Manufactured by a well known brand in the photographic industry, this filter is extremely easy to fit provided you buy the correct size (all lenses require a different size filter). Above all, this special filter variant helps to avoid scratches or annoying little fingers smearing the lens front element. K&F Concept is certainly among the top brands and should definitely be a worthy contender in all the books in my opinion.

Belly

I use this on a set of Meike S35 lenses with a Black Magic Pocket Cinema Camera 6K - very pleased with the ability to change the picture results to be a little softer and dreamier - all while keeping weight down on a gimbal.

A K&F Concept black diffusion 1/4 filter dream cinema effect camera filter is supplied.

The filter has an ultra-slim waterproof and scratch-resistant multi-layer glass. It is suitable for video, vlog and portrait photography. The processing and the quality are excellent. I particularly like the dream cinema effect. The shots with filter are really unique. I can recommend the filter to you. It's easy to attach.

The value for money is reasonable.
Therefore it gets 5 stars from me.

I've been in the film and photo industry for over 10 years now. Such a tool has added great value to my production. All of my clients love the dreamy look it creates that makes you stand out from the crowd. We recommend. I don't usually write reviews, but when something so small can make such a big difference, it's worth every penny!

This endoscope has a very good image quality. The resolution goes up to 1920x1080p.
The 4 LEDs ensure uniform illumination of the hollow body and can be dimmed and switched off. For example, if you want to find cracks and look for outside light.

In industry, it would be required that the device could be operated with clear symbols and with dirty gloves. For this, the labeling would have to be clearer and the keys would have to be made completely differently or a rubberized protection would have to be attached.
Anyone who works in industry is usually surrounded by dust from a wide variety of products, which can even be reactive and stick. If you want to touch the plastic again, it has to be cleanable properly. I don't see that here!
I don't even see the device as suitable for clean laboratories because it is not acid-resistant and cannot be disinfected. There are also too many cracks and openings in which impurities can unintentionally accumulate, which can then contaminate the test arrangement.

So in this presentation it can only be used for home and hobbies.

I am in the automotive industry I used this tool numerous times already. It worked exactly as advertised

One of the best on the market. I use it on a GH five camera with the Sigma lens. It’s a must have.