Victory against the Rams would have taken Paul Jewell's outfit back to the top of the Championship and despite getting off to the best possible start with a superb goal from striker Jason Roberts they could not withstand the heat for the second-half Derby comeback.
Roberts gave his side the lead after half-an-hour when he picked up a superb throughball from David Graham before slotting his shot past Camp in the Derby goal.
The home side almost added a second when Nathan Ellington saw his shot blocked and Jimmy Bullard kicked the rebound wide from two yards but the second half was a different story.
The Rams equalised when Grzegorz Rasiak fired home from just inside the area after Wigan keeper John Filan had made a tremendous save from the same player.
And Derby's comeback was complete with nine minutes left when substitute Tommy Smith sent a glancing header past Filan following a superb run and cross from Morten Bisgaard.