Product
K&F CONCEPT 49mm True Color & Ultra Low Reflectivity ND2-32

Review
I really like the quality and performance of this ND filter. It fits my 50mm lens (49mm diameter) perfectly. The side paddle make it very easy to make granular adjustments to brightness to allow you to "slow down" your lens to help with brightness or motion (like water). The case is great, though overly large (takes up lots of room in your camera gear bag). I can't wait to give it a more complete workout for upcoming trips.

Recommendation
I do recommend this lens, super high quality.

The Good:
-Very easy to use
-Fits perfectly
-Reduces yellowish hue

The Bad:
-None

The Bottom Line:
I’ve been taking more photos with my Canon Rebel T7 and this K&F lens filter is great. Since I take a lot of pictures in the day under less cloudy skies, this filter really reduces the yellowish tone from the harshness of the light. The lens filter fits perfectly and is very easy to use. Overall, I would recommend this lens filter for its fit and performance.

To The Point
High-quality feel, smooth adjustment, and clean optical performance.

My Opinion
This K&F Concept ND2–32 filter feels very well made right out of the box. The metal frame threads smoothly onto the lens, and the rotation is nicely dampened — firm enough to stay put but easy to adjust. I tested it on a 49mm lens for outdoor shooting, and it handles glare and brightness exactly as expected without introducing noticeable color shift or loss of sharpness.

The “True Color” claim holds up — tones stay natural, and there’s minimal vignetting even at wider focal lengths. The multi-coating does a good job repelling fingerprints and smudges, which is great for quick field adjustments.

– Pro: Smooth variable range (ND2–32)
– Pro: No color cast or distortion
– Con: No hard stop at the minimum/maximum end

Pro Tip
Always rotate slowly near the darkest setting to avoid the “X” pattern that can show up on extreme adjustments with any VND filter.

My Verdict
I’d give this 4 out of 5 stars for build quality, optical clarity, and smooth control.

It’s a solid piece of gear that performs like a higher-end filter — a great choice for travel, landscape, or video work without spending big-brand money.

I hope this helps!
Cheers,
Straight Shooter

Not only is this filter solid, but it comes with a great case to keep your filter safe.

The ND change is fantastic and I wasn't really seeing any weird vignetting or anything strange from the filter both in the edges nor center like some other ND filters.

The filter also has a little handle to turn the filter to adjust exposure.

Super happy here.

K&F claims true color but there is still a color shift. It's minimal though just a bit cooler. Fixable in post. You could even set up a camera profile for ND images. Color shift is kind of expected with variable ND's though. I haven't come across one that doesn't. Although I haven't spent crazy money on them. I do like the feel of the pusher but there's no notch for each stop. It's just a smooth feel throughout. It never "clicks" into place. There are indicators on the filter edge though. If you have good eyes, you can kind of see the right spot while using the view finder. In between stops you get a slight X pattern forming. However, this will be harder to see on a screen in bright sunlight. I have one perplexing question for K&F. Nice case but why so big for a 49mm?

I'm using this on my RX1RIII and it's simply perfect! It doesn't add much weight to the camera so I don't mind keeping it on there all the time, it has minimal to know perceivable vignetting, and most importantly, no dreaded X-pattern. It doesn't shift colors in any crazy directions making post processing of stills and video easy. If you're not wanting to spend Nisi/B+W type of money, these VNDs from K&F are a fantastic choice!

I tried out this filter on an E-mount Tamron 150-500mm lens and was quite impressed. On an overcast day with the camera set at 150mm, F9 and ISO 400 for all pictures, a filter ND setting of 2 required a shutter speed of 1/3200 for the correct exposure. With the filter set at ND 32 the shutter speed was 1/320. There was no notable shift in any colors and no other aberrations introduced including vignetting.

The build quality seems very good, with a super smooth feel when changing the ND. The action is so smooth there is really no need for the massive orange tab to adjust the filter. Fortunately, the big orange tab can be removed with a Torx bit, which I did to allow using the lens hood for my Tamron (see photo) with the filter on. One last note, threading the filter onto the lens feels too tight and the filter does not easy spin on - giving it kind of a cheap feel. But overall, I an very happy with the filter.

I love K&F gear and already use their magnetic Nano-X system on my Sony A7IV. For quick shoots in the sun where I don’t want to carry the whole magnetic kit, I picked up this 67mm variable ND and it doesn’t disappoint. The optics are excellent, with smooth adjustment from ND2–32 (1–5 stops), and the aluminum ring with the orange slider makes it easy to dial in the right setting without fuss.

What really stood out is the included case — slim, sturdy, and perfect for tossing 1–2 filters inside (I use a microfiber cloth as a divider). It’s a smart design that makes carrying filters simple when traveling light.

My only gripe is the pricing strategy. At $115 it feels steep, especially since it’s often discounted to around $80. That said, the build quality, coatings, and true color performance live up to K&F’s reputation. If you want a reliable VND filter with excellent image quality, this is a great choice.

For expanding your photography creativity, the quality, functionality, and adjustment are on-point. Seems clear, polarizes well, and minimal vignetting. A little pricey, but it's a clear winner over some cheaper ND filters I have.

K&F Concept keeps proving why they’re such a reliable brand for affordable, quality gear. This 82mm VND is smooth, accurate, and performs like a filter that should cost a lot more.
In my test shots, I saw no “X” cross pattern, no dark edges, and no weird color cast. That’s a huge win if you’ve ever fought with cheaper filters that ruin your shots. The large thumb handle is another nice touch—easy to find and adjust without taking your eye off the subject.
Overall, this is a well-built, dependable ND filter that’s perfect for both photo and video work. If you need a VND that just works without surprises, this one’s a solid pick.