K&F Concept ND2-ND32 Neutral Density Filter for Canon EF 100mm

Question

I am not quite sure whether this filter:
K&F Concept ND2-ND32 Neutral Density Filter
will fit this lens:
Canon EF 100mm f/2.8L Macro IS USM
The thing that I am not quite sure is here in the filter description:

Note: This filter is made of high-quality aluminium with 52 mm screw
thread, and only for a lens of 52 mm diameter. Please measure the
diameter of your camera lens before placing your order.

Diameter of the lens is 67mm, just like this filter diameter. So what about 52mm 'screw thread'?

scottbb · Accepted Answer

For that particular filter at Amazon, it appears K&F Concept probably just provided the exact same "52 mm" descriptive text, regardless of which filter diameter is chosen.
The confusion here isn't a filter or lens thing; it's merely an example of technical issues, misunderstanding at the supplier end, or laziness in providing the correct descriptive text, with regards to e-commerce.
If you order the 67mm filter, it will fit your lens. If you order a 67mm filter but are delivered 52mm, then you were sent the wrong one through no fault of your own, and you should return it to Amazon and complain about the seller's product page.

Update: This issue might only apply to the English-language version of the filter's page(s) at Amazon.de. At Amazon.com, the last bullet point's text corresponds correctly with the filter diameter selection choices (37mm / 40.5mm / ... / 52mm / 67mm / ... / etc). Example for the 67mm filter:

【NOTE】This Filter kit is compatible with all 67mm lenses. Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol.

Bob Macaroni McStevens · Answer

A 67mm diameter lens will require a 67mm diameter filter or larger with a step-up ring or other type of adapter.
A 52mm filter will fit 52mm threads on a lens or another 52mm filter or an adapter with 52mm threads (such as a step-up ring for a smaller diameter lens).
There are step-down adapters as well but they are likely to produce vignetting, so mostly people find step-up rings a better approach.

K&F Concept ND2-ND32 Neutral Density Filter for Canon EF 100mm

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