I am currently looking for ND and Grad ND filters for my camera for long exposures. Im a beginner and new to all of this and im slighty confused. Question is

Lets say i bought a Cokin P series filter pack with a holder, can i use that holder to use other branded filters which aren't Cokin?

Or does the holder and filter need to be the same brand?

Thank you!

  • \$\begingroup\$ Cokin "P" series is 84mm wide, which is kind of an oddball size. Most of the non-Cokin filters available in 84mm are generic and typically lower quality. 100mm filters are much more common, which is the Cokin "Z" series. There's a fuller range of options, both major-branded and cheap generic, in 100mm than 84mm. If you want to use filters with wider angle lenses, you'll need larger than 84mm for most any lens 24mm or shorter. There are generic/off-brand holders as well, and some aren't too bad. \$\endgroup\$
    – Michael C
    Apr 27, 2020 at 13:36

1 Answer 1


All square filter holders function about the same way: there is the holder and some sort of spring/tension plate holding the filter into the slot in the holder. I use a Formatt-Hitech holder which looks like this:

enter image description here

You can see how the plastic curves inward and it is flexible so that you can slide a filter in and tension holds it in place. This concept applies to most filter holders.

So, you can use any filter that fits the width of your holder as long as it also fits the depth of the retaining slots. In the image above, you can see that the slot is 2...maybe 3mm widest. I could use a filter that fits the width of the holder as long as it is no more than 3mm thick. Any thicker, and it may not fit into the holder - forcing this could damage your filter, holder, or both.

It is generally safest to go with the manufacturer's filters, but as long as the brand you are buying fits in length, height, and depth, there is no reason it wouldn't work.


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