is an ideal developer for the Maco IR820c.
Here are my settings: the cut-off wavelength of the filters is 695 nm or 715 nm depending on the lighting conditions; ISO approx. (!) ASA 3 to ASA 0 / development in stock solution / Agfa agitation cycle / 20°C / 8.5 mins.
Best regards!