An F-stop timer to be used in the traditional darkroom for making wet prints.

The exposure is first defined around a base exposure expressed in stops. Then additional dodging and burning exposure can also be added.

This timer also support the split printing technique by providing as many multiple grade exposure as needed, each having their own printing sequence.

A test strip exposing mode with constant stop increment is also available to establish the correct base exposure. Stop increments goes down to 1/24 of a stop.

The F-Stop Timer trigger the lamp of the enlarger using the Enlarger Bluetooth Adapter. Alternatively, the enlarger can be controlled manually using the sounds emitted by the program to indicate correct triggering time.