406 Technical NotesNikon’s advanced Creative Lighting System (CLS) offersimproved communication between the camera and compatibleflash units for improved flash photography.CLS-Compatible Flash UnitsThe following features are available with CLS-compatible flashunits:The Nikon Creative Lighting SystemSB-5000SB-910SB-900SB-800SB-700SB-600SB-500SU-800SB-R200SB-400SB-300Single flashi-TTLi-TTL balanced fillflash 1 ✔ ✔ ✔ ✔ ✔ — — ✔ ✔Standard i-TTL fillflash ✔2 ✔2 ✔ ✔2 ✔ — — ✔ ✔qA Auto aperture ✔ ✔3 — — — — — — —A Non-TTL auto — ✔3 — — — — — — —GN Distance-prioritymanual ✔ ✔ ✔ — — — — — —M Manual ✔ ✔ ✔ ✔ ✔4 — — ✔4 ✔4RPT Repeating flash ✔ ✔ — — — — — — —