The Nikon R1C1 Close-Up Speedlight Commander Kit is a Unique Wireless Speedlight system kit for fully automatic Close-up photographic exposures. The kit comprises of two SB-R200 Remote units attached to the lens and a SU-800 Commander unit attached to the cameras i-TTL metering system. All exposure and triggering communication is carried out using infra red wireless communication. The kit includes adaptors for frontal lighting, filters and adaptor rings for the most popular Nikkor lens filter screw threads. Additional SB-R200 units or SB-800 and SB-600 units can also be controlled by the SU-800 to offer the ultimate Creative Lighting System flexibility either indoors or in the field.