Just received & tested ASAP: photos taken with and without CPL filter. For my camera Canon Powershot SX40HS I strongly recommend the 52-58 step-up adapter the bayonet style not the threaded one (I purchased and tested both): It's easy and faster to install/remove. Once fixed the CPL on the 52-58 step-up adapter I'll leave them together always. This will prevent thread cuts and misalignmentsCPL usage - It makes the difference even I was expecting a little bit more cutting of the reflexions but for the money spent it's very good. Tested at 90 degres (as all indicate) vs sunlight direction and the stones are visible in the pond due to reflexions cut at water surface. As you increase the angle the more effective it is: it's doing the job! At the beginning you need a little experience till you find the max open and max closed positions (CPL ring rotation) then you play with the ring for effects. I'm looking forward to enjoy this CPL filter furthermore for better pictures.

It works pretty good. It's made by Tiffen. It is 67mm. It is a circular polarizer filter. I like it.

I just received these today, within the last hour or so, so this isn't a thorough field tested review. I did however take sample shots of a door with a calendar hanging on it. I used my Canon 17mm-40mm F4 lens at 17mm. I took one shot with no filter that was at about 17.5mm since I hadn't realized that I had slightly moved the zoom ring. I then corrected that error and then took a picture with the 3 stop, then 6 stop, then 10 stop.After I was finished I looked at the images on my computer. Vignette was more apparent with each increase but I was expecting that with this lens. I should mention that to mount a 95mm filter on a 77mm lens I used a step up ring by the same manufacturer.The focus and image quality did not appear to be affected, even zoomed in at 200%. One thing I observed is that I need to slightly over expose according to my light meter in the camera to keep the resulting images from being just a tad dark.After I corrected for exposure, my error, not the filters, the images were essentially identical. I the future I will use the "Long Exposure Calculator" app.As a hobbyist I am very happy with the results.

Got the Gobe Filter Kit 72mm MRC 16-Layer: UV, CPL Polarizer, ND8, ND1000 about a month ago. Since they arrived it's done nothing but rain. Eventually got out to try them and I have to say they did not disappointed. I am very pleased with the the photos as there is no colour cast like I was getting on the cheaper plastic ones. The only slight problem I got was when I knocked the lens and couldn't get the filter off. Easily solved by getting a small knife and running it round the filter where it screws onto the lens, pulls the threads even with no damage to either lens or filter... Happy Days!!

I have enjoyed using the 67mm filter. It does what it's supposed to.

One of my all time favorite filters will always be the polarizer! I bought this one for my new 67mm lens and it works like ones I had for my 58mm kit lens. Another good purchase!

The filter looks and feels good, except when I got mine. The locking ring wasn't tightened down all the way. I was lightly wiping the lens and I heard a slight ripping/tearing sound and the glass lens can rattle inside the the frame. At first I thought it was glued down and I had ripped the glue off. I took a closer look and saw that you can tighten down the locking ring by using a small flathead and turning the ring with one of the 2 notches along the ring. After that, it was sturdy and no more problems.The outside of the ring is threaded to allow use of multiple filters or lens.

The thing I like the most about this kit is the ability to use on different lens size. Comes with 8 adapter rings (including 49mm, 52mm, 58mm, 62mm, 67mm, 72mm, 77mm, and 82mm adapter rings) so you can use the ND filter with different camera lens sizes. I have used on my Canon EOS R10 49mm and my Nikon D90 67mm. I am new to using filters, but this is a great starter kit.