LESS THAN STANDARD SEPARATION IN TCA BETWEEN VFR PHOTO ACFT AND IFR ACR DEP. OPERATIONAL ERROR.

Narrative

WHILE WORKING THE DTW E DEP POS I WAS ADVISED BY THE AREA SUPVR THAT HE APPROVED AN ACFT TO OPERATE APPROX 6-7 MI NE OF DTW. THE ACFT WAS TO BE IN THIS AREA APPROX 10 MINS TO PHOTOGRAPH THE INTXN OF INTERSTATE 94 AND THE SOUTHFIELD FREEWAY. THE ACFT WAS SUPPOSED TO FINISH THIS OPERATION PRIOR TO THE NOON DEP RUSH. THE ACFT; SMA X; DEPARTED DTW AND WAS ASSIGNED AN ALT OF 3500' THE TWR WAS ADVISED TO RESTRICT ALL E DEPS TO 3000'. THE NORMAL STANDARD INSTRUMENT DEP (SID) THE METRO 6 DEP IS CLB AND MAINTAIN 5000'. BECAUSE OF PAST PROBS WITH FLT CREWS CLBING TO 6000' INSTEAD OF 5000'; I ALWAYS RESTATE MAINTAIN 5000'. TFC STARTED TO BUILD AND ACR Y DEPARTED. BY ERROR; I INSTRUCTED ACR Y TO CLB AND MAINTAIN 5000'. I ISSUED THE TFC AT 12 O'CLOCK AND 5 MI AT 3500' AND TURNED ACR Y TO A 090 DEG HDG. BELIEVING THAT ACR Y WAS RESTR TO 3000'; I CONTINUED TO WORK MY OTHER TFC. IT WASN'T UNTIL THE C/A SOUNDED THAT I REALIZED ACR Y WAS CLBING ABOVE 3000'. ACR Y PASSED APPROX 1 MI S OF ACFT X AT APPROX 3800'.