The circuitry of the Substrobe DS125 has been optimized for use with the latest digital camera models. The DS125 is fully compatible with both preflash and non-preflash systems. And for those remaining die-hards it still works brilliantly with all TTL film cameras including the Nikonos system. The Substrobe DS125 operates TTL when connected by sync cord to an Ikelite TTL housing, Ikelite TTL Adapter, or TTL film camera. Full, 1/2, 1/4 and 1/8 manual power settings can be used when connected by sync cord to either TTL or non-TTL systems. Sync cord and strobe arm included. CALL: HARRY 702-510-4374 it's NOT ok to contact this poster with services or other commercial interests nevada