I usually use fixed ND filters with a separate CPL but my filters went missing on a shoot. Instead of replacing them all, I decided to try this combo filter. I had mild expectations, and it has exceeded them. I thought it would be thick and possibly vignette. It is actually thin and even when stacked with a UV filter no vignette. The clarity and build are exceptional. It also comes with a really nice filter case. I do have one criticism on the design. There are 2 finger tabs. I figured on was for the VND and one for the CPL, but they are both for the VND. To adjust the CPL you have to turn rim of the filter, which is hard to do without moving the VND. A finger tab on the CPL would be helpful.

very sturdy and tall! but beware: you can pinch your finger in the leg...

Easy to install and use. Feels very durable. And I love the way you can access it with your finger, an app or a real key.

I appreciate the simplicity of the product. The fingerprint reader doesn't read every time because your finger has to be in exactly the right place to work, and it required some modifications to the door to get the mechanism up far enough to engage the door frame, but otherwise it was easy to use.

Simple enough and with really great features. The only criticism I have is that it sometimes doesn't read prints well, even though I put in many positions of the same finger. Otherwise easy to install and meets expectations

The part is great...
Our treasure is back where it belongs, on my wife's finger...

Overall - great product well worth the money, with just a couple of fat-finger issues.

When you open the incoming package, you will find that the packaging is very high quality. The brand is very careful in presenting their products and the materials are of high quality. The filter holder and adapter ring are metal and the filter holder has a spongy area whose function is to seal with the filter without letting light through. Once the filter holder is attached, it is easy to move. crtsal 100x100 quality is very good, with highly polished edges. The filter holder has two slots for square filters, but the advantage is that the ring screwed on the lens can be screwed with another round filter, for example a polarizing filter. I think the picture is very good. As with the brand's round filter, the sharpness is not lost, the color cast did not catch my eye, anything that can be edited during development is appreciated. The ND1000 filter included in the kit enables long exposures in strong light. The sample photos are photos taken on a cloudy afternoon with and without a filter. Those with filters were made with an exposure time of 20 seconds.