On 15/01/2021 14:47, R D S wrote:

"55 mm 0.45 X Macro Photographic Fish Eye Wide Angle Lens for Nikon D70"

it has a thread on it.

Do I simply need one of these?

https://www.ebay.co.uk/sch/i.html?_f...89162&_sacat=0


I think it might be intended to fit on the front of another lens (the
standard lens that would have come with the camera originally).
:facepalm:

I'll send it back. And probably end up opening a dispute for a refund.