I've been having this camera on our construction site for a few months now.
Battery - stayed at 100% since then with the help of solar panels.
Nightvision - clear without almost no light in my area. Built-in light can be useful too.
Mic - The 2-way audio works quite loud (much louder than a speakerphone on a mobile).
Data usage: I got a 30GB plan for 90 days. With daily camera viewing several times a day it hasn't used even 1GB yet. I think more power could be used if we use the built-in light and record many videos. For live viewing, data usage is very minimal.

I wouldn't recommend if you want to move this into a WiFi network later, as this works only with a SIM card.

Anyone currently thinking about buying a game camera will be bombarded with a wealth of advertising promises on the Internet. Low light, no light, Bluetooth, WiFi, trigger times of 0.2 seconds - 0.4 seconds, etc. With an app or WiFi or without!? With the abundance of material, it is difficult to choose...! I will simply start with my conclusion after using the 4K game camera from K&F Concept for a little over a week. The images during the day are absolutely top-notch. The night shots look much better from a distance than the previously somewhat "grainy" cameras. A very decent hunting camera for this price range that meets all requirements to full satisfaction. The day shots are of an excellent nature, the night shots at close range up to a maximum of 12 meters are very good and absolutely suitable for showing off. Great camera with excellent recording performance, new housing type and, as I said, very homogeneous control in terms of the app.

The filter is really good, it seems to be a real 10 stop filter (some ND1000 are only 8-9 stops, which makes shutterspeed calculations hard), it is reducing light in both Visible and Infrared light (has been tested on a full spectrum camera used for Infrared Photography), so you will not have a nasty discolouration in the sky as with other ND filters, but you will get a slight blue colour cast, nothing that can not be fixed in post process with the white balance tool, but I highly recommend doing a white balance setting with the filter on to get accurate colours, especially if you are shooting in JPG. I did not see any reduction in detail (see the 100% or 1:1 crop). It easily screwed on my lens and step up rings as well. It has a nice grippy area which I find giving a much better grip than other filters. One thing I'd like to mention is the case it's coming with has a nice locking mechanism and also two carve outs to be able to easily remove the filter from it's case, actually it's one of the best cases I've seen, beating the nice metallic cases from Gobe, which does not close well with larger filters.
If colour cast is a critical issue for you then this filter might disappoint you with it's blue cast, in that case I recommend Haida's NanoPRO ND1000, which I unfortantely lost, but that has virtually no colour cast at all, but nearly triple the price.

The filter quality seems to be perfect. I'm used to that from K&F Concept. And you get a really nice blue streak effect. The problem, however, is that you get that with every single light source in your image, so you don't really have the ability to be selective. You have to compose your recording really carefully. The filter rotates smoothly, allowing you to change the direction of the stripes, but you'll still see them in any light source. I think in the end Photoshop is probably the better option to give you more control over such effects. Still, it's a worthwhile tool to have in your toolbox, especially given the cheap price for an FX filter. It uses the same high quality optical glass as the other newer filters. The precision machining of the filter threads and ring is impressive and gives the feel of a much more expensive filter. So I can't fault any of the properties of the filter. It's just for the way I shoot, it probably won't be as useful as for some other types of photography.

Very good 77mm blue streak filter. The blue steaks can be rotated 360 degrees, which means you can point the light spots in any direction you want to create some very interesting effects. The images I've added are an example and were taken in the same spot I just rotated the filter to show how it works. So far I haven't had any issues with removing the lens filter that you can get with a rotating filter. I'll admit I didn't quite understand how this would work and tried using it during the day on a cloudy day and obviously didn't get anything, but I can confirm that this filter does the pictures I took has not affected, so you can put it on your lens and as long as there are no lights, everything is fine. For this to work you will need a light source, street lights, car headlights, wall lights, etc. BUT note that you cannot choose the light source. So if you have multiple lights you will get the flare effect on all the lights. I tried this on an 85mm lens and with the lens filter on I was still able to attach and detach the lens hood as normal. The filter doesn't have an overhang on the lens, but that probably depends on the lens you're using. Overall I am very happy with the Blue Streak Filter and would recommend it to anyone wanting this effect.

My review refers to the following product, which was made available free of charge as part of a product test:

K&F Concept Mini 3 Pro ND Filter & Polarizing Filter, 3-piece ND8, ND16, CPL Filter Compatible with Mini 3 Pro（Accessories：8*Mini 3 per propeller）

This Filter set consists of the following scope of delivery:

- 3 filter attachments (ND8, ND16 and CPL filter) in a padded transport box
- 2 propeller sets for Mini 3 Pro consisting of a total of 8 propellers
- a small screwdriver for mounting the propeller

Quality and handling of the set:

The Filters are stored in a padded, transparent plastic box and are therefore well protected against damage or dirt during transport.
The filters themselves are very well made and sit perfectly on the Mini 3 Pro gimbal. They are easily assembled. First you carefully turn the original cap of the gimbal anti-clockwise and remove it. Then you can put on the desired filter and lock it in a clockwise direction. The filters are printed on their frames with fine white lettering "Nano-X CPL" "Nano-X ND8" or Nano-X ND16" and are therefore very easy to distinguish.

The glass filters have a metal frame, yet they are extremely light (only 0.7 grams!) so they do not negatively affect the weight of the drone.
They are dustproof and waterproof, so they reliably protect the gimbal camera just like the original cover.

The two neutral density filters (also called gray filters) included in the set reliably reduce the light intensity that hits the sensor chip of the drone camera gimbal. This allows beautiful effects to be achieved when taking photos and videos.

The ND8 filter lets through 1/8 of the incident light, the ND-16 filter only 1/16 of the incident light. Beautiful effects (blurring, etc.) can be achieved with the exposure time.

The polarizing filter from K&F, on the other hand, ensures that reflections are reliably reduced. For example, in buildings with windows or on water surfaces. The polarizing filter also makes the green appear richer. This is particularly noticeable when filming or photographing forests or meadows. Even shots of the sky draw it much better. Since the Mini 3 Pro can pan upwards with the gimbal, great pictures of the sky are possible with the attached K&F polarizing filter. The K&F CPL filter can also be adjusted by adjusting the scale on the filter.

The enclosed 2 sets of propellers should enable a very low-noise flight when used. Since they don't differ much from the original in terms of appearance or construction, I keep them as a replacement.

Conclusion:
All filters in this set from K&F do their job very well depending on the area of ​​application and are easy to install or change. Therefore a clear purchase recommendation.

I rate the product 5 stars overall.

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had fun playing with this Blue Streak filter. It creates blue stripes on your subject or, depending on the setting, light stripes. I enjoy capturing unique shots with the camera and this one is really great. It rotates 360 degrees on your lens, allowing you to rotate the strips in any direction. I have always been satisfied with products from the K&F Concept brand. The filter was clean and ready to use, which is a rare treat. It also comes with a durable carry case and microfiber cloth. Very happy with this filter.

You need some good, sharp highlights, e.g. B. if you point it directly at a bright light to get the most out of it. When you do that the effect is great and it's good at mimicking the blue streaks you get from anamorphic lenses. You can rotate it to any angle, which is handy for switching between portrait and landscape modes, but anything other than horizontal stripes looks odd to me. Probably just because we're used to seeing that in movies. Aside from the blue stripes, it's otherwise very clear and hardly detracts from the rest of the picture, which is great.