Fits a 77mm lens filter thread with no problems. Coated optics. Seems not to cause vignetting or degrade image quality at all. Very happy. Can stack another 77mm filter on just fine as well so no issues with front thread either.

This is my second ND1000 filter from GOBE, now I bought a 77mm for my tokina 11-16mm lens I am a landscape photographer, The experience with GOBE products is great the filter was build with high quality and is easy to attach to the lens. The filter came with a metal housing for protection. Great choice.

Fits my 77mm Dia lens but that's about the max your going to get! Little more! Buy again sure.

Great. I liked it. Original Lens Cap for Canon 77mm. Made in Japan

After reading many positive reviews ordered "Hoya 77mm HMC UV(c) Digital Slim Frame Multi-Coated Glass" Filter for my sigma 17-55mm f/2.8 lens. Its made in Philippines. I had also ordered "B+W 62mm Clear UV Haze with Multi-Resistant Coating (010M)" filter for other sigma (18-250mm) lens. B+W definitely felt more heavy/nicer built than this filter even though 77mm filter is larger. B+W cost lot more money :( Again this is simply based on just physical comparison not based on picture quality comparison. With this said, i am happy with this filter.

I am using this 77mm filter to protect my wife's Nikon 24-120mm VR lens on her D750. The fit is perfect.The filter appears to be of high quality, and they even supply a cleaning cloth.

The threading of the filter for the lens cap or threaded hood is not 82mm. I just purchased an 82mm lens cap and hood only to find out it is too large. Looks more like it needs to be a 73mm to 75mm thread. The 72mm thread for my lens is correct, however, and works well.Update 11/4/2020: Ordered a 77mm to 82mm step up ring. The ring fits and means that this is a 77mm thread and not an 82mm thread for the cap and hood. If you buy this filter, you will need a hood and lens cap for a 77mm thread.

It really is a really fantastic Gobe NDX 77mm filter, when you take photos they are really very beautiful, even the very clear and beautiful color and contrast are very happy for this filter, excellent also fast and punctual seller.