Bioluminous Custom Gold Edition Front Lens Cap For Nikon 600mm F/4 Lenses (Except FL ED VR)

Okay, this is a fun one.

It's a custom, gold edition front lens cap for your massive Nikon 600mm f/4 lens.

If you've got the big glass, you might as well make the cap look cool too, right?

It fits lenses with the Nikon S fitting, specifically for the AF-S NIKKOR 600mm f/4 models, but just to be safe, it's not for the newer FL ED VR versions.

It's made by Bioluminous and it's brand new.

It's a simple, stylish way to protect that front element and stand out a little.

It's a front lens cap, does its job, and looks good doing it.