The package includes:
- 1 x 72mm filter
- 1 x filter case
- 1 x cleaning cloth
- 1 x instruction leaflet

I won't go into the technical specifications since they're already extensively covered in the product description, but I'll share my experience and impressions.
I immediately tested this filter, taking advantage of the lighting conditions of the last few days. It's an "art"/"creative" filter, meaning it tends to create distinctive blurs and golden tones in shots.
The product is essentially a mist filter with the addition of gold particles that, when light passes through them, warm the image to a golden color, not the classic yellow-orange color.
The characteristic of the mist is to create a "fog" effect, which is accentuated in the highlights, where we have a sort of halo as if there were a light fog in front of the light source. At the same time, we have a slight loss of detail due to a sort of softness that is evident in the light colors until it almost completely fades in the contrasting or black areas. This is certainly not a problem or a defect, but rather its main characteristic, since it can be used to generate excellent highlights without having to go through post-production.

However, I found the use of the filter exceptional in the presence of LED lights shortly after sunset, as it creates a sort of very nostalgic image, where the LED lights take on the connotation of a softer light thanks to the halo that is generated, which is very reminiscent of the effect of neon lights. Furthermore, thanks to the golden cast provided by the filter, it pervades an overall warmth reminiscent of some very popular films of the '90s.

The filter is of excellent quality in terms of materials. With a Sony 18-105 I didn't notice any vignetting at minimum zoom, and the filter doesn't suffer from lens flare (as often happens with filters and artificial lighting).
If from a photographic point of view it's an excellent artistic filter, in video it's more than excellent. In videos it really manages to give the best of itself. It gives that retro touch that is clearly present in bright scenes and almost disappears in dark scenes, and we can play with this to create certain "vibes" during recording.

In conclusion, it's an excellent artistic filter, which, when used in the right scenario, gives us excellent effects. My rating is a full 5 stars.

As a professional photographer, I'm always looking for little tricks to soften the "overly sharp" and sometimes clinical look of digital photography. I mounted this K&F Gold-Mist filter on my 85mm lens to see what it could do, especially for portraits and creative street photography.

Frankly, I'm thrilled with the results. Where a classic Black Mist filter simply softens the image, this one adds a really flattering golden warmth to the skin. On my 85mm, it creates an almost dreamlike atmosphere without sacrificing sharpness. Details are preserved where they should be, but the highlights are just the right amount of soft and diffused.

It's the perfect tool when you're stuck and want to experiment with new aesthetics on the fly, without spending three hours in post-production. The build quality is excellent: it screws in perfectly, it's slim, and the included cleaning cloth is a welcome bonus. I really love how it looks on light sources in the evening; it gives an instant cinematic look that makes all the difference.

In summary:

✅ Pros:

- A beautiful and warm "glow" effect.

- Superb glass quality, no strange reflections.

- Perfect for creative work and portraits.

- Easy mounting on professional lenses without vignetting.

❌ Cons:

- The effect can be a bit strong if you already have very yellow light.

Requires a little practice to get your exposure right.

Hope you found this review helpful

So I put together a little still life to show the difference between A) No Filter, B) another brand's 1/4 black diffusion, and C) this gold gold diffusion filter.

The first thing to note is that the difference between the nothing and the black diffusion is massive, of course, but the difference between the black and the gold diffusion is much more subtle. You'll notice that the 1/4 gold diffusion has a slightly stronger blooming effect that 1/4 black, but also the light scatters further and because of this there is less contrast overall. I wouldn't say its better or worse, this may or may not be what you want. I would also note that despite the gold particles the colour of diffused light is overwhelmingly the colour of the source light, not just some gold colour cast over the whole image. Put a blue light in the frame and it will diffuse a little bit of blue throughout.

Construction wise it is fairly premium, with a nice grip to it. It is aluminium, not brass.

Overall I'd say this is a 5 star example of a gold diffusion filter and if the subtle difference in look is what you are after then this might be for you. I would say though if you have no diffusion/mist filter at all though I'd certainly start with a basic black diffusion filter that maintains more contrast then check out the subtle difference between it and a gold diffusion filter and figure out if it's worth it.

As a photographer, I'm always on the lookout for filters that add character without compromising sharpness, and the K&F Concept Gold Diffusion Filter (67mm) has proven to be a very interesting addition to my creative kit.

I've primarily used it for ambient portraits and harsh sunset light, and the golden-toned diffusion effect really does soften the highlights beautifully, creating a warm, almost cinematic atmosphere without losing any shadow detail. Unlike a simple soft filter, this one maintains enough contrast to avoid a "smooth" look, instead giving it a smooth and elegant texture.

The build quality is solid: the ring doesn't introduce vignetting at standard focal lengths, and the coating is scratch- and fingerprint-resistant, which I appreciate when I'm frequently mounting and dismounting filters during outdoor shoots. I also noticed that the gold finish provides a warmer tonal transition that works very well for natural scenes or golden hour light.

If I had to point out one area for improvement, it's that the effect is moderate, so if you're looking for a very pronounced diffusion, it might fall short. However, for portrait, lifestyle, or landscape photography with soft light, it performs very professionally.

Lately, I've been experimenting with different filters to give my photos and videos a more distinctive look, and I have to say this filter has definitely changed the way I work, especially when I want to achieve that warm, dreamy evening atmosphere typically seen in films or more polished productions.
The first thing I noticed as soon as I mounted it on my lens was the build quality. The glass is really well-made, and you can immediately see that this isn't your typical cheap filter. The 28-layer coating isn't obvious to the naked eye, but reflections are minimal, which is crucial when working in challenging lighting conditions.
I tried it on an 85mm T2.1 FF, and the effect it produces is interesting. It's not simply a filter that warms the tones, it adds a subtle diffusion to the highlights, creating a dreamy effect, and—very welcome—without completely losing detail. I tried it for both portraits and some more narrative video shots, and in both cases the results exceeded expectations.
One thing I particularly appreciate is that the effect isn't overdone. Many diffusion filters tend to make everything too soft, resulting in an almost blurry image. Here, however, there's a perfect balance between overall sharpness and diffusion, making everything more pleasing without compromising the technical quality of the shot. The golden hue pairs beautifully with the natural light of the golden hour, amplifying that warm atmosphere without turning into overly artificial or orange tones that are difficult to correct in post-production.
The mounting system is standard with an 82mm thread, so it screws on easily and stays secure. It's not too thick, so you can easily use it in conjunction with other filters, although I personally prefer to use it alone so as not to compromise the final quality too much.
In conclusion, this Gold-Mist has become one of those filters that I always keep in my camera bag because I know that in certain situations it can really make a difference. It is certainly not a filter that you use every day, but when you want to give that extra touch to your photos or create a particular atmosphere in your videos, I know I can count on it. The balance between construction quality, effect obtained, and versatility of use makes it, in my opinion, an excellent tool for those who want to experiment with more creative effects without necessarily having to resort to post-production.

Based on the product pictures I thought this filter will create a very extreme look. The reality is, this filter makes a very subtle golden diffusion in highlights WHICH IS AWESOME! It just turns everything "vintage". I think this will be baked onto my camera for most of my filming and photography, it just adds so much characterto it. Absolutely love it. It looks so cool when up close, it's like glitter trapped inside the glass filter. I attached some test photos taken with leica 12-60mm f2.8 on an olympus camera.

The photo below of Molly the dog shows the very subtle effect the K&F CONCEPT 72mm Gold Diffusion 1/4 Filter creates, with the warm Winter sunlight given a golden boost the filter, adding richer tones to the autumnal colours of both grass and earth around her, having been around cameras since the film only days, it is very reminiscent of the Fuji colour film I preferred. (no, don't ask me the name of it, this was 50 years ago!)

Hopefully the 2 shots of the Mine wheel serves to illustrate just how there is a slight shift toward gold when using the filter - the first is 'normal', 2nd using the filter. Sadly my normal provider of portraiture (grand daughter) is under 18, so I couldn't enlist her as talent for this review...

The K&F CONCEPT 72mm Gold Diffusion 1/4 Filter is spattered, quite evenly, with flecks of gold (I wonder if it is actually gold?), it doesn't noticably affect exposure, so less than 1/3 stop, nor does it add any unexpected colour cast to the image. Yes, the image has a soft & golden glow, that warms up all colours slightly, but not unnaturally.

I've not taken any video footage with it on the camera yet, but hope to add a few single frame grabs a little later.

The K&F CONCEPT 72mm Gold Diffusion 1/4 Filter arrives in a hard plastic case for protection and is provided with a microfiber cleaning cloth. The screw threads are cleanly cut and attached to both my lens and stepping rings smoothly,

Build quality is exactly as expected with a premium priced filter, both in the coatings on the glass and the 'feel' of the metal ring. (premium in relation to K&F CONCEPT's good value ranges)

I really like the 'vintage' film feel the filter creates, so no issue giving the 5 star rating.

The Gold Shimmer Diffusion 1 Filter is a member of K&F Concept’s pro quality Nano-Xcel filter series. The lenses in the series boast a 0.2% ultra-low reflectivity 28 layer nanometer coating and aviation grade aluminum construction. The “1” in the designation means that this particular filter offers the strongest diffusion (i.e. 1/1) relative to other diffusion filters in the same series. Although K&F Concept includes "Shimmer" in the name, there is no shimmer effect; it is just there to aid key word searches.

Diffusion filters come in different strengths. The “1” in the designation means that this particular filter offers the strongest diffusion (i.e. 1/1) as compared to other diffusion filters in the same series.

Diffusion filters are also known as mist filters. They are predominantly used by filmmakers and photographers to achieve a soft, dreamy look. Old school portrait photographers will recall using nylon stockings to reduce contrast and hide skin imperfections. The advantage of using the gold diffusion filter over the nylon stocking trick is that now you are also adding a very subtle golden cast to the scene.

In my tests, the filter worked very well in softening skin texture. I also like the misty glow imparted to night scenes where there are strong specular highlights.

Knowing when and how to use the filter effectively does require experimentation. For example, bloom is not evident in my backlit scene test. Taking the same shot at a different time of day or at a different angle may produce different results.

In summary, I can recommend the K&F Concept’s Shimmer Diffusion 1 Filter as another useful tool for photographers who want to create rather than just take photographs.

I can describe this filter in a single word: quality.

As a professional photographer and filmmaker, I had some concerns the effect might be heavy-handed, but the results from my testing are far more nuanced and subtle, which is exactly what I would expect from a top-tier filter.

This Nano-X Gold Diffusion 1/4 is far more restrained and usable than many diffusion filters at this strength. The key point for me is that blacks are well protected. There’s no milky lift or crushed contrast, which is often the weak point of popular Pro-Mist-style filters on modern digital cameras.

The gold effect is selective rather than global. It becomes noticeable mainly on point light sources and strong highlights, where it adds a subtle, cinematic halation, but it doesn’t impose an overall warm veil across the image. In normal daylight and overcast conditions, the effect remains very natural.

I tested it on:

• skin tones (window light and mixed indoor lighting)
• backlit exteriors
• light-coloured buildings
• metallic subjects
• wide to telephoto focal lengths

In all cases, the diffusion remained controlled, with no unpleasant flare or unpredictable behaviour, even when deliberately shooting without a lens hood into direct sunlight with my 24-105 zoom. The effect is never cheap looking or contrived.

For anyone worried that a 1/4 strength will be too heavy-handed: this one isn’t. It takes the digital edge off without sacrificing important detail or contrast, and feels more cinematic than many stronger diffusion filters I’ve tried. On my Lumix S5IIX it makes the images and footage subtly more film like.

The build quality is also excellent, yet very slim, which helps reduce the risk of vignetting on wide-angle lenses. Despite the slim profile, the knurled edges provide sufficient grip when fitting or removing the filter. The glass has 28-layer multi-coating to deliver sharp image quality without compromising clarity, while offering tough resistance to water, oil, scratches and stains.

Highly recommended if you want diffusion that’s subtle, controlled and usable, with a gentle highlight roll-off and well-preserved shadows, rather than a heavy stylised fog effect. This filter really exceeded my expectations and I plan to use it a lot.
Customer image
Customer image
Customer image
Customer image

This K&F Concept 82mm Gold Diffusion 1/4 filter adds a pleasing cinematic softness while also introducing a gentle warm tone that works well for portraits, video, and atmospheric photography. The filter slightly blooms highlights and softens contrast without destroying detail, which gives images a more organic and film-like character compared to shooting with a perfectly sharp modern lens.

The 1/4 strength is a good middle ground. It’s noticeable enough to smooth skin tones and take the digital edge off harsh lighting, but not so strong that it makes the image look overly hazy. Point light sources like streetlights or reflections get a subtle glow, and bright highlights roll off more gently. The gold tint is very mild and mainly adds warmth rather than shifting colors dramatically, which can be especially flattering for people and sunset scenes.

The build quality is solid. The aluminum filter ring feels sturdy and threads smoothly onto an 82mm lens. Once mounted, it sits securely without binding or feeling overly tight. The glass appears well coated, and I didn’t notice obvious reflections or image degradation beyond the intended diffusion effect.

In practical use for both photo and video, this filter helps create a softer, more cinematic aesthetic straight out of the camera. It’s particularly useful when shooting digital cameras that can sometimes look too clinically sharp. If you already use diffusion filters like Black Mist or Pro-Mist, this gold diffusion version offers a slightly warmer, more stylized alternative while keeping the same soft highlight bloom effect.

Overall, it’s a nice creative filter for filmmakers and photographers who want to add a gentle glow and warmth without heavily compromising image clarity.