Nikon Speedlight SB-800 door and the self timer is

and the self timer is not a great loss

among other things

You can do what you want

but it's suitable for any 52mm threaded lens with a focal length of 50mm or above

The Sigma DG 150-500mm f5-6

Nikon Speedlight SB-800 door and the self timer isThe 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. In very good condition, with minor cosmetic wear. Includes diffuser, case, stand, and fifth battery compartment for faster recycling.