Nikon WT-4A avenger and a constant f4 maximum

and a constant f4 maximum aperture

Please note

For lenses with 49mm filter threads

with very minor cosmetic paint wear

36x magnifying eyepiece for select Canon cameras

Nikon WT-4A avenger and a constant f4 maximumThe Nikon WT 4A is a wireless interface for Nikon D3, D4, D300, D700, D800, and, D7000 cameras. With Nikons Camera Control 2 software (not included) you can connect your camera to a PC for remote shooting via either WiFi or Ethernet. As you can see from the image, this is not a tiny device, and its mode of operation is definitely less casual than modern wireless systems, so you may want to look into what it takes to get this thing to do what you want.