This filter was purchased for a 12~60mm Panasonic lens mounted on an Olympus OM-D E-M5 MKII. It was difficult to screw on because the first thread was difficult to engage properly despite handling the notches milled on the ring. Thinking it had it fitted, it was unpacked when I took the sun visor off. It is therefore important to check that it is tight and fully screwed. Otherwise nothing to complain about, it protects the lens and filters the light

I own a Panasonic Lumix G85 camera that came with a 12-60mm F3.5-5.6 lens. I really like both the camera and the lens — they're compact and the lens is excellent. Since I occasionally shoot outdoor shots and videos, I ordered the K&F Concept UV filter for those situations and to protect my lens. The filter arrived quickly and out of the box I received the UV filter, a lens cap and a lanyard. Installing it on my camera's lens was very easy and I can already see an improvement in my photos and videos. Overall, I think this is a must-have accessory for the G85 with the kit lens and I highly recommend it.

I love this variable ND filter. I'm using with a Canon R6 and a Canon RF 35mm F1.8 lens. Fit and finish is impeccable and and it's easy to rotate due to the tabs set at 180 degrees on the filter. Most importantly, I'm not detecting an cross-hatching, which is a common phenomenon on variable ND filters. Also, the lens cap fits securely on the filter, but you can't use a lens hood when using the filter. That isn't a big deal to me, but it's worth noting. This filter has stayed on the lens since I received it. Couldn't be happier - highly recommended. 5 stars.

Very good value set of filters. Ideal for for my Panasonic FZ1000 camera. The ND filter is especially useful for video as the camera doesn’t have one built-in. Recommended.

Very good Fitleo ND and filter holder system, I use it with a Tokina of 12-28h, the results are quite good

I'm comparing this item KF's regular Nano filter. At the same settings on my Panasonic 85mm f/1.8, I can see more detail coming out of my lens on this Pro filter versus the regular Nano Filter.Since I love the sharpness of the 85mm, I'd much rather use the sharper filter. It's probably not a big deal to those who aren't pixel peeping but I can definitely see a difference in the hairs and I really like this filter.

I love this variable ND filter. I'm using with a Canon R6 and a Canon RF 35mm F1.8 lens. Fit and finish is impeccable and and it's easy to rotate due to the tabs set at 180 degrees on the filter. Most importantly, I'm not detecting an cross-hatching, which is a common phenomenon on variable ND filters. Also, the lens cap fits securely on the filter, but you can't use a lens hood when using the filter. That isn't a big deal to me, but it's worth noting. This filter has stayed on the lens since I received it. Couldn't be happier - highly recommended. 5 stars.

The filters fit my Panasonic camera perfectly. They make a very well made and durable impression. I am sure that with careful use and proper care they will serve me well and for a long time.
I think this filter set is a good buy and value for money.