100mm Handheld Motion Blur Filter Optical Glass Prism Special Effect Camera Lens Filter Nano-Basic Series

this filter is cool for using either still photography or moving image / video. Easy to use with a "brass knuckles" kind of hand hold. Comfortable size and fits in your pocket or side pouch easily. Seems well built and durable but don't drop it! Seems like a good value. Image quality is clean and satisfying. See test images attached.

Constructed well. While the effects of the filter are subjective to the artist, objectively it does the job it's supposed too, and it's made well to help achieve the results either with mounting it to a magic arm for consistency, or hand held.

Good for video, good for photos. I won't use it all the time, but it's neat to mess with. Comes with a heavy duty carry case also.

K&F has really stepped it up with this new line of handheld lens filters, and I’m genuinely impressed. The design includes a 1/4" thread so you can mount it to an arm and hold it in front of your lens, very clever. I don’t have the full rig yet, so I’ve been experimenting with it handheld, and the results are still fantastic. It creates a soft focus or motion blur effect that adds a unique, dreamy character to the image, perfect for creative portrait work.

This filter has opened up a whole new creative avenue for me. It essentially brings some of the visual magic you’d normally add in post-production right into the shoot itself. That alone makes it a powerful tool for photographers looking to explore new styles and techniques.

Highly recommend this filter and honestly, the entire line from K&F. They’re pushing boundaries and making creative tools more accessible.

The prism comes in a high-quality, rigid protective case with a Velcro closure and a compact design. From the first moment, it's clear this is a product designed for discerning photographers.

The glass is clear, clean, and flawless, which is crucial for optical effects without unwanted distortion. The metal handle provides a firm grip when using it with one hand, even during long sessions.

Ideal for creating refraction effects, split lighting, or image duplication, the prism allows you to add an artistic and professional touch to photos or videos without the need for digital editing. Perfect for creative portraits, nighttime lighting, and abstract reflections.

Yes. If you're looking to add a creative edge to your photos, this accessory is very useful. It works especially well when combined with strong or directional lights.

An excellent tool for photographers who want to experiment without the hassle of post-production effects. Very well designed, durable, and practical.

It's a handheld filter; basically, you hold it in one hand and your camera in the other, and you place the filter in front of your lens to create an effect. It takes quite a bit of practice at first!

It's very high quality and rather "heavy," and it also comes with cleaning cloths and a nice pouch. To be honest, I struggled with it at first, but I quickly understood its usefulness, especially for wedding photos if you're looking for that kind of effect.

Now, as for the price, it's a really niche product, so it's hard to judge, but it's definitely high quality.

I think it's good for photographers to try new things and experiment - it keeps our creativity fresh. That's why I got this filter from K&F and it definitely is different from other filters I use. It's handheld instead of screwing on the front of the lens and it's a half circle which allows for some interesting effects on the image. I did some test shots with my little friend that you can see in the attached images. The quality of the filter is pretty good considering the price. Honestly I'm not sure how I would use this filter yet, but I'm glad I have another tool in the kit when I'm looking to try something new. I do wish they had included instructions on how to use this filter to achieve a desired effect. It's just trial and error without having used something like this before.

Here's a short review of my experience with the "K&F Concept B-Series Motion Blur Filter-2".

It arrived securely packaged in a product box and a storage bag.

The 100mm version makes a high-quality and professional impression right away.

For my test, I used a small telephoto zoom lens with a tripod base, allowing the filter to be attached to the lens using a "magic arm". This allows for more consistent results than holding the filter in front of the lens by hand.

I experimented a bit with the filter in various lighting conditions and was quickly able to achieve some usable results in both still life and portrait photography. This makes it easy to add some playful effects to photos.

Of course, you could also generate and incorporate such effects into your photos using Photoshop (or alternative photo editing tools) or AI. But as a photographer, I enjoy the results I can achieve by incorporating these kinds of creative tools directly into my photos, without having to sit down at the computer afterward. Maybe I'm a bit old-school, but that's precisely what makes photography so appealing. ;)

Here's a photo—unedited—straight from the camera, taken with the effect filter.

In conclusion: Good filters come at a price, and the K&F Concept filters aren't cheap. However, anyone who still enjoys the physics involved in photography can have a lot of fun with this filter set. I still find the nearly €40 price tag a bit steep, though, since the 100mm set would cost me almost €160. That would be a bit too much for me. I'll wait and see how the price develops and whether I end up buying more...

I’ve been using this K&F Concept handheld drag filter for a few weeks now and I’m really happy with it. The build feels solid and the glass is clear, no weird color casts or cheap haze like I’ve seen with other filters. It’s easy to hold in place while shooting and gives me that smooth motion blur effect I was looking for. Works well both for video and long exposure photography.

It’s also lightweight and portable, so I can toss it in my bag without worrying about it taking up too much space. The results look professional, and it honestly makes my shots stand out way more. I was suprised at how simple it is to use and how quickly I was getting cool results. I’d definitley recomend this drag filter to any photographer or videographer who wants to experiment and add some creative flair to their work.

I recently selected the K&F Concept Handheld Drag Filter, and I'm genuinely impressed with its ability to add unique effects to my photography. This filter is specifically designed to create motion blur effects by dragging it across the lens during an exposure, providing a creative tool for both stills and video.

**Design and Material Feel:** The filter feels solid and well-constructed, which I especially appreciate. The optical glass appears high-quality, and the handle provides a comfortable and secure grip. The multi-layer nanometer coatings are a good touch, offering waterproof, scratch-resistant, and oil-proof properties, making it resilient for various shooting conditions.

**Ease of Movement and Use:** Using this filter is straightforward. The handheld design allows for precise control over the direction and intensity of the drag effect. It takes some practice to get consistent results, but the manual control offers a lot of creative freedom that fixed filters can't replicate. I found it easy to experiment with different speeds and angles to achieve varied looks.

**Sturdiness:** The filter itself feels robust, and the handle attachment is secure. I don't have concerns about it breaking or flexing during use.

**Room for Improvement:**
* While the handheld design is great for creative control, it does mean you need one hand free to operate it, which can be challenging if you're also trying to adjust camera settings simultaneously.
* The effect can be unpredictable at first, requiring some trial and error to master.

### Tips & Uses:
* **Creative Motion Blur:** The primary use is for creating dramatic motion blur in specific areas of your image, like streaks of light or blurred backgrounds with a sharp subject.
* **Abstract Photography:** Experiment with intentional camera movement (ICM) while using the filter to produce highly abstract and painterly images.
* **Portrait Photography:** Use it to create a soft, dreamy background with a sense of motion around a sharp subject, giving a unique dynamic to portraits.

As an exclusive contributor to a prominent stock media agency with 25 years of experience in freelance photography and videography, I offer informed and professional opinions of camera and video equipment.

I will update this review if anything changes within 1 year. A 5-star rating indicates the product meets my expectations for its purpose.

This K&F Concept handheld filter is a true must-have for photographers looking to explore new creative possibilities. The concept is simple: part of the image remains sharp, while the other is blurred with a motion blur effect. It's ideal for adding an artistic touch to your photos without having to go through lengthy post-production work.

The build quality is excellent. The filter is made of K9 optical glass, resulting in very high transparency and good color rendition. There's no color shift, which is a very important point. The glass is strong and durable. The semi-circular handle allows for easy gripping and flexible adjustment. You can move it in front of the lens to find the desired effect.

I tested this filter on a portrait, and the result is very cinematic. The bokeh effect is clearly visible and gives the photo interesting depth. It's a tool that requires a little practice to master, but the possibilities are endless. The three included microfiber cloths are of very good quality and keep the filter and lenses clean. It's a nice little extra.

This filter isn't for everyone, but for creators looking to break away from the ordinary, it's an excellent investment.