ΔStop 100 Timer Special Edition

ΔStop 100 is a dedicated enlarger timer that uses logarithmic, f-stop based timing instead of linear seconds. You set a base exposure in stops and every click changes exposure by a fixed fraction of a stop, so the math stays the same no matter the print size or paper type. That means faster test strips, clearer intent with every change, and less guesswork when a print needs a tiny nudge instead of a full second.

It behaves the way photographers already think: exposure as stops, not time. The interface is focused on repeatable decisions, so you can move from test to final with confidence and keep a consistent record of the choices that got you there.

Included in this:

• 1 fully assembled and tested wood-paneled Special Edition ΔStop 100 timer
• 5VDC 1A wall adapter power supply
• 110VAC relay to trigger most standard enlargers