Spekular Light Blaster Nikon to Canon EOS Adapter

Canon to Nikon Lens Adapter The Blaster works with Canon lenses right out of the box, if you want to use it with Nikon Lenses, this adapter lets you control the aperture of the lens and make sure it stays open for maximum light output. (Turns out that Nikon has the only lens in the world where the aperture is at its "closed" setting when not connected to a camera).