I have several brands of trail camera's and this is possibly the best one I have. The night pictures are clear and crisp, the battery life is fantastic.
Customer service is top not, you contact them with a question and they respond fast.
This is my go to Trail Camera

From the golden outer packaging comes a microfiber cloth wrapped in foil and the actual filter box. Inside is a filter that is oversized and heavy for the screw-in size. I have the filter in screw-in size 82mm and am testing it on the Leica Vario-Elmarit-SL 2.8/24-70 with the Leica SL2s.

The mount has a grooved grip ring for screwing in, which protrudes about 1 cm over the filter mount. This makes it easy to grip and screw in or out. There is no fiddling when changing the filter and no dealing with filter clamps when the filter is stuck! The manufacturing quality of the mount is excellent. The entire front frame of the filter has to be twisted to adjust the strength of the polarization. The screw-in knurled ring must be held in place because the rotation of the polarizing filter is difficult. The difficulty is not a design or manufacturing defect, but is for the 2nd function of the Filter is required, namely the darkening from factor 2 to 32, which is adjusted in the front part of the filter holder with 2 relatively large and easy-to-grip levers. If the polarizing filter adjustment were smoother, it would rotate with the ND adjustment.

The overhang of the filter holder makes a larger filter glass possible than with conventional screw-in filters, so that the thick filter does not vignette even at a 24mm focal length. The filter glass is visibly multi-layer coated; a water-repellent nano coating is applied to the front. The original lens cap can be snapped into the filter! All of this gives the impression of a very careful and well-considered design.

Polarizing and ND filters work as usual. There is no particular susceptibility to reflections and stray light. I cannot detect any impairment of the sharpness or an explicit color cast of the lenses. Of course, using the polarizing filter outdoors causes intentional color changes by filtering out the sky reflections, which means that, for example, green plants have a lower blue and a higher yellow component.

One basic problem with using the polarizing filter with mirrorless system cameras remains: except for reflections aimed at at an angle, the strength of the filter effect is practically undetectable on the OLED viewfinders. Landscape photographers who prefer polarizing filters are therefore recommended to use a DSLR with a mirror, in whose natural viewfinder image even small rotations of the polarizing filter are clearly visible. But this is not a fault of this filter, but rather affects polarizing filters in general.

Conclusion: A very carefully and practically constructed double filter at a very attractive price in comparison!

Socket for mounting EF cinema lenses on Fuji x-t3, it does its job. I would have liked there to be a screw mount to support the lens from the back as well. For the main lenses, the adapter plays a bit of play on the Fuji mount. Even if the owner Regilent is mounted on the bars.

Right out of the box I was impressed with this trail camera. This thing has so many functions its crazy. High quality pictures and videos. I have yet to take out hunting, but I can't wait. I took these pictures using 2k resolution, I can't wait to see what 4k looks like.

What's in the Box:
1. Trail Camera
2. Wall mount and screws
3. Tree Strap (Long)
4. 4 batteries (it requires 8 AA)
5. USB cable (long as well)

Okay this thing has so many customizable features it's insane. You can choice what definition to shoot in for photos and videos. You can adjust the shutter speed from 0.1-30 seconds. Adjust the sensitivity, I mean the list goes on with what you can do. It is also wifi and Bluetooth accessible which is great for positioning. Honestly I loved everything about this trail camera, but more so the price.

Overall: I have nothing bad to say about this product. You could buy 2 even 3 of these for the price of 1 name brand trail camera.

[UPDATE]
- K&F Concept contacted me and inform of new changes/upgrades to their trail cam. They also adjusted the selling price to makes this cam more competitive.
- Also this makes me feels more certain about their after-sales customer support, which is a crucial decision when making a purchase. I would rather pay a bit more knowing that the company stand behind their product 100%.
- Add 1Star in overall rating for the after-sale customer service support.
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- I was excited to try out the K & F Concept trail camera to see how it stacked against my 2 other trail cams. I have a few K&F Concept brands for my photography so this is a brand that I knew. Unfortunately, it didn’t fare well against my 2 other trail cams.

- But let’s get to the good point: Video and Photo quality, which is on par to my other trail cams and so no complaint about it. It’s quite good for a trail cam.

- Now the not so good point. The design. The trail cam only uses 4xAA batteries to power the unit. While it’s ok, my other trail cams have an extra slot for another 4xAA batteries for double the working time. Another trail cam I own has an internal battery, solar charging panel and extra slot for 4xAA batteries too. So this trail K&F Trail cam is lacking when compared to my other 2 cams.

- NOTE: There is an option for you to run the trail cam by plugging in. To do that, you’d need a connector with a rounded/barrel plug. It uses 6V 1A to run the cam.

- As for the memory, The package I ordered comes with a 32GB memory card. The type of memory card is an SD type, not micro-sd like my other trail cams. This doesn’t really matter much as both types of memory cards work the same way, the only thing different is the size. That’s all. Not a bad point, but just to point out for those who wonder what type of memory card it uses.

- The Camera comes with a strap for you to strap to structures or tree trunks. I have a slot on the bottom to screw in a mount or tripod mount, but this doesn’t include any mount at all. My other 2 cameras include a mount and so I prefer K&F includes a mount along with the strap. Too bad they didn’t.

- Finally, the price. It’s the most expensive one I own so far. The price of $169 (at the time of review, including all savings) is a big spending for me. The lack of extra ways to power the device and the high price is just a big barrier for me to consider this over my other trail cams. For price comparison, my current trail cams cost 23% and a whopping 40% less than this K&F trail cam. It’s hard for me to justify spending that much.

Suitable for M42 screw on lenses for Pentax DSLR mount.

This is a great hand sized trail camera that you can also mount on a tripod or attach to a stand or tree using the straps included. It's light weight, waterproof, and the camera picks up good quality for night vision. So far we used it around our house and yard but we are going to the trail soon and I'll add even more pictures in the future. Enjoy!

I like that you can control access to the trail camera screen with a password.