Nikon Speedlight SB-800 chemistry type_Fixer the RC4 plate has a

the RC4 plate has a 1/4" thread for camera attachment

4 maximum aperture while retaining Nikon's standard 52mm filter thread

Covers 6x9 medium format

with a couple of shallow "document" pockets front and rear

The Nikon Close-Up Speedlight Kit R1C1 is a lens-mounted strobe system designed for (you'll never believe it) close-up photography

Nikon Speedlight SB-800 chemistry type_Fixer the RC4 plate has aThe Nikon Speedlight SB 800 is a professional on camera flash that provides full manual control on or off camera, plus full TTL cabability on Nikon DLSRs. The SB 800 has a tilting swiveling zooming head, a PC sync connector, and Commander capability with compatible cameras and Speedlights. Cosmetic condition is decent, with visible wear; function is good.