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The K&F Concept Nano-B series kaleidoscope prism lens filter in the 72mm version comes with three microfiber cloths in a protective case.
The filter consists of a metal frame, which is also rotatable or adjustable, and a really thick prism glass.
The effect filter also weighs properly due to the glass and looks very high-quality due to the excellent workmanship and weight.
The filter can be easily attached to the lens - even to lenses that do not have 72 mm via a step-up/down adapter.
The photos will be really beautiful and depending on the subject, you can create great photos - here you can really play around creatively, experiment and try out!
In terms of price, the filter is okay and can be recommended!
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Photography is one of my many hobbies and I like to experiment with different techniques. When I found this kaleidoscope filter, I wanted to see what kind of photos it could produce. I’m happy with the results and it adds both texture and depth to your photos in a fun way.

I know there are several apps that perform filtering these days, but I always enjoy native formats and allowing the optics to perform to their abilities without digital noise.

The filter screws on easily and then comes off just as easy with clean quality threads. Mine came in its own protective case along with some cleaning wipes to get started but I also have mine own multi-filter case that holds this addition just fine.

This filter is obviously a specialized filter. I won’t be using it often but it does make some interesting effects. I got the 82mm thread version and it is very heavy (that tells me it’s actual crystal/glass and not just optical plastic). You can even use it with your phone camera if you just hold it up in front of the lens. I’m happy to add this filter to my collection.

The filter is a well-made, geodesic dome that projects outward from the lens. It is a moderately hefty piece of glass – quite a bit heavier than my UV or other filters. The filter has a threaded ring to attach the filter to a lens and a second ring that is used to rotate the filter when it is attached. The filter includes a nice case to securely hold the filter when not in use, and also came with three micro-fiber cleaning cloths.

The effects are cool and fun. I was able to get different kaleidoscope effects by zooming in and out with my lens; by placing the subject off-center in the frame; and by varying the distance between the lens and the subject. Rotating the filter rotates the halo of subjects surrounding the main subject.

The attached guinea pig photos were all taken with the filter attached to an 18-105mm APS-C lens. The distance from the lens to the subsect was about 2-1/2 feet to 3 feet. At this distance, the widest angle provided the least amount of kaleidoscope effect, with the kaleidoscope effect changing as the focal length narrowed. The distance from the lens to the subject can impact the distance between the center subject and the halo of subjects that surround the subject, with the halo of subjects moving further from the center subject as the distance increased.

Pictures taken using the 77mm camera lens filter look stunning having resemblance of a kaleidoscopic effect. It's entirely done optically by transforming the front lens barrel into a multi point capture to get unique perspectives.

Effect can be rotated around using its built in ring. Although one gripe I have is this filter has a rather sim 2.5mm width barrel and can easily get stuck onto lenses if tightened down excessively making it difficult to remove.

On a 77mm filter thread, it has a high precision thread alignment and is easy to screw onto the front of most large DSLR lenses. While the built in 360 rotating front element operates soo smoothly its only slightly heard when capturing video. Photography wise this filter creates an awesome visual look to images making them artistic and colorful.

Filter is also much heavier and bulkier than I initially figured with a rounded fisheye style front although it doesn't alter camera perspective, only creating this creative layer of repetitive pattern known as a kaleidoscope. Aperture was increased by 1/2 to 2 notches to balance out its reduced light that this filter creates from a dense optical refraction but it can vary between DSLRs and mirrorless cameras since its meant to be universally compatible fit.

Images are sharp in the center with noticeable overlapping and blurring towards the edges with limited color fringing or noisy aberrations. Great optical effect that is creative and a lot of fun to play with bringing a unique perspective to digital photography.

Love the way the photos look with this filter. Sizing was perfect for my Canon lens

Love the way the photos look with this filter. Sizing was perfect for my Canon lens

This Kaleidoscope effect filter is heavy and built tough like a fancy tank. I got the filter sized up larger than my lens to help prevent vignetting so it adds a bit more weight than the actual filter size should be. I like the effect that this creates when shooting photos. When shooting video it's hard to dial in the prism for that cool shift and dreamy look but as long as you are stable and locked in on a tripod it looks good. K&F makes some fantastic filters and this one is no different.

Bonjour à tous.

Un filtre caléidoscopique d’excellente qualité, comme tous les produits de cette marque.
Fournie dans une boite robuste avec de bonne protections intérieur pour préserver ce filtre.
Également fournie avec 3 lingettes.
Ce filtre nous offre une multitude de possibilités, il suffit de l’utiliser selon notre imagination.
Il convient à tout type de photos.
On peut également l’utiliser simplement en le positionnant devant n’importe quel type d’appareil, mème un smartphone pour s’amuser.
Mais il est conçu pour les objectifs de 82mm de diamètre.
Un très bon filtre.

Amitié, laurent

Nice clear piece of glass. Allowing user to take some very interesting shot on otherwise normal objects.
Mounts correctly and operates smoothly. At an affordable price as well.
One thing to note, it is a large chunk of glass, so it weighs as such.