
37mm ND4-64 (2-6 Stop) Variable ND Filter and CPL Circular Polarizing Filter 2 in 1 K&F Concept Nano-Xcel Series
SKU: KF01.1906
This thing is niiiiiice! High quality! And the packaging is A1! It’s just well thought out!
17/05/2025
This is an excellent quality circular polarizer and variable neutral density combination filter by K&F. I got the 77mm to cover most of my lenses by using step-up rings. The smallest filter size will be 52mm, seen in the photo. The filter is excellent for all it does and it’s reasonably priced. It’s much more convenient than separate filters; faster to use and less to carry in your bag. Also, this will work with some wide-angles that would be a problem when stacking multiple filters. The build quality of the filter is excellent. A leather storage case is included. There’s some very slight vignetting and color shift starting at 4 stops which increases with more ND filtration. That is expected and can be dealt with in post processing if desired. Image clarity and sharpness is not affected. This filter outperforms other CPL+ND filters I’ve used.
16/05/2025
This is a really nice design for us landscape photographers. A 5-stop variable neutral density filter with a circular polarizing filter built in. It’s all packaged in a single thin package, made from high-quality glass, that’s also scratch-resistant and waterproof. In the field, it’s easy to work with, very convenient, and no filter stacking is needed. It operates smoothly, just twist to adjust the ND or the CPL. The filter comes in a very nice case and is well-packaged. Overall, a great design that is an excellently constructed tool that should last you a lifetime (barring accidents or abuse).
15/05/2025
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.
14/05/2025
The putter on the frame comes in really handy. Honestly, I think that a lot of filters need something like this to make the experience of adjusting the filter much better. In the past, having to screw on two different type of filters on my camera seemed like a daunting task, and with this filter one of those steps is removed, so I'm grateful for that. I absolutely recommend this if you're looking to have both an ND filter and a CPL filter in one. It saves you a hassle!
11/05/2025
The product feels premium, the image quality is sharp depending on the lens you're using, overall it's very good, it does its job.
08/05/2025
The ND filter has improved my outdoor photos and videos. It allows me to reduce light without losing quality, achieving blurred backgrounds and smooth motion captures. Ideal for landscapes and brightly lit scenes. It's a must-have accessory for greater creative control. Highly recommended!
04/05/2025
I put this filter on my Brighton Star 50mm f0.95 and it is plenty sharp. The headshot shows this - shot wide open at f0.95. Yes, the polarizer turns a bit stiff, but may loosen up with use. On this lens, the filter makes the built-in hood unusable, but I don't mind - I think I will keep this filter on permanently.
01/05/2025
I am very happy with the quality that K&F filters offer, they offer excellent quality and functionality.
27/04/2025
This CPL+ND filter shows material and function quality. It comes with a nice box protector and some information. It screws easily into the camera. This filter is for my everyday and travel camera so I am always looking to travel minimalist and this is giving me that.
21/04/2025