Thanks for the suggestion. Has anyone tried it with an ES-52, I have an AI converted 45mm GN Nikkor-C coming over from America and to buy the hood it would nearly cost the price I paid for the lens, while an ES-52 clone is pennies.
I could buy another lens or two the prices people are charging for this hood.
I had £7.50 on my Amazon gift balance so I bit the bullet and ordered an £7.30 ES-52 clone and it looks fantastic on this lens even more than the original even the same style metal ribbing.
Through the view finder I see no vignetting.
Saved me a proper fortune on the original hood.