CPL filter

I dropped and cracked my CPL filter and looking to purchase a new one and looking for recommendations. The range from $10 - $200
So it's confusing.. I mean it's a CPL filter can there be that much of a difference in them?

Good question and I don't have the answer.... but had the same question some time ago and found a website that reviewed a bunch of them, and a Kenko that I had scored close to the top. And I asked myself how a middle brand like that could be so good. And also why a few square inches of flat glass can cost so much compared to the highly advanced curved elements inside a lens. Count me as a doubter regarding filters of any kind.

Anyway, I used the Kenko in a shoot and it seemed to be fine.

Generally speaking, look for 'multicoated' as a MINIMUM, which transmits 97% (ignoring the light reduction due to the polarizer). There are single coated and double coated filters, which transmits only about 93% of light. 'Super multicoated' filters claim 99.7% (or more) light transmission.

The 0.3% to 8% that is not transmitted thru the filter will bounce off the air-glass interface and result in contrast reduction and somethings real reflection...higher the percentance that is bounced is BAD! ...0.3% is not enough to worry about except in the most light challenging situations, when pros will be sure to remove them.

Highly respected filter brands include Hoya, B+W, and Heliopan. Walk past Tiffens, their coatings are generally not great.

Here is an example of the various levels of coatings under test. https://www.kenandchri​stine.com …pment-Tests/Filter-Tests/

Here is another test, this one of https://www.lenstip.co​m …_Results_and_su​mmary.html
Note that this test also considers the effectiveness of the polarizing element, the main purpose of the filter you are interested in getting.

I started with the B+W Kaesemann and have added the Breakthrough Photography 4x CPL to the bag and been quite happy with both.

https://www.bhphotovid​eo.com …_xs_pro_mc_kaes​emann.html
https://breakthrough.p​hotography/pages/nd-buying-guide (linked to buying guide given the variety they're currently stocking and varying prices therein)

I use a B+W Kaesmann on my 77mm lenses and a HOYA Multicoated CPL for my 52mm lenses. Both are very nice.