The damage reduction is 67% for frigates and destroyers; 50% for cruisers and capitals. Damper Field is useful to temporarily keep defenses up while (unlike shields) allowing flux to be dissipated.
Tips and Strategies
The following section contains user-submitted suggestions, these may be inaccurate or outdated.
Changelog
Patch0.9:
Now reduces damage by 67% for frigates and destroyers; 50% for cruisers and capitals
Damper-field-using frigates should only rarely show up in smaller faction fleets
Patch0.8.1a: Damage reduction down to 50% (from 67%), charge regen rate halved (1 per 20 seconds)